87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
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(function ($) {
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function init(plot) {
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function optionProcessor(plot, options) {
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}
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plot.hooks.processOptions.push(optionProcessor);
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var presample = { x: 0, y: 0, n: 0 };
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plot.plotPropertyNode = function(n) {
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var maxData = Math.floor(this.width() / 2);
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if( maxData < 10 ) return;
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var probeWidth = this.getOptions().historyLength / maxData;
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var x = Math.floor(n.ts/probeWidth)*probeWidth;
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var y = n.value * 1.0;
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// first call
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if( presample.n == 0 ) {
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presample.x = x;
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}
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// same period as previous call?
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if( x == presample.x ) {
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// sum up the sample
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presample.y += y;
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presample.n++;
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return;
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}
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var sampledY = presample.y/presample.n;
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var sampledX = presample.x;
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// start sample next period
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presample.x = x;
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presample.y = y;
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presample.n = 1;
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var series = this.getData();
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var data;
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for( var seriesNumber = 0;
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seriesNumber < series.length;
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seriesNumber++ ) {
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if( n.path == series[seriesNumber].propertyPath ) {
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data = series[seriesNumber].data;
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break;
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}
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}
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if( ! data ) return;
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data.push([sampledX, sampledY]);
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var toomany = data.length - maxData;
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if (toomany > 0) {
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// slice returns a new array, so set series data
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series[seriesNumber].data = data.slice(toomany);;
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}
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this.setData(series);
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if( data.length >= 2 ) {
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var xaxis = this.getAxes().xaxis;
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var v = Math.ceil(data[data.length-1][0]);
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v = Math.ceil(v/5)*5;
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xaxis.options.max = v;
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xaxis.options.min = xaxis.options.max - this.getOptions().historyLength;
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var yaxis = this.getAxes().yaxis;
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yaxis.options.min = Math.floor(yaxis.datamin);
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yaxis.options.max = Math.ceil(yaxis.datamax);
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this.setupGrid();
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}
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this.draw();
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}
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}
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var options = { historyLength: 60 };
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$.plot.plugins.push({
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init: init,
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options: options,
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name: "propflot",
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version: "0.1"
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});
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})(jQuery);
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