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author | Yves Fischer <yvesf-git@xapek.org> | 2011-10-23 21:14:40 +0200 |
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committer | Yves Fischer <yvesf-git@xapek.org> | 2011-10-30 11:33:54 +0100 |
commit | 770ba5201f5c60b2bb36602ff9d359f641e33125 (patch) | |
tree | 2200757f04efbc281c4b3714bfe2e4fe911193b6 /schall/static/RGraph/libraries/RGraph.scatter.js | |
parent | 77f5e686612898974e13f2a5df57c20e4e529363 (diff) | |
download | mini-octopus-770ba5201f5c60b2bb36602ff9d359f641e33125.tar.gz mini-octopus-770ba5201f5c60b2bb36602ff9d359f641e33125.zip |
Charting with flask, rgraph and custom "timeseries database"
Diffstat (limited to 'schall/static/RGraph/libraries/RGraph.scatter.js')
-rw-r--r-- | schall/static/RGraph/libraries/RGraph.scatter.js | 1662 |
1 files changed, 1662 insertions, 0 deletions
diff --git a/schall/static/RGraph/libraries/RGraph.scatter.js b/schall/static/RGraph/libraries/RGraph.scatter.js new file mode 100644 index 0000000..3fde9f3 --- /dev/null +++ b/schall/static/RGraph/libraries/RGraph.scatter.js @@ -0,0 +1,1662 @@ + /** + * o------------------------------------------------------------------------------o + * | This file is part of the RGraph package - you can learn more at: | + * | | + * | http://www.rgraph.net | + * | | + * | This package is licensed under the RGraph license. For all kinds of business | + * | purposes there is a small one-time licensing fee to pay and for non | + * | commercial purposes it is free to use. You can read the full license here: | + * | | + * | http://www.rgraph.net/LICENSE.txt | + * o------------------------------------------------------------------------------o + */ + + if (typeof(RGraph) == 'undefined') RGraph = {}; + + /** + * The scatter graph constructor + * + * @param object canvas The cxanvas object + * @param array data The chart data + */ + RGraph.Scatter = function (id, data) + { + // Get the canvas and context objects + this.id = id; + this.canvas = document.getElementById(id); + this.canvas.__object__ = this; + this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null; + this.max = 0; + this.coords = []; + this.data = []; + this.type = 'scatter'; + this.isRGraph = true; + + + /** + * Compatibility with older browsers + */ + RGraph.OldBrowserCompat(this.context); + + + // Various config properties + this.properties = { + 'chart.background.barcolor1': 'rgba(0,0,0,0)', + 'chart.background.barcolor2': 'rgba(0,0,0,0)', + 'chart.background.grid': true, + 'chart.background.grid.width': 1, + 'chart.background.grid.color': '#ddd', + 'chart.background.grid.hsize': 20, + 'chart.background.grid.vsize': 20, + 'chart.background.hbars': null, + 'chart.background.vbars': null, + 'chart.background.grid.vlines': true, + 'chart.background.grid.hlines': true, + 'chart.background.grid.border': true, + 'chart.background.grid.autofit':true, + 'chart.background.grid.autofit.numhlines': 5, + 'chart.background.grid.autofit.numvlines': 20, + 'chart.text.size': 10, + 'chart.text.angle': 0, + 'chart.text.color': 'black', + 'chart.text.font': 'Verdana', + 'chart.tooltips.effect': 'fade', + 'chart.tooltips.hotspot': 3, + 'chart.tooltips.css.class': 'RGraph_tooltip', + 'chart.tooltips.highlight': true, + 'chart.units.pre': '', + 'chart.units.post': '', + 'chart.numyticks': 10, + 'chart.tickmarks': 'cross', + 'chart.ticksize': 5, + 'chart.xticks': true, + 'chart.xaxis': true, + 'chart.gutter.left': 25, + 'chart.gutter.right': 25, + 'chart.gutter.top': 25, + 'chart.gutter.bottom': 25, + 'chart.xmin': 0, + 'chart.xmax': 0, + 'chart.ymax': null, + 'chart.ymin': null, + 'chart.scale.decimals': null, + 'chart.scale.point': '.', + 'chart.scale.thousand': ',', + 'chart.title': '', + 'chart.title.background': null, + 'chart.title.hpos': null, + 'chart.title.vpos': null, + 'chart.title.bold': true, + 'chart.title.font': null, + 'chart.title.xaxis': '', + 'chart.title.xaxis.bold': true, + 'chart.title.xaxis.size': null, + 'chart.title.xaxis.font': null, + 'chart.title.yaxis': '', + 'chart.title.yaxis.bold': true, + 'chart.title.yaxis.size': null, + 'chart.title.yaxis.font': null, + 'chart.title.xaxis.pos': null, + 'chart.title.yaxis.pos': null, + 'chart.labels': [], + 'chart.labels.ingraph': null, + 'chart.labels.above': false, + 'chart.labels.above.size': 8, + 'chart.labels.above.decimals': 0, + 'chart.ylabels': true, + 'chart.ylabels.count': 5, + 'chart.ylabels.invert': false, + 'chart.ylabels.specific': null, + 'chart.ylabels.inside': false, + 'chart.contextmenu': null, + 'chart.defaultcolor': 'black', + 'chart.xaxispos': 'bottom', + 'chart.yaxispos': 'left', + 'chart.crosshairs': false, + 'chart.crosshairs.color': '#333', + 'chart.crosshairs.linewidth': 1, + 'chart.crosshairs.coords': false, + 'chart.crosshairs.coords.fixed':true, + 'chart.crosshairs.coords.fadeout':false, + 'chart.crosshairs.coords.labels.x': 'X', + 'chart.crosshairs.coords.labels.y': 'Y', + 'chart.crosshairs.hline': true, + 'chart.crosshairs.vline': true, + 'chart.annotatable': false, + 'chart.annotate.color': 'black', + 'chart.line': false, + 'chart.line.linewidth': 1, + 'chart.line.colors': ['green', 'red'], + 'chart.line.shadow.color': 'rgba(0,0,0,0)', + 'chart.line.shadow.blur': 2, + 'chart.line.shadow.offsetx': 3, + 'chart.line.shadow.offsety': 3, + 'chart.line.stepped': false, + 'chart.noaxes': false, + 'chart.key': [], + 'chart.key.background': 'white', + 'chart.key.position': 'graph', + 'chart.key.halign': 'right', + 'chart.key.shadow': false, + 'chart.key.shadow.color': '#666', + 'chart.key.shadow.blur': 3, + 'chart.key.shadow.offsetx': 2, + 'chart.key.shadow.offsety': 2, + 