Add jquery and flot to catapult/third_party.

third_party/flot/jquery.flot.errorbars.js

+/* Flot plugin for plotting error bars.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Error bars are used to show standard deviation and other statistical
+properties in a plot.
+
+* Created by Rui Pereira  -  rui (dot) pereira (at) gmail (dot) com
+
+This plugin allows you to plot error-bars over points. Set "errorbars" inside
+the points series to the axis name over which there will be error values in
+your data array (*even* if you do not intend to plot them later, by setting
+"show: null" on xerr/yerr).
+
+The plugin supports these options:
+
+        series: {
+                points: {
+                        errorbars: "x" or "y" or "xy",
+                        xerr: {
+                                show: null/false or true,
+                                asymmetric: null/false or true,
+                                upperCap: null or "-" or function,
+                                lowerCap: null or "-" or function,
+                                color: null or color,
+                                radius: null or number
+                        },
+                        yerr: { same options as xerr }
+                }
+        }
+
+Each data point array is expected to be of the type:
+
+        "x"  [ x, y, xerr ]
+        "y"  [ x, y, yerr ]
+        "xy" [ x, y, xerr, yerr ]
+
+Where xerr becomes xerr_lower,xerr_upper for the asymmetric error case, and
+equivalently for yerr. Eg., a datapoint for the "xy" case with symmetric
+error-bars on X and asymmetric on Y would be:
+
+        [ x, y, xerr, yerr_lower, yerr_upper ]
+
+By default no end caps are drawn. Setting upperCap and/or lowerCap to "-" will
+draw a small cap perpendicular to the error bar. They can also be set to a
+user-defined drawing function, with (ctx, x, y, radius) as parameters, as eg.
+
+        function drawSemiCircle( ctx, x, y, radius ) {
+                ctx.beginPath();
+                ctx.arc( x, y, radius, 0, Math.PI, false );
+                ctx.moveTo( x - radius, y );
+                ctx.lineTo( x + radius, y );
+                ctx.stroke();
+        }
+
+Color and radius both default to the same ones of the points series if not
+set. The independent radius parameter on xerr/yerr is useful for the case when
+we may want to add error-bars to a line, without showing the interconnecting
+points (with radius: 0), and still showing end caps on the error-bars.
+shadowSize and lineWidth are derived as well from the points series.
+
+*/
+
+(function ($) {
+    var options = {
+        series: {
+            points: {
+                errorbars: null, //should be 'x', 'y' or 'xy'
+                xerr: { err: 'x', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null},
+                yerr: { err: 'y', show: null, asymmetric: null, upperCap: null, lowerCap: null, color: null, radius: null}
+            }
+        }
+    };
+
+    function processRawData(plot, series, data, datapoints){
+        if (!series.points.errorbars)
+            return;
+
+        // x,y values
+        var format = [
+            { x: true, number: true, required: true },
+            { y: true, number: true, required: true }
+        ];
+
+        var errors = series.points.errorbars;
+        // error bars - first X then Y
+        if (errors == 'x' || errors == 'xy') {
+            // lower / upper error
+            if (series.points.xerr.asymmetric) {
+                format.push({ x: true, number: true, required: true });
+                format.push({ x: true, number: true, required: true });
+            } else
+                format.push({ x: true, number: true, required: true });
+        }
+        if (errors == 'y' || errors == 'xy') {
+            // lower / upper error
+            if (series.points.yerr.asymmetric) {
+                format.push({ y: true, number: true, required: true });
+                format.push({ y: true, number: true, required: true });
+            } else
+                format.push({ y: true, number: true, required: true });
+        }
+        datapoints.format = format;
+    }
+
+    function parseErrors(series, i){
+
+        var points = series.datapoints.points;
+
+        // read errors from points array
+        var exl = null,
+                exu = null,
+                eyl = null,
+                eyu = null;
+        var xerr = series.points.xerr,
+                yerr = series.points.yerr;
+
+        var eb = series.points.errorbars;
+        // error bars - first X
+        if (eb == 'x' || eb == 'xy') {
+            if (xerr.asymmetric) {
+                exl = points[i + 2];
+                exu = points[i + 3];
+                if (eb == 'xy')
+                    if (yerr.asymmetric){
+                        eyl = points[i + 4];
+                        eyu = points[i + 5];
+                    } else eyl = points[i + 4];
+            } else {
+                exl = points[i + 2];
+                if (eb == 'xy')
+                    if (yerr.asymmetric) {
+                        eyl = points[i + 3];
+                        eyu = points[i + 4];
+                    } else eyl = points[i + 3];
+            }
+        // only Y
+        } else if (eb == 'y')
+            if (yerr.asymmetric) {
+                eyl = points[i + 2];
+                eyu = points[i + 3];
+            } else eyl = points[i + 2];
+
+        // symmetric errors?
