diff options
author | Chris Schlaeger <chris@linux.com> | 2014-08-12 21:56:44 +0200 |
---|---|---|
committer | Chris Schlaeger <chris@linux.com> | 2014-08-12 21:56:44 +0200 |
commit | ea346a785dc1b3f7c156f6fc33da634e1f1a627b (patch) | |
tree | af67530553d20b6e82ad60fd79593e9c4abf5565 /misc/flot/jquery.flot.threshold.js | |
parent | 59741cd535c47f25971bf8c32b25da25ceadc6d5 (diff) | |
download | postrunner-ea346a785dc1b3f7c156f6fc33da634e1f1a627b.zip |
Adding jquery, flot and openlayers to be included with the GEM.v0.0.4
Diffstat (limited to 'misc/flot/jquery.flot.threshold.js')
-rw-r--r-- | misc/flot/jquery.flot.threshold.js | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/misc/flot/jquery.flot.threshold.js b/misc/flot/jquery.flot.threshold.js new file mode 100644 index 0000000..8c99c40 --- /dev/null +++ b/misc/flot/jquery.flot.threshold.js @@ -0,0 +1,142 @@ +/* Flot plugin for thresholding data. + +Copyright (c) 2007-2014 IOLA and Ole Laursen. +Licensed under the MIT license. + +The plugin supports these options: + + series: { + threshold: { + below: number + color: colorspec + } + } + +It can also be applied to a single series, like this: + + $.plot( $("#placeholder"), [{ + data: [ ... ], + threshold: { ... } + }]) + +An array can be passed for multiple thresholding, like this: + + threshold: [{ + below: number1 + color: color1 + },{ + below: number2 + color: color2 + }] + +These multiple threshold objects can be passed in any order since they are +sorted by the processing function. + +The data points below "below" are drawn with the specified color. This makes +it easy to mark points below 0, e.g. for budget data. + +Internally, the plugin works by splitting the data into two series, above and +below the threshold. The extra series below the threshold will have its label +cleared and the special "originSeries" attribute set to the original series. +You may need to check for this in hover events. + +*/ + +(function ($) { + var options = { + series: { threshold: null } // or { below: number, color: color spec} + }; + + function init(plot) { + function thresholdData(plot, s, datapoints, below, color) { + var ps = datapoints.pointsize, i, x, y, p, prevp, + thresholded = $.extend({}, s); // note: shallow copy + + thresholded.datapoints = { points: [], pointsize: ps, format: datapoints.format }; + thresholded.label = null; + thresholded.color = color; + thresholded.threshold = null; + thresholded.originSeries = s; + thresholded.data = []; + + var origpoints = datapoints.points, + addCrossingPoints = s.lines.show; + + var threspoints = []; + var newpoints = []; + var m; + + for (i = 0; i < origpoints.length; i += ps) { + x = origpoints[i]; + y = origpoints[i + 1]; + + prevp = p; + if (y < below) + p = threspoints; + else + p = newpoints; + + if (addCrossingPoints && prevp != p && x != null + && i > 0 && origpoints[i - ps] != null) { + var interx = x + (below - y) * (x - origpoints[i - ps]) / (y - origpoints[i - ps + 1]); + prevp.push(interx); + prevp.push(below); + for (m = 2; m < ps; ++m) + prevp.push(origpoints[i + m]); + + p.push(null); // start new segment + p.push(null); + for (m = 2; m < ps; ++m) + p.push(origpoints[i + m]); + p.push(interx); + p.push(below); + for (m = 2; m < ps; ++m) + p.push(origpoints[i + m]); + } + + p.push(x); + p.push(y); + for (m = 2; m < ps; ++m) + p.push(origpoints[i + m]); + } + + datapoints.points = newpoints; + thresholded.datapoints.points = threspoints; + + if (thresholded.datapoints.points.length > 0) { + var origIndex = $.inArray(s, plot.getData()); + // Insert newly-generated series right after original one (to prevent it from becoming top-most) + plot.getData().splice(origIndex + 1, 0, thresholded); + } + + // FIXME: there are probably some edge cases left in bars + } + + function processThresholds(plot, s, datapoints) { + if (!s.threshold) + return; + + if (s.threshold instanceof Array) { + s.threshold.sort(function(a, b) { + return a.below - b.below; + }); + + $(s.threshold).each(function(i, th) { + thresholdData(plot, s, datapoints, th.below, th.color); + }); + } + else { + thresholdData(plot, s, datapoints, s.threshold.below, s.threshold.color); + } + } + + plot.hooks.processDatapoints.push(processThresholds); + } + + $.plot.plugins.push({ + init: init, + options: options, + name: 'threshold', + version: '1.2' + }); +})(jQuery); |