'chart.key.position.gutter.boxed': true, + 'chart.key.position.x': null, + 'chart.key.position.y': null, + 'chart.key.color.shape': 'square', + 'chart.key.rounded': true, + 'chart.key.linewidth': 1, + 'chart.axis.color': 'black', + 'chart.zoom.factor': 1.5, + 'chart.zoom.fade.in': true, + 'chart.zoom.fade.out': true, + 'chart.zoom.hdir': 'right', + 'chart.zoom.vdir': 'down', + 'chart.zoom.frames': 25, + 'chart.zoom.delay': 16.666, + 'chart.zoom.shadow': true, + 'chart.zoom.mode': 'canvas', + 'chart.zoom.thumbnail.width': 75, + 'chart.zoom.thumbnail.height': 75, + 'chart.zoom.background': true, + 'chart.zoom.action': 'zoom', + 'chart.boxplot.width': 8, + 'chart.boxplot.capped': true, + 'chart.resizable': false, + 'chart.resize.handle.background': null, + 'chart.xmin': 0, + 'chart.labels.specific.align': 'left', + 'chart.xscale': false, + 'chart.xscale.units.pre': '', + 'chart.xscale.units.post': '', + 'chart.xscale.numlabels': 10, + 'chart.xscale.formatter': null, + 'chart.noendxtick': false, + 'chart.noendytick': true + } + + // Handle multiple datasets being given as one argument + if (arguments[1][0] && arguments[1][0][0] && typeof(arguments[1][0][0][0]) == 'number') { + // Store the data set(s) + for (var i=0; i<arguments[1].length; ++i) { + this.data[i] = arguments[1][i]; + } + + // Handle multiple data sets being supplied as seperate arguments + } else { + // Store the data set(s) + for (var i=1; i<arguments.length; ++i) { + this.data[i - 1] = arguments[i]; + } + } + + // Check for support + if (!this.canvas) { + alert('[SCATTER] No canvas support'); + return; + } + + + /** + * Set the .getShape commonly named method + */ + this.getShape = this.getPoint; + } + + + /** + * A simple setter + * + * @param string name The name of the property to set + * @param string value The value of the property + */ + RGraph.Scatter.prototype.Set = function (name, value) + { + /** + * This is here because the key expects a name of "chart.colors" + */ + if (name == 'chart.line.colors') { + this.properties['chart.colors'] = value; + } + + /** + * Allow compatibility with older property names + */ + if (name == 'chart.tooltip.hotspot') { + name = 'chart.tooltips.hotspot'; + } + + /** + * chart.yaxispos should be left or right + */ + if (name == 'chart.yaxispos' && value != 'left' && value != 'right') { + alert("[SCATTER] chart.yaxispos should be left or right. You've set it to: '" + value + "' Changing it to left"); + value = 'left'; + } + + /** + * Check for xaxispos + */ + if (name == 'chart.xaxispos' ) { + if (value != 'bottom' && value != 'center') { + alert('[SCATTER] (' + this.id + ') chart.xaxispos should be center or bottom. Tried to set it to: ' + value + ' Changing it to center'); + value = 'center'; + } + } + + this.properties[name.toLowerCase()] = value; + } + + + /** + * A simple getter + * + * @param string name The name of the property to set + */ + RGraph.Scatter.prototype.Get = function (name) + { + return this.properties[name]; + } + + + /** + * The function you call to draw the line chart + */ + RGraph.Scatter.prototype.Draw = function () + { + // MUST be the first thing done! + if (typeof(this.Get('chart.background.image')) == 'string' && !this.__background_image__) { + RGraph.DrawBackgroundImage(this); + return; + } + + /** + * Fire the onbeforedraw event + */ + RGraph.FireCustomEvent(this, 'onbeforedraw'); + + /** + * Clear all of this canvases event handlers (the ones installed by RGraph) + */ + RGraph.ClearEventListeners(this.id); + + /** + * This is new in May 2011 and facilitates indiviual gutter settings, + * eg chart.gutter.left + */ + this.gutterLeft = this.Get('chart.gutter.left'); + this.gutterRight = this.Get('chart.gutter.right'); + this.gutterTop = this.Get('chart.gutter.top'); + this.gutterBottom = this.Get('chart.gutter.bottom'); + + // Go through all the data points and see if a tooltip has been given + this.Set('chart.tooltips', false); + this.hasTooltips = false; + var overHotspot = false; + + // Reset the coords array + this.coords = []; + + if (!RGraph.isIE8()) { + for (var i=0; i<this.data.length; ++i) { + for (var j =0;j<this.data[i].length; ++j) { + if (this.data[i][j] && this.data[i][j][3] && typeof(this.data[i][j][3]) == 'string' && this.data[i][j][3].length) { + this.Set('chart.tooltips', [1]); // An array + this.hasTooltips = true; + } + } + } + } + + // Reset the maximum value + this.max = 0; + + // Work out the maximum Y value + if (this.Get('chart.ymax') && this.Get('chart.ymax') > 0) { + + this.scale = []; + this.max = this.Get('chart.ymax'); + this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0; + + this.scale[0] = ((this.max - this.min) * (1/5)) + this.min; + this.scale[1] = ((this.max - this.min) * (2/5)) + this.min; + this.scale[2] = ((this.max - this.min) * (3/5)) + this.min; + this.scale[3] = ((this.max - this.min) * (4/5)) + this.min; + this.scale[4] = ((this.max - this.min) * (5/5)) + this.min; + + var decimals = this.Get('chart.scale.decimals'); + + this.scale = [ + Number(this.scale[0]).toFixed(decimals), + Number(this.scale[1]).toFixed(decimals), + Number(this.scale[2]).toFixed(decimals), + Number(this.scale[3]).toFixed(decimals), + Number(this.scale[4]).toFixed(decimals) + ]; + + } else { + + var i = 0; + var j = 0; + + for (i=0; i<this.data.length; ++i) { + for (j=0; j<this.data[i].length; ++j) { + this.max = Math.max(this.max, typeof(this.data[i][j][1]) == 'object' ? RGraph.array_max(this.data[i][j][1]) : Math.abs(this.data[i][j][1])); + } + } + + this.scale = RGraph.getScale(this.max, this); + + this.max = this.scale[4]; + this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0; + + if (this.min) { + this.scale[0] = ((this.max - this.min) * (1/5)) + this.min; + this.scale[1] = ((this.max - this.min) * (2/5)) + this.min; + this.scale[2] = ((this.max - this.min) * (3/5)) + this.min; + this.scale[3] = ((this.max - this.min) * (4/5)) + this.min; + this.scale[4] = ((this.max - this.min) * (5/5)) + this.min; + } + + + if (typeof(this.Get('chart.scale.decimals')) == 'number') { + var decimals = this.Get('chart.scale.decimals'); + + this.scale = [ + Number(this.scale[0]).toFixed(decimals), + Number(this.scale[1]).toFixed(decimals), + Number(this.scale[2]).toFixed(decimals), + Number(this.scale[3]).toFixed(decimals), + Number(this.scale[4]).toFixed(decimals) + ]; + } + } + + this.grapharea = this.canvas.height - this.gutterTop - this.gutterBottom; + + // Progressively Draw the chart + RGraph.background.Draw(this); + + /** + * Draw any horizontal bars that have been specified + */ + if (this.Get('chart.background.hbars') && this.Get('chart.background.hbars').length) { + RGraph.DrawBars(this); + } + + /** + * Draw any vertical bars that have been specified + */ + if (this.Get('chart.background.vbars') && this.Get('chart.background.vbars').length) { + this.DrawVBars(); + } + + if (!this.Get('chart.noaxes')) { + this.DrawAxes(); + } + + this.DrawLabels(); + + i = 0; + for(i=0; i<this.data.length; ++i) { + this.DrawMarks(i); + + // Set the shadow + this.context.shadowColor = this.Get('chart.line.shadow.color'); + this.context.shadowOffsetX = this.Get('chart.line.shadow.offsetx'); + this.context.shadowOffsetY = this.Get('chart.line.shadow.offsety'); + this.context.shadowBlur = this.Get('chart.line.shadow.blur'); + + this.DrawLine(i); + + // Turn the shadow off + RGraph.NoShadow(this); + } + + + if (this.Get('chart.line')) { + for (var i=0;i<this.data.length; ++i) { + this.DrawMarks(i); // Call this again so the tickmarks appear over the line + } + } + + + + /** + * Setup the context menu if required + */ + if (this.Get('chart.contextmenu')) { + RGraph.ShowContext(this); + } + + /** + * Install the event handler for tooltips + */ + if (this.hasTooltips) { + + /** + * Register all charts + */ + RGraph.Register(this); + + var overHotspot = false; + + var canvas_onmousemove_func = function (e) + { + e = RGraph.FixEventObject(e); + + var canvas = e.target; + var obj = canvas.__object__; + var context = obj.context; + var mouseCoords = RGraph.getMouseXY(e); + var point = obj.getPoint(e); + var overHotspot = false; + + if (point) { + + var __dataset__ = point[2]; + var __index__ = point[3]; + var __text__ = point[4]; + var overHotspot = true; + + + + if (point[4]) { + canvas.style.cursor = 'pointer'; + + if ( + !RGraph.Registry.Get('chart.tooltip') || + RGraph.Registry.Get('chart.tooltip').__text__ != __text__ || + RGraph.Registry.Get('chart.tooltip').__index__ != __index__ || + RGraph.Registry.Get('chart.tooltip').__dataset__ != __dataset__ + ) { + + if (obj.Get('chart.tooltips.highlight')) { + RGraph.Redraw(); + } + + /** + * Get the tooltip text + */ + if (typeof(__text__) == 'function') { + var text = String(__text__(i)); + + } else { + var text = String(__text__); + } + + RGraph.Tooltip(canvas, text, e.pageX, e.pageY, __index__); + + RGraph.Registry.Get('chart.tooltip').__index__ = __index__; + + if (RGraph.Registry.Get('chart.tooltip')) { + RGraph.Registry.Get('chart.tooltip').__dataset__ = __dataset__; + } + + + + /** + * Draw a circle around the mark. Also highlight the boxplot if necessary + */ + if (obj.Get('chart.tooltips.highlight') && typeof(point[0]) == 'object') { + context.beginPath(); + context.strokeStyle = 'black'; + context.fillStyle = 'rgba(255,255,255,0.5)'; + context.strokeRect(point[0][0], point[1][0], point[0][1], point[1][1]); + context.fillRect(point[0][0], point[1][0], point[0][1], point[1][1]); + context.stroke(); + context.fill(); + + } else if (obj.Get('chart.tooltips.highlight') && typeof(point[0]) == 'number') { + context.beginPath(); + context.fillStyle = 'rgba(255,255,255,0.5)'; + context.arc(point[0], point[1], 3, 0, 6.28, 0); + context.fill(); + } + } + } + } + + /** + * Reset the pointer + */ + if (!overHotspot || !point[4]) { + canvas.style.cursor = 'default'; + } + } + this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); + RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); + } + + + /** + * Draw the key if necessary + */ + if (this.Get('chart.key') && this.Get('chart.key').length) { + RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.line.colors')); + } + + + /** + * Draw " above" labels if enabled + */ + if (this.Get('chart.labels.above')) { + this.DrawAboveLabels(); + } + + /** + * Draw the "in graph" labels, using the member function, NOT the shared function in RGraph.common.core.js + */ + this.DrawInGraphLabels(this); + + + /** + * Draw crosschairs + */ + RGraph.DrawCrosshairs(this); + + + /** + * If the canvas is annotatable, do install the event handlers + */ + if (this.Get('chart.annotatable')) { + RGraph.Annotate(this); + } + + /** + * This bit shows the mini zoom window if requested + */ + if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { + RGraph.ShowZoomWindow(this); + } + + + /** + * This function enables resizing + */ + if (this.Get('chart.resizable')) { + RGraph.AllowResizing(this); + } + + /** + * Fire the RGraph ondraw event + */ + RGraph.FireCustomEvent(this, 'ondraw'); + } + + + /** + * Draws the axes of the scatter graph + */ + RGraph.Scatter.prototype.DrawAxes = function () + { + var canvas = this.canvas; + var context = this.context; + var graphHeight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom; + + context.beginPath(); + context.strokeStyle = this.Get('chart.axis.color'); + context.lineWidth = 1; + + // Draw the Y axis + if (this.Get('chart.yaxispos') == 'left') { + context.moveTo(this.gutterLeft, this.gutterTop); + context.lineTo(this.gutterLeft, RGraph.GetHeight(this) - this.gutterBottom); + } else { + context.moveTo(RGraph.GetWidth(this) - this.gutterRight, this.gutterTop); + context.lineTo(RGraph.GetWidth(this) - this.gutterRight, RGraph.GetHeight(this) - this.gutterBottom); + } + + + // Draw the X axis + if (this.Get('chart.xaxis')) { + if (this.Get('chart.xaxispos') == 'center') { + context.moveTo(this.gutterLeft, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2)); + context.lineTo(this.canvas.width - this.gutterRight, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2)); + } else { + context.moveTo(this.gutterLeft, this.canvas.height - this.gutterBottom); + context.lineTo(this.canvas.width - this.gutterRight, this.canvas.height - this.gutterBottom); + } + } + + /** + * Draw the Y tickmarks + */ + var numyticks = this.Get('chart.numyticks'); + + for (y=this.gutterTop; y < this.canvas.height - this.gutterBottom + (this.Get('chart.xaxispos') == 'center' ? 1 : 0) ; y+=(graphHeight / numyticks)) { + + // This is here to accomodate the X axis being at the center + if (y == (this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2)) ) continue; + + if (this.Get('chart.yaxispos') == 'left') { + context.moveTo(this.gutterLeft, y); + context.lineTo(this.gutterLeft - 3, y); + } else { + context.moveTo(this.canvas.width - this.gutterRight +3, y); + context.lineTo(this.canvas.width - this.gutterRight, y); + } + + /** + * Draw an extra tick if the X axis isn't being shown + */ + if (this.Get('chart.xaxis') == false && this.Get('chart.noendytick') == false) { + this.context.moveTo(this.gutterLeft, this.canvas.height - this.gutterBottom); + this.context.lineTo(this.gutterLeft - 3, this.canvas.height - this.gutterBottom); + } + } + + + /** + * Draw the X tickmarks + */ + if (this.Get('chart.xticks') && this.Get('chart.xaxis')) { + var x = 0; + var y = (this.Get('chart.xaxispos') == 'center') ? this.gutterTop + (this.grapharea / 2): (this.canvas.height - this.gutterBottom); + this.xTickGap = (this.Get('chart.labels') && this.Get('chart.labels').length) ? ((this.canvas.width - this.gutterLeft - this.gutterRight ) / this.Get('chart.labels').length) : (this.canvas.width - this.gutterLeft - this.gutterRight) / 10; + + for (x = (this.gutterLeft + (this.Get('chart.yaxispos') == 'left' ? this.xTickGap : 0) ); + x <= (this.canvas.width - this.gutterRight - (this.Get('chart.yaxispos') == 'left' ? 0 : 1)); + x += this.xTickGap) { + + if (this.Get('chart.yaxispos') == 'left' && this.Get('chart.noendxtick') == true && x == (this.canvas.width - this.gutterRight) ) { + continue; + } else if (this.Get('chart.yaxispos') == 'right' && this.Get('chart.noendxtick') == true && x == this.gutterLeft) { + continue; + } + + context.moveTo(x, y - (this.Get('chart.xaxispos') == 'center' ? 3 : 0)); + context.lineTo(x, y + 3); + } + } + + context.stroke(); + } + + + + + + + + + + + + /** + * Draws the labels on the scatter graph + */ + RGraph.Scatter.prototype.DrawLabels = function () + { + this.context.fillStyle = this.Get('chart.text.color'); + var font = this.Get('chart.text.font'); + var xMin = this.Get('chart.xmin'); + var xMax = this.Get('chart.xmax'); + var yMax = this.scale[4]; + var yMin = this.Get('chart.ymin'); + var text_size = this.Get('chart.text.size'); + var units_pre = this.Get('chart.units.pre'); + var units_post = this.Get('chart.units.post'); + var numYLabels = this.Get('chart.ylabels.count'); + var invert = this.Get('chart.ylabels.invert'); + var inside = this.Get('chart.ylabels.inside'); + var context = this.context; + var canvas = this.canvas; + var boxed = false; + + this.halfTextHeight = text_size / 2; + + + this.halfGraphHeight = (this.canvas.height - this.gutterTop - this.gutterBottom) / 2; + + /** + * Draw the Y yaxis labels, be it at the top or center + */ + if (this.Get('chart.ylabels')) { + + var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : RGraph.GetWidth(this) - this.gutterRight + 5; + var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right'; + + /** + * Now change the two things above if chart.ylabels.inside is specified + */ + if (inside) { + if (this.Get('chart.yaxispos') == 'left') { + xPos = this.Get('chart.gutter.left') + 5; + align = 'left'; + boxed = true; + } else { + xPos = this.canvas.width - this.Get('chart.gutter.right') - 5; + align = 'right'; + boxed = true; + } + } + + if (this.Get('chart.xaxispos') == 'center') { + + + /** + * Specific Y labels + */ + if (typeof(this.Get('chart.ylabels.specific')) == 'object' && this.Get('chart.ylabels.specific') != null && this.Get('chart.ylabels.specific').length) { + + var labels = this.Get('chart.ylabels.specific'); + + if (this.Get('chart.ymin') > 0) { + labels = []; + for (var i=0; i<(this.Get('chart.ylabels.specific').length - 1); ++i) { + labels.push(this.Get('chart.ylabels.specific')[i]); + } + } + + for (var i=0; i<labels.length; ++i) { + var y = this.gutterTop + (i * (this.grapharea / (labels.length * 2) ) ); + RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align, boxed); + } + + var reversed_labels = RGraph.array_reverse(labels); + + for (var i=0; i<reversed_labels.length; ++i) { + var y = this.gutterTop + (this.grapharea / 2) + ((i+1) * (this.grapharea / (labels.length * 2) ) ); + RGraph.Text(context,font, text_size, xPos, y, reversed_labels[i], 'center', align, boxed); + } + + /** + * Draw the center label if chart.ymin is specified + */ + if (this.Get('chart.ymin') > 0) { + RGraph.Text(context, font, text_size, xPos, (this.grapharea / 2) + this.Get('chart.gutter.top'), this.Get('chart.ylabels.specific')[this.Get('chart.ylabels.specific').length - 1], 'center', align, boxed); + } + + return; + } + + + if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) { + // Draw the top halves labels + RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed); + + + if (numYLabels >= 5) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed); + } + + if (numYLabels >= 3) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed); + } + + // Draw the bottom halves labels + if (numYLabels >= 3) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed); + } + + if (numYLabels == 5) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed); + } + + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (5/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed); + + } else if (numYLabels == 10) { + // 10 Y labels + var interval = (this.grapharea / numYLabels) / 2; + + for (var i=0; i<numYLabels; ++i) { + RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/20) ),RGraph.number_format(this,(this.max - (this.max * (i/10))).toFixed(this.Get('chart.scale.decimals')),units_pre, units_post),'center', align, boxed); + RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/20) ) + (this.grapharea / 2) + (this.grapharea / 20),'-' + RGraph.number_format(this, ((this.max * (i/10)) + (this.max * (1/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post), 'center', align, boxed); + } + + } else { + alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only'); + } + + } else { + + var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : this.canvas.width - this.gutterRight + 5; + var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right'; + + if (inside) { + if (this.Get('chart.yaxispos') == 'left') { + xPos = this.Get('chart.gutter.left') + 5; + align = 'left'; + boxed = true; + } else { + xPos = this.canvas.width - this.Get('chart.gutter.right') - 5; + align = 'right'; + boxed = true; + } + } + /** + * Specific Y labels + */ + if (typeof(this.Get('chart.ylabels.specific')) == 'object' && this.Get('chart.ylabels.specific')) { + + var labels = this.Get('chart.ylabels.specific'); + + // Lose the last label + if (this.Get('chart.ymin') > 0) { + labels = []; + for (var i=0; i<(this.Get('chart.ylabels.specific').length - 1); ++i) { + labels.push(this.Get('chart.ylabels.specific')[i]); + } + } + + for (var i=0; i<labels.length; ++i) { + var y = this.gutterTop + (i * (this.grapharea / labels.length) ); + + RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align, boxed); + } + + /** + * Draw the center label if chart.ymin is specified + */ + if (this.Get('chart.ymin') > 0) { + RGraph.Text(context, font, text_size, xPos, this.canvas.height - this.Get('chart.gutter.bottom'), this.Get('chart.ylabels.specific')[this.Get('chart.ylabels.specific').length - 1], 'center', align, boxed); + } + + return; + } + + if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) { + if (invert) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, 0, units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (5/5) ), RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed); + + if (numYLabels >= 5) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed); + } + + if (numYLabels >= 3) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed); + } + } else { + RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align, boxed); + + if (numYLabels >= 5) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align, boxed); + } + + if (numYLabels >= 3) { + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align, boxed); + RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align, boxed); + } + } + } else if (numYLabels == 10) { + var interval = (this.grapharea / numYLabels) / 2; + if (invert) { + for (var i=numYLabels; i>=0; --i) { + RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * ((10-i)/10) ),RGraph.number_format(this,(this.max - (this.max * (i/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post),'center', align, boxed); + } + } else { + // 10 Y labels + for (var i=0; i<numYLabels; ++i) { + + RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/10) ),RGraph.number_format(this, (this.max - ((this.max - this.min) * (i/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post),'center', align, boxed); + } + } + } else { + alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only'); + } + + if (this.Get('chart.ymin')) { + RGraph.Text(context, font, text_size, xPos, this.canvas.height - this.gutterBottom,RGraph.number_format(this, this.Get('chart.ymin').toFixed(this.Get('chart.scale.decimals')), units_pre, units_post),'center', align, boxed); + } + } + } + + + + + /** + * Draw an X scale + */ + if (this.Get('chart.xscale')) { + + var numXLabels = this.Get('chart.xscale.numlabels'); + var interval = (this.canvas.width - this.gutterLeft - this.gutterRight) / numXLabels; + var y = this.canvas.height - this.gutterBottom + 5 + (text_size / 2); + var units_pre_x = this.Get('chart.xscale.units.pre'); + var units_post_x = this.Get('chart.xscale.units.post'); + + + if (!this.Get('chart.xmax')) { + var xmax = 0; + + for (var ds=0; ds<this.data.length; ++ds) { + for (var point=0; point<this.data[ds].length; ++point) { + xmax = Math.max(xmax, this.data[ds][point][0]); + } + } + + this.Set('chart.xmax', RGraph.getScale(xmax)[4]); + } + + + for (var i=0; i<numXLabels; ++i) { + + var num = ( (this.Get('chart.xmax') - this.Get('chart.xmin')) * ((i+1) / numXLabels)) + this.Get('chart.xmin'); + var x = this.gutterLeft + ((i+1) * interval); + + if (typeof(this.Get('chart.xscale.formatter')) == 'function') { + var text = this.Get('chart.xscale.formatter')(this, num); + } else { + var text = RGraph.number_format(this, + num.toFixed(this.Get('chart.scale.decimals')), + units_pre_x, + units_post_x); + } + + RGraph.Text(context, font, text_size, x, y, text, 'center', 'center'); + } + + /** + * Draw X labels + */ + } else { + // Put the text on the X axis + var graphArea = this.canvas.width - this.gutterLeft - this.gutterRight; + var xInterval = graphArea / this.Get('chart.labels').length; + var xPos = this.gutterLeft; + var yPos = (this.canvas.height - this.gutterBottom) + 15; + var labels = this.Get('chart.labels'); + + /** + * Text angle + */ + var angle = 0; + var valign = null; + var halign = 'center'; + + if (this.Get('chart.text.angle') > 0) { + angle = -1 * this.Get('chart.text.angle'); + valign = 'center'; + halign = 'right'; + yPos -= 10; + } + + for (i=0; i<labels.length; ++i) { + + if (typeof(labels[i]) == 'object') { + + if (this.Get('chart.labels.specific.align') == 'center') { + var rightEdge = 0; + + if (labels[i+1] && labels[i+1][1]) { + rightEdge = labels[i+1][1]; + } else { + rightEdge = this.Get('chart.xmax'); + } + + var offset = (rightEdge - labels[i][1]) / 2; + + } else { + var offset = 0; + } + + + RGraph.Text(context, + font, + this.Get('chart.text.size'), + this.gutterLeft + (graphArea * ((labels[i][1] - xMin + offset) / (this.Get('chart.xmax') - xMin))) + 5, + yPos, + String(labels[i][0]), + valign, + angle != 0 ? 'right' : (this.Get('chart.labels.specific.align') == 'center' ? 'center' : 'left'), + null, + angle + ); + + /** + * Draw the gray indicator line + */ + this.context.beginPath(); + this.context.strokeStyle = '#bbb'; + this.context.moveTo(this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin))), RGraph.GetHeight(this) - this.gutterBottom); + this.context.lineTo(this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin))), RGraph.GetHeight(this) - this.gutterBottom + 20); + this.context.stroke(); + + } else { + RGraph.Text(context, font, this.Get('chart.text.size'), xPos + (this.xTickGap / 2), yPos, String(labels[i]), valign, halign, null, angle); + } + + // Do this for the next time around + xPos += xInterval; + } + + /** + * Draw the final indicator line + */ + if (typeof(labels[0]) == 'object') { + this.context.beginPath(); + this.context.strokeStyle = '#bbb'; + this.context.moveTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom); + this.context.lineTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom + 20); + this.context.stroke(); + } + } + } + + + + + + + + + + + + + + + /** + * Draws the actual scatter graph marks + * + * @param i integer The dataset index + */ + RGraph.Scatter.prototype.DrawMarks = function (i) + { + /** + * Reset the coords array + */ + this.coords[i] = []; + + /** + * Plot the values + */ + var xmax = this.Get('chart.xmax'); + var default_color = this.Get('chart.defaultcolor'); + + for (var j=0; j<this.data[i].length; ++j) { + /** + * This is here because tooltips are optional + */ + var data_point = this.data[i]; + + var xCoord = data_point[j][0]; + var yCoord = data_point[j][1]; + var color = data_point[j][2] ? data_point[j][2] : default_color; + var tooltip = (data_point[j] && data_point[j][3]) ? data_point[j][3] : null; + + + this.DrawMark( + i, + xCoord, + yCoord, + xmax, + this.scale[4], + color, + tooltip, + this.coords[i], + data_point + ); + } + } + + + /** + * Draws a single scatter mark + */ + RGraph.Scatter.prototype.DrawMark = function (index, x, y, xMax, yMax, color, tooltip, coords, data) + { + /** + * Inverted Y scale handling + */ + if (this.Get('chart.ylabels.invert')) { + if (typeof(y) == 'number') { + y = yMax - y; + } + } + + var tickmarks = this.Get('chart.tickmarks'); + var tickSize = this.Get('chart.ticksize'); + var xMin = this.Get('chart.xmin'); + var x = ((x - xMin) / (xMax - xMin)) * (this.canvas.width - this.gutterLeft - this.gutterRight); + var originalX = x; + var originalY = y; + + + /** + * This allows chart.tickmarks to be an array + */ + + if (tickmarks && typeof(tickmarks) == 'object') { + tickmarks = tickmarks[index]; + } + + + /** + * This allows chart.ticksize to be an array + */ + if (typeof(tickSize) == 'object') { + var tickSize = tickSize[index]; + var halfTickSize = tickSize / 2; + } else { + var halfTickSize = tickSize / 2; + } + + + /** + * This bit is for boxplots only + */ + if ( typeof(y) == 'object' + && typeof(y[0]) == 'number' + && typeof(y[1]) == 'number' + && typeof(y[2]) == 'number' + && typeof(y[3]) == 'number' + && typeof(y[4]) == 'number' + ) { + + var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0; + this.Set('chart.boxplot', true); + this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom; + + if (this.Get('chart.xaxispos') == 'center') { + this.graphheight /= 2; + } + + var y0 = (this.graphheight) - ((y[4] - yMin) / (yMax - yMin)) * (this.graphheight); + var y1 = (this.graphheight) - ((y[3] - yMin) / (yMax - yMin)) * (this.graphheight); + var y2 = (this.graphheight) - ((y[2] - yMin) / (yMax - yMin)) * (this.graphheight); + var y3 = (this.graphheight) - ((y[1] - yMin) / (yMax - yMin)) * (this.graphheight); + var y4 = (this.graphheight) - ((y[0] - yMin) / (yMax - yMin)) * (this.graphheight); + + /** + * Inverted labels + */ + if (this.Get('chart.ylabels.invert')) { + y0 = this.graphheight - y0; + y1 = this.graphheight - y1; + y2 = this.graphheight - y2; + y3 = this.graphheight - y3; + y4 = this.graphheight - y4; + } + + var col1 = y[5]; + var col2 = y[6]; + + // Override the boxWidth + if (typeof(y[7]) == 'number') { + var boxWidth = y[7]; + } + + var y = this.graphheight - y2; + + } else { + var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0; + var