+        if (exu == null) exu = exl;
+        if (eyu == null) eyu = eyl;
+
+        var errRanges = [exl, exu, eyl, eyu];
+        // nullify if not showing
+        if (!xerr.show){
+            errRanges[0] = null;
+            errRanges[1] = null;
+        }
+        if (!yerr.show){
+            errRanges[2] = null;
+            errRanges[3] = null;
+        }
+        return errRanges;
+    }
+
+    function drawSeriesErrors(plot, ctx, s){
+
+        var points = s.datapoints.points,
+                ps = s.datapoints.pointsize,
+                ax = [s.xaxis, s.yaxis],
+                radius = s.points.radius,
+                err = [s.points.xerr, s.points.yerr];
+
+        //sanity check, in case some inverted axis hack is applied to flot
+        var invertX = false;
+        if (ax[0].p2c(ax[0].max) < ax[0].p2c(ax[0].min)) {
+            invertX = true;
+            var tmp = err[0].lowerCap;
+            err[0].lowerCap = err[0].upperCap;
+            err[0].upperCap = tmp;
+        }
+
+        var invertY = false;
+        if (ax[1].p2c(ax[1].min) < ax[1].p2c(ax[1].max)) {
+            invertY = true;
+            var tmp = err[1].lowerCap;
+            err[1].lowerCap = err[1].upperCap;
+            err[1].upperCap = tmp;
+        }
+
+        for (var i = 0; i < s.datapoints.points.length; i += ps) {
+
+            //parse
+            var errRanges = parseErrors(s, i);
+
+            //cycle xerr & yerr
+            for (var e = 0; e < err.length; e++){
+
+                var minmax = [ax[e].min, ax[e].max];
+
+                //draw this error?
+                if (errRanges[e * err.length]){
+
+                    //data coordinates
+                    var x = points[i],
+                        y = points[i + 1];
+
+                    //errorbar ranges
+                    var upper = [x, y][e] + errRanges[e * err.length + 1],
+                        lower = [x, y][e] - errRanges[e * err.length];
+
+                    //points outside of the canvas
+                    if (err[e].err == 'x')
+                        if (y > ax[1].max || y < ax[1].min || upper < ax[0].min || lower > ax[0].max)
+                            continue;
+                    if (err[e].err == 'y')
+                        if (x > ax[0].max || x < ax[0].min || upper < ax[1].min || lower > ax[1].max)
+                            continue;
+
+                    // prevent errorbars getting out of the canvas
+                    var drawUpper = true,
+                        drawLower = true;
+
+                    if (upper > minmax[1]) {
+                        drawUpper = false;
+                        upper = minmax[1];
+                    }
+                    if (lower < minmax[0]) {
+                        drawLower = false;
+                        lower = minmax[0];
+                    }
+
+                    //sanity check, in case some inverted axis hack is applied to flot
+                    if ((err[e].err == 'x' && invertX) || (err[e].err == 'y' && invertY)) {
+                        //swap coordinates
+                        var tmp = lower;
+                        lower = upper;
+                        upper = tmp;
+                        tmp = drawLower;
+                        drawLower = drawUpper;
+                        drawUpper = tmp;
+                        tmp = minmax[0];
+                        minmax[0] = minmax[1];
+                        minmax[1] = tmp;
+                    }
+
+                    // convert to pixels
+                    x = ax[0].p2c(x),
+                        y = ax[1].p2c(y),
+                        upper = ax[e].p2c(upper);
+                    lower = ax[e].p2c(lower);
+                    minmax[0] = ax[e].p2c(minmax[0]);
+                    minmax[1] = ax[e].p2c(minmax[1]);
+
+                    //same style as points by default
+                    var lw = err[e].lineWidth ? err[e].lineWidth : s.points.lineWidth,
