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/ 7 Years ago, fri, november 3, 2017, 12:00:00
I am using the Chart.js library to display some values in stacked bars but I am struggling in trying to find out how to display the values inside of the bars, that is,
Right now, I have the following code that displays the numbers on top of the bars but I would like to know how can I display them inside of the bars.
var numberWithCommas = function(x) {
return x.toString().replace(/B(?=(d{3})+(?!d))/g, ,);
};
var dataPack1 = [50000, 22000, 26000, 35000, 55000, 55000, 56000, 59000, 60000, 61000, 60100, 62000];
var dataPack2 = [0, 6000, 13000, 14000, 50060, 20030, 20070, 35000, 41000, 4020, 40030, 70050];
var dates = [January, February, March, April, May, June, July, August, September, October, November, December];
// Chart.defaults.global.elements.rectangle.backgroundColor = '#FF0000';
var bar_ctx = document.getElementById('bar-chart');
var bar_chart = new Chart(bar_ctx, {
type: 'bar',
data: {
labels: dates,
datasets: [
{
label: 'SoftEnterprises, Sales',
data: dataPack1,
backgroundColor: rgba(55, 160, 225, 0.7),
hoverBackgroundColor: rgba(55, 160, 225, 0.7),
hoverBorderWidth: 2,
hoverBorderColor: 'lightgrey'
},
{
label: 'SmartSystems, Sales',
data: dataPack2,
backgroundColor: rgba(225, 58, 55, 0.7),
hoverBackgroundColor: rgba(225, 58, 55, 0.7),
hoverBorderWidth: 2,
hoverBorderColor: 'lightgrey'
},
]
},
options: {
animation: {
duration: 10,
onComplete: function(){
var chartInstance = this.chart,
ctx = chartInstance.ctx;
ctx.font = Chart.helpers.fontString(Chart.defaults.global.defaultFontSize, Chart.defaults.global.defaultFontStyle, Chart.defaults.global.defaultFontFamily);
ctx.textAlign = 'center';
ctx.textBaseline = 'bottom';
ctx.fillStyle = '#000';
this.data.datasets.forEach(function(dataset, i) {
var isHidden = dataset._meta[0].hidden; //'hidden' property of dataset
if (!isHidden) { //if dataset is not hidden
var meta = chartInstance.controller.getDatasetMeta(i);
meta.data.forEach(function(bar, index) {
var data = dataset.data[index];
ctx.fillText(data, bar._model.x, bar._model.y - 5);
});
}
});
}
},
tooltips: {
mode: 'label',
callbacks: {
label: function(tooltipItem, data) {
return data.datasets[tooltipItem.datasetIndex].label + : + numberWithCommas(tooltipItem.yLabel);
}
}
},
scales: {
xAxes: [{
stacked: true,
gridLines: { display: false },
}],
yAxes: [{
stacked: true,
ticks: {
callback: function(value) { return numberWithCommas(value);
},
},
}],
}, // scales
legend: {display: true}
} // options
},
);<script src=https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.min.js></script>
<canvas id=bar-chart width=600 height=350></canvas>
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