JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>
<br/><!-- Just so that JSFiddle's Result label doesn't overlap the Chart -->
<div id="chartContainer" style="height: 360px; width: 100%;"></div>
JavaScript
window.chart = new CanvasJS.Chart("chartContainer", {
title: {
text: "Histogram using Column Chart"
},
zoomEnabled: true,
rangeChanged: function(e) {
var dpsWithinViewport = 0;
for(var j = 0; j < e.chart.data[0].dataPoints.length; j++) {
var dataPoint = e.chart.data[0].dataPoints[j];
if(dataPoint.x >= e.axisX[0].viewportMinimum && dataPoint.x <= e.axisX[0].viewportMaximum) {
dpsWithinViewport++;
}
}
if(e.trigger === "reset")
updateDataPointWidth(e.chart, e.chart.data[0].dataPoints.length);
else
updateDataPointWidth(e.chart, dpsWithinViewport);
console.log(dpsWithinViewport)
},
data: [
{
type: "column",
dataPoints: [
{ x: 10, y: 71 },
{ x: 20, y: 55 },
{ x: 30, y: 50 },
{ x: 40, y: 65 },
{ x: 50, y: 95 },
{ x: 60, y: 68 },
{ x: 70, y: 28 },
{ x: 80, y: 34 },
{ x: 90, y: 14 }
]
}
]
});
chart.render();
updateDataPointWidth(chart, chart.data[0].dataPoints.length);
//On Resize chart width changes so as the plotArea, so dataPointWidth will vary according to width
$( window ).resize(function() {
updateDataPointWidth(chart, chart.data[0].dataPoints.length);
});
function updateDataPointWidth (chart, dpsLength){
chart.set("dataPointWidth", Math.ceil(chart.axisX[0].bounds.width/dpsLength))
}