+                        sw = s.points.shadowSize != null ? s.points.shadowSize : s.shadowSize;
+
+                    //shadow as for points
+                    if (lw > 0 && sw > 0) {
+                        var w = sw / 2;
+                        ctx.lineWidth = w;
+                        ctx.strokeStyle = "rgba(0,0,0,0.1)";
+                        drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w + w/2, minmax);
+
+                        ctx.strokeStyle = "rgba(0,0,0,0.2)";
+                        drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, w/2, minmax);
+                    }
+
+                    ctx.strokeStyle = err[e].color? err[e].color: s.color;
+                    ctx.lineWidth = lw;
+                    //draw it
+                    drawError(ctx, err[e], x, y, upper, lower, drawUpper, drawLower, radius, 0, minmax);
+                }
+            }
+        }
+    }
+
+    function drawError(ctx,err,x,y,upper,lower,drawUpper,drawLower,radius,offset,minmax){
+
+        //shadow offset
+        y += offset;
+        upper += offset;
+        lower += offset;
+
+        // error bar - avoid plotting over circles
+        if (err.err == 'x'){
+            if (upper > x + radius) drawPath(ctx, [[upper,y],[Math.max(x + radius,minmax[0]),y]]);
+            else drawUpper = false;
+            if (lower < x - radius) drawPath(ctx, [[Math.min(x - radius,minmax[1]),y],[lower,y]] );
+            else drawLower = false;
+        }
+        else {
+            if (upper < y - radius) drawPath(ctx, [[x,upper],[x,Math.min(y - radius,minmax[0])]] );
+            else drawUpper = false;
+            if (lower > y + radius) drawPath(ctx, [[x,Math.max(y + radius,minmax[1])],[x,lower]] );
+            else drawLower = false;
+        }
+
+        //internal radius value in errorbar, allows to plot radius 0 points and still keep proper sized caps
+        //this is a way to get errorbars on lines without visible connecting dots
+        radius = err.radius != null? err.radius: radius;
+
+        // upper cap
+        if (drawUpper) {
+            if (err.upperCap == '-'){
+                if (err.err=='x') drawPath(ctx, [[upper,y - radius],[upper,y + radius]] );
+                else drawPath(ctx, [[x - radius,upper],[x + radius,upper]] );
+            } else if ($.isFunction(err.upperCap)){
+                if (err.err=='x') err.upperCap(ctx, upper, y, radius);
+                else err.upperCap(ctx, x, upper, radius);
+            }
+        }
+        // lower cap
+        if (drawLower) {
+            if (err.lowerCap == '-'){
+                if (err.err=='x') drawPath(ctx, [[lower,y - radius],[lower,y + radius]] );
+                else drawPath(ctx, [[x - radius,lower],[x + radius,lower]] );
+            } else if ($.isFunction(err.lowerCap)){
+                if (err.err=='x') err.lowerCap(ctx, lower, y, radius);
+                else err.lowerCap(ctx, x, lower, radius);
+            }
+        }
+    }
+
+    function drawPath(ctx, pts){
+        ctx.beginPath();
+        ctx.moveTo(pts[0][0], pts[0][1]);
+        for (var p=1; p < pts.length; p++)
+            ctx.lineTo(pts[p][0], pts[p][1]);
+        ctx.stroke();
+    }
+
+    function draw(plot, ctx){
+        var plotOffset = plot.getPlotOffset();
+
+        ctx.save();
+        ctx.translate(plotOffset.left, plotOffset.top);
+        $.each(plot.getData(), function (i, s) {
+            if (s.points.errorbars && (s.points.xerr.show || s.points.yerr.show))
+                drawSeriesErrors(plot, ctx, s);
+        });
+        ctx.restore();
+    }
+
+    function init(plot) {
+        plot.hooks.processRawData.push(processRawData);
+        plot.hooks.draw.push(draw);
+    }
+
+    $.plot.plugins.push({
+                init: init,
+                options: options,
+                name: 'errorbars',
+                version: '1.0'
+            });
+})(jQuery);