From c83bca9a9de29c155d519ccea2e8a8d07acc5bac Mon Sep 17 00:00:00 2001 From: Yves Fischer Date: Wed, 17 Apr 2013 00:13:33 +0200 Subject: leveldb --- datastore-leveldb/public/lib/flot-0.7/FAQ.txt | 76 +++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) create mode 100644 datastore-leveldb/public/lib/flot-0.7/FAQ.txt (limited to 'datastore-leveldb/public/lib/flot-0.7/FAQ.txt') diff --git a/datastore-leveldb/public/lib/flot-0.7/FAQ.txt b/datastore-leveldb/public/lib/flot-0.7/FAQ.txt new file mode 100644 index 0000000..e02b761 --- /dev/null +++ b/datastore-leveldb/public/lib/flot-0.7/FAQ.txt @@ -0,0 +1,76 @@ +Frequently asked questions +-------------------------- + +Q: How much data can Flot cope with? + +A: Flot will happily draw everything you send to it so the answer +depends on the browser. The excanvas emulation used for IE (built with +VML) makes IE by far the slowest browser so be sure to test with that +if IE users are in your target group. + +1000 points is not a problem, but as soon as you start having more +points than the pixel width, you should probably start thinking about +downsampling/aggregation as this is near the resolution limit of the +chart anyway. If you downsample server-side, you also save bandwidth. + + +Q: Flot isn't working when I'm using JSON data as source! + +A: Actually, Flot loves JSON data, you just got the format wrong. +Double check that you're not inputting strings instead of numbers, +like [["0", "-2.13"], ["5", "4.3"]]. This is most common mistake, and +the error might not show up immediately because Javascript can do some +conversion automatically. + + +Q: Can I export the graph? + +A: This is a limitation of the canvas technology. There's a hook in +the canvas object for getting an image out, but you won't get the tick +labels. And it's not likely to be supported by IE. At this point, your +best bet is probably taking a screenshot, e.g. with PrtScn. + + +Q: The bars are all tiny in time mode? + +A: It's not really possible to determine the bar width automatically. +So you have to set the width with the barWidth option which is NOT in +pixels, but in the units of the x axis (or the y axis for horizontal +bars). For time mode that's milliseconds so the default value of 1 +makes the bars 1 millisecond wide. + + +Q: Can I use Flot with libraries like Mootools or Prototype? + +A: Yes, Flot supports it out of the box and it's easy! Just use jQuery +instead of $, e.g. call jQuery.plot instead of $.plot and use +jQuery(something) instead of $(something). As a convenience, you can +put in a DOM element for the graph placeholder where the examples and +the API documentation are using jQuery objects. + +Depending on how you include jQuery, you may have to add one line of +code to prevent jQuery from overwriting functions from the other +libraries, see the documentation in jQuery ("Using jQuery with other +libraries") for details. + + +Q: Flot doesn't work with [insert name of Javascript UI framework]! + +A: The only non-standard thing used by Flot is the canvas tag; +otherwise it is simply a series of absolute positioned divs within the +placeholder tag you put in. If this is not working, it's probably +because the framework you're using is doing something weird with the +DOM, or you're using it the wrong way. + +A common problem is that there's display:none on a container until the +user does something. Many tab widgets work this way, and there's +nothing wrong with it - you just can't call Flot inside a display:none +container as explained in the README so you need to hold off the Flot +call until the container is actually displayed (or use +visibility:hidden instead of display:none or move the container +off-screen). + +If you find there's a specific thing we can do to Flot to help, feel +free to submit a bug report. Otherwise, you're welcome to ask for help +on the forum/mailing list, but please don't submit a bug report to +Flot. -- cgit v1.2.1