hhow-datavis-prototype/test1.js at master · NCH-BPC-Informatics/hhow-datavis-prototype · GitHub

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var tempBarChart  = dc.barChart("#barChartTemp");
var psalBarChart = dc.barChart("#barChartPsal");

tempBarChart.yAxis().ticks(0);
psalBarChart.yAxis().ticks(0);

json = [{
			"temp": 23,
			"psal": 35
		},
		{
			"temp": 23,
			"psal": 35,
		},
		{
			"temp": 23,
			"psal": 30
		},
		{
			"temp": 23,
			"psal": 30
		},
		{
			"temp": 23,
			"psal": 33
		},
		{
			"temp": 20,
			"psal": 38
		},
		{
			"temp": 22,
			"psal": 33
		},
		{
			"temp": 27,
			"psal": 37
		},
		{
			"temp": 21,
			"psal": 34
		},
		{
			"temp": 31,
			"psal": 38
		},
		{

			"temp": 35,
			"psal": 39
		},
		{
			"temp": 32,
			"psal": 31
		},
		{

			"temp": 32,
			"psal": 31
		},
		{
			"temp": 20,
			"psal": 32
		},
		{
			"temp": 29,
			"psal": 31
		},
		{
			"temp": 33,
			"psal": 38
		},
		{
			"temp": 21,
			"psal": 34
		},
		{
			"temp": 31,
			"psal": 38
		},
		{
			"temp": 35,
			"psal": 39
		},
		{
			"temp": 32,
			"psal": 31
		},
		{
			"temp": 21,
			"psal": 34,
		},
		{
			"temp": 31,
			"psal": 38
		},
		{
			"temp": 35,
			"psal": 39
		},
		{
			"temp": 40,
			"psal": 35
		}];

	var xFilter = crossfilter(json);
	var totalReadings = xFilter.size();
	var all = xFilter.groupAll();

    // Updated version
    dc.dataCount(".dc-data-count")
				.dimension(xFilter)
				.group(all);


	// dimensions and groups
	var tempDim = xFilter.dimension(function (d) { return d.temp; });
	var tempGroup = tempDim.group().reduceCount(function (d) { return d.temp; });

	var psalDim = xFilter.dimension(function(d) {return d.psal;});
	var psalGroup= psalDim.group().reduceCount(function(d) {return d.psal;});
	var brush = d3.svg.brush();

	// Charts
		tempBarChart
			.width(300).height(150)
			.dimension(tempDim)
			.group(tempGroup)
			.x(d3.scale.linear()
				.domain([15, 45]))
			.xAxisLabel("Temperature")
            .centerBar(true)
			.on("brushstart", brushed)

		psalBarChart
			.width(300).height(150)
			.dimension(psalDim)
			.group(psalGroup)
			.x(d3.scale.linear()
				.domain([25, 40]))
			.xAxisLabel("Salinity")
            .centerBar(true)
			.on("brushstart", brushed)

		// keep track of total readings
		d3.select("#total").text(totalReadings);

		// First listener test
		function brushed() {
			console.log("brush test 1");
			d3.select("#current").text(all.value());
		}

		// Second listener test
		brush.on("brushstart", function() {
			console.log("brush test 2");
		});


		// render all charts
		dc.renderAll();