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annotate gtc/gtc.js @ 144:90f3021e3137

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myrss2: FEEDS: Remove longform.org; add propublic.org
author paulo
date Tue, 28 May 2024 06:23:58 +0000
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paulo@89 1 var myChart;
paulo@89 2 var myData;
paulo@89 3 var showCorrBtn = document.getElementById('showcorr');
paulo@89 4
paulo@89 5 nv.addGraph(function() {
paulo@89 6 myChart = nv.models.scatterChart()
paulo@89 7 .showLegend(false)
paulo@89 8 .showDistX(true)
paulo@89 9 .showDistY(true)
paulo@89 10 .xDomain([-1, 1])
paulo@89 11 .yDomain([-1, 1])
paulo@89 12 .duration(350)
paulo@89 13 .color(d3.scale.category10().range());
paulo@89 14 myChart.tooltip.contentGenerator(function(data) {
paulo@89 15 return '(' + data.point.x.toFixed(2) + ', ' + data.point.y.toFixed(2) + ')';
paulo@89 16 });
paulo@89 17
paulo@89 18 myChart.xAxis.tickFormat(d3.format('.02f'));
paulo@89 19 myChart.yAxis.tickFormat(d3.format('.02f'));
paulo@89 20
paulo@89 21 reload();
paulo@89 22
paulo@89 23 return myChart;
paulo@89 24 });
paulo@89 25
paulo@89 26
paulo@89 27 function randomData(groups, points) {
paulo@89 28 var data = [],
paulo@89 29 shapes = ['circle', 'cross', 'triangle-up', 'triangle-down', 'diamond', 'square'],
paulo@89 30 random = d3.random.normal();
paulo@89 31
paulo@89 32 for (i = 0; i < groups; i++) {
paulo@89 33 data.push({
paulo@89 34 key: 'Group ' + i,
paulo@89 35 values: []
paulo@89 36 });
paulo@89 37
paulo@89 38 for (j = 0; j < points; j++) {
paulo@89 39 data[i].values.push({
paulo@89 40 x: random(),
paulo@89 41 y: random(),
paulo@89 42 size: Math.random(),
paulo@89 43 shape: (Math.random() > 0.95) ? shapes[j % 6] : 'circle'
paulo@89 44 });
paulo@89 45 }
paulo@89 46 }
paulo@89 47
paulo@89 48 return data;
paulo@89 49 }
paulo@89 50
paulo@89 51 function myDataGen() {
paulo@89 52 var data = [];
paulo@89 53 var values = [];
paulo@89 54 var n = 25;
paulo@89 55 var m = 2*Math.random() - 1.0;
paulo@89 56 var dv = Math.random();
paulo@89 57 var normal = d3.random.normal(0.0, dv)
paulo@89 58
paulo@89 59 for (i = 0; i < n; i++) {
paulo@89 60 var x = i/n + 0.5*normal() - 0.5;
paulo@89 61 var y = m*x + normal();
paulo@89 62 values.push({
paulo@89 63 x: x,
paulo@89 64 y: y,
paulo@89 65 size: 2.0,
paulo@89 66 shape: 'circle',
paulo@89 67 });
paulo@89 68 }
paulo@89 69
paulo@89 70 data.push({
paulo@89 71 //key: 'Points',
paulo@89 72 values: values,
paulo@89 73 //slope: m,
paulo@89 74 //intercept: 0.001,
paulo@89 75 })
paulo@89 76
paulo@89 77 return data;
paulo@89 78 }
paulo@89 79
paulo@89 80 function corr(values) {
paulo@89 81 var x_a = [];
paulo@89 82 var y_a = [];
paulo@89 83
paulo@89 84 for (i = 0; i < values.length; i++) {
paulo@89 85 x_a.push(values[i].x);
paulo@89 86 y_a.push(values[i].y);
paulo@89 87 }
paulo@89 88
paulo@89 89 return ss.sampleCorrelation(x_a, y_a);
paulo@89 90 }
paulo@89 91
paulo@89 92 function lr(values) {
paulo@89 93 var x_y = [];
paulo@89 94
paulo@89 95 for (i = 0; i < values.length; i++) {
paulo@89 96 x_y.push([values[i].x, values[i].y]);
paulo@89 97 }
paulo@89 98
paulo@89 99 return ss.linearRegression(x_y);
paulo@89 100 }
paulo@89 101
paulo@89 102 function print_corr() {
paulo@89 103 console.log('corr = ' + corr(myData[0].values))
paulo@89 104 }
paulo@89 105
paulo@89 106 function print_lr() {
paulo@89 107 var lro = lr(myData[0].values);
paulo@89 108 console.log('m = ' + lro.m);
paulo@89 109 console.log('b = ' + lro.b);
paulo@89 110 }
paulo@89 111
paulo@89 112 function add_lr(lro, data) {
paulo@89 113 data.push({
paulo@89 114 values: [],
paulo@89 115 slope: lro.m,
paulo@89 116 intercept: lro.b,
paulo@89 117 })
paulo@89 118 }
paulo@89 119
paulo@89 120 function show_corr() {
paulo@89 121 var ans = corr(myData[0].values);
paulo@89 122 showCorrBtn.textContent = ans.toFixed(2);
paulo@89 123 showCorrBtn.onclick = reload;
paulo@89 124 }
paulo@89 125
paulo@89 126 function reload() {
paulo@89 127 myData = myDataGen();
paulo@89 128 add_lr(lr(myData[0].values), myData);
paulo@89 129 showCorrBtn.disabled = false;
paulo@89 130 showCorrBtn.textContent = 'Show Correlation';
paulo@89 131 showCorrBtn.onclick = show_corr;
paulo@89 132
paulo@89 133 d3.select('#chart svg')
paulo@89 134 .style('height', '95%')
paulo@89 135 .datum(myData)
paulo@89 136 .call(myChart);
paulo@89 137
paulo@89 138 nv.utils.windowResize(myChart.update);
paulo@89 139 }