y = (( (y - yMin) / (yMax - yMin)) * (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom)); + } + + /** + * Account for the X axis being at the centre + */ + if (this.Get('chart.xaxispos') == 'center') { + y /= 2; + y += this.halfGraphHeight; + } + + // This is so that points are on the graph, and not the gutter + x += this.gutterLeft; + y = this.canvas.height - this.gutterBottom - y; + + this.context.beginPath(); + + // Color + this.context.strokeStyle = color; + + /** + * Boxplots + */ + if ( this.Get('chart.boxplot') + && typeof(y0) == 'number' + && typeof(y1) == 'number' + && typeof(y2) == 'number' + && typeof(y3) == 'number' + && typeof(y4) == 'number' + ) { + + var boxWidth = boxWidth ? boxWidth : this.Get('chart.boxplot.width'); + var halfBoxWidth = boxWidth / 2; + + this.context.beginPath(); + + // Draw the upper coloured box if a value is specified + if (col1) { + this.context.fillStyle = col1; + this.context.fillRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y2 - y1); + } + + // Draw the lower coloured box if a value is specified + if (col2) { + this.context.fillStyle = col2; + this.context.fillRect(x - halfBoxWidth, y2 + this.gutterTop, boxWidth, y3 - y2); + } + + this.context.strokeRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y3 - y1); + this.context.stroke(); + + // Now draw the whiskers + this.context.beginPath(); + if (this.Get('chart.boxplot.capped')) { + this.context.moveTo(x - halfBoxWidth, y0 + this.gutterTop); + this.context.lineTo(x + halfBoxWidth, y0 + this.gutterTop); + } + + this.context.moveTo(x, y0 + this.gutterTop); + this.context.lineTo(x, y1 + this.gutterTop); + + if (this.Get('chart.boxplot.capped')) { + this.context.moveTo(x - halfBoxWidth, y4 + this.gutterTop); + this.context.lineTo(x + halfBoxWidth, y4 + this.gutterTop); + } + + this.context.moveTo(x, y4 + this.gutterTop); + this.context.lineTo(x, y3 + this.gutterTop); + + this.context.stroke(); + } + + + /** + * Draw the tickmark, but not for boxplots + */ + if (!y0 && !y1 && !y2 && !y3 && !y4) { + + this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom; + + + + if (tickmarks == 'circle') { + this.context.arc(x, y, halfTickSize, 0, 6.28, 0); + this.context.fillStyle = color; + this.context.fill(); + + } else if (tickmarks == 'plus') { + + this.context.moveTo(x, y - halfTickSize); + this.context.lineTo(x, y + halfTickSize); + this.context.moveTo(x - halfTickSize, y); + this.context.lineTo(x + halfTickSize, y); + this.context.stroke(); + + } else if (tickmarks == 'square') { + this.context.strokeStyle = color; + this.context.fillStyle = color; + this.context.fillRect( + x - halfTickSize, + y - halfTickSize, + tickSize, + tickSize + ); + //this.context.fill(); + + } else if (tickmarks == 'cross') { + + this.context.moveTo(x - halfTickSize, y - halfTickSize); + this.context.lineTo(x + halfTickSize, y + halfTickSize); + this.context.moveTo(x + halfTickSize, y - halfTickSize); + this.context.lineTo(x - halfTickSize, y + halfTickSize); + + this.context.stroke(); + + /** + * Diamond shape tickmarks + */ + } else if (tickmarks == 'diamond') { + this.context.fillStyle = this.context.strokeStyle; + + this.context.moveTo(x, y - halfTickSize); + this.context.lineTo(x + halfTickSize, y); + this.context.lineTo(x, y + halfTickSize); + this.context.lineTo(x - halfTickSize, y); + this.context.lineTo(x, y - halfTickSize); + + this.context.fill(); + this.context.stroke(); + + /** + * Custom tickmark style + */ + } else if (typeof(tickmarks) == 'function') { + + var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight + var xVal = ((x - this.gutterLeft) / graphWidth) * xMax; + var yVal = ((this.graphheight - (y - this.gutterTop)) / this.graphheight) * yMax; + + tickmarks(this, data, x, y, xVal, yVal, xMax, yMax, color) + + /** + * No tickmarks + */ + } else if (tickmarks == null) { + + /** + * Unknown tickmark type + */ + } else { + alert('[SCATTER] (' + this.id + ') Unknown tickmark style: ' + tickmarks ); + } + } + + /** + * Add the tickmark to the coords array + */ + if ( this.Get('chart.boxplot') + && typeof(y0) == 'number' + && typeof(y1) == 'number' + && typeof(y2) == 'number' + && typeof(y3) == 'number' + && typeof(y4) == 'number') { + + x = [x - halfBoxWidth, x + halfBoxWidth]; + y = [y0 + this.gutterTop, y1 + this.gutterTop, y2 + this.gutterTop, y3 + this.gutterTop, y4 + this.gutterTop]; + + } + + coords.push([x, y, tooltip]); + } + + + /** + * Draws an optional line connecting the tick marks. + * + * @param i The index of the dataset to use + */ + RGraph.Scatter.prototype.DrawLine = function (i) + { + if (this.Get('chart.line') && this.coords[i].length >= 2) { + + this.context.lineCap = 'round'; + this.context.lineJoin = 'round'; + this.context.lineWidth = this.GetLineWidth(i);// i is the index of the set of coordinates + this.context.strokeStyle = this.Get('chart.line.colors')[i]; + this.context.beginPath(); + + var len = this.coords[i].length; + + for (var j=0; j<this.coords[i].length; ++j) { + + var xPos = this.coords[i][j][0]; + var yPos = this.coords[i][j][1]; + + if (j == 0) { + this.context.moveTo(xPos, yPos); + } else { + + // Stepped? + var stepped = this.Get('chart.line.stepped'); + + if ( (typeof(stepped) == 'boolean' && stepped) + || (typeof(stepped) == 'object' && stepped[i]) + ) { + this.context.lineTo(this.coords[i][j][0], this.coords[i][j - 1][1]); + } + + this.context.lineTo(xPos, yPos); + } + } + + this.context.stroke(); + } + + /** + * Set the linewidth back to 1 + */ + this.context.lineWidth = 1; + } + + + /** + * Returns the linewidth + * + * @param number i The index of the "line" (/set of coordinates) + */ + RGraph.Scatter.prototype.GetLineWidth = function (i) + { + var linewidth = this.Get('chart.line.linewidth'); + + if (typeof(linewidth) == 'number') { + return linewidth; + + } else if (typeof(linewidth) == 'object') { + if (linewidth[i]) { + return linewidth[i]; + } else { + return linewidth[0]; + } + + alert('[SCATTER] Error! chart.linewidth should be a single number or an array of one or more numbers'); + } + } + + + /** + * Draws vertical bars. Line chart doesn't use a horizontal scale, hence this function + * is not common + */ + RGraph.Scatter.prototype.DrawVBars = function () + { + var canvas = this.canvas; + var context = this.context; + var vbars = this.Get('chart.background.vbars'); + var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight; + + if (vbars) { + + var xmax = this.Get('chart.xmax'); + + for (var i=0; i<vbars.length; ++i) { + var startX = ((vbars[i][0] / xmax) * graphWidth) + this.gutterLeft; + var width = (vbars[i][1] / xmax) * graphWidth; + + context.beginPath(); + context.fillStyle = vbars[i][2]; + context.fillRect(startX, this.gutterTop, width, (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom)); + context.fill(); + } + } + } + + + + + + /** + * Draws in-graph labels. + * + * @param object obj The graph object + */ + RGraph.Scatter.prototype.DrawInGraphLabels = function (obj) + { + var canvas = obj.canvas; + var context = obj.context; + var labels = obj.Get('chart.labels.ingraph'); + var labels_processed = []; + + // Defaults + var fgcolor = 'black'; + var bgcolor = 'white'; + var direction = 1; + + if (!labels) { + return; + } + + /** + * Preprocess the labels array. Numbers are expanded + */ + for (var i=0; i<labels.length; ++i) { + if (typeof(labels[i]) == 'number') { + for (var j=0; j<labels[i]; ++j) { + labels_processed.push(null); + } + } else if (typeof(labels[i]) == 'string' || typeof(labels[i]) == 'object') { + labels_processed.push(labels[i]); + + } else { + labels_processed.push(''); + } + } + + /** + * Turn off any shadow + */ + RGraph.NoShadow(obj); + + if (labels_processed && labels_processed.length > 0) { + + var i=0; + + for (var set=0; set<obj.coords.length; ++set) { + for (var point = 0; point<obj.coords[set].length; ++point) { + if (labels_processed[i]) { + var x = obj.coords[set][point][0]; + var y = obj.coords[set][point][1]; + var length = typeof(labels_processed[i][4]) == 'number' ? labels_processed[i][4] : 25; + + var text_x = x; + var text_y = y - 5 - length; + + context.moveTo(x, y - 5); + context.lineTo(x, y - 5 - length); + + context.stroke(); + context.beginPath(); + + // This draws the arrow + context.moveTo(x, y - 5); + context.lineTo(x - 3, y - 10); + context.lineTo(x + 3, y - 10); + context.closePath(); + + + context.beginPath(); + + // Fore ground color + context.fillStyle = (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][1]) == 'string') ? labels_processed[i][1] : 'black'; + + RGraph.Text(context, + obj.Get('chart.text.font'), + obj.Get('chart.text.size'), + text_x, + text_y, + (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][0]) == 'string') ? labels_processed[i][0] : labels_processed[i], + 'bottom', + 'center', + true, + null, + (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][2]) == 'string') ? labels_processed[i][2] : 'white'); + context.fill(); + } + + i++; + } + } + } + } + + + /** + * This function makes it much easier to get the (if any) point that is currently being hovered over. + * + * @param object e The event object + */ + RGraph.Scatter.prototype.getPoint = function (e) + { + var canvas = e.target; + var obj = canvas.__object__; + var context = obj.context; + var mouseXY = RGraph.getMouseXY(e); + var mouseX = mouseXY[0]; + var mouseY = mouseXY[1]; + var overHotspot = false; + var offset = obj.Get('chart.tooltips.hotspot'); // This is how far the hotspot extends + + for (var set=0; set<obj.coords.length; ++set) { + for (var i=0; i<obj.coords[set].length; ++i) { + + var xCoord = obj.coords[set][i][0]; + var yCoord = obj.coords[set][i][1]; + + if (typeof(yCoord) == 'number') { + if (mouseX <= (xCoord + offset) && + mouseX >= (xCoord - offset) && + mouseY <= (yCoord + offset) && + mouseY >= (yCoord - offset)) { + + return [xCoord, yCoord, set, i, obj.data[set][i][3]]; + } + } else { + + var mark = obj.data[set][i]; + + + /** + * Determine the width + */ + var width = obj.Get('chart.boxplot.width'); + + if (typeof(mark[1][7]) == 'number') { + width = mark[1][7]; + } + + if ( typeof(xCoord) == 'object' + && mouseX > xCoord[0] + && mouseX < xCoord[1] + && mouseY < yCoord[3] + && mouseY > yCoord[1] + ) { + + return [[xCoord[0], xCoord[1] - xCoord[0]], [yCoord[1], yCoord[3] - yCoord[1]], set, i, obj.data[set][i][3]]; + } + } + } + } + } + + + /** + * Draws the above line labels + */ + RGraph.Scatter.prototype.DrawAboveLabels = function () + { + var context = this.context; + var size = this.Get('chart.labels.above.size'); + var font = this.Get('chart.text.font'); + var units_pre = this.Get('chart.units.pre'); + var units_post = this.Get('chart.units.post'); + + + for (var set=0; set<this.coords.length; ++set) { + for (var point=0; point<this.coords[set].length; ++point) { + + var x_val = this.data[set][point][0]; + var y_val = this.data[set][point][1]; + + + var x_pos = this.coords[set][point][0]; + var y_pos = this.coords[set][point][1]; + + RGraph.Text(context, + font, + size, + x_pos, + y_pos - 5 - size, + x_val.toFixed(this.Get('chart.labels.above.decimals')) + ', ' + y_val.toFixed(this.Get('chart.labels.above.decimals')), + 'center', + 'center', + true, + null, + 'rgba(255, 255, 255, 0.7)'); + } + } + }
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