Y have this issue:
User 1 repeats twice in two colors, gray and white.
Gray should not be seen
This problem starts when I put styles to the x axis, it repeats the labels.
is there any solution for this case?
The requirement is simply to change the color of the axis labels and ticks.
The gray bar is at the bottom, that is, it does not stack with the red and blue ones
var data = {
labels: ["User1", "User2"],
datasets: [
{
stack:1,
label: "TotalTime",
backgroundColor: "red",
borderWidth: 1,
data: [50, 50],
yAxisID:1
},
{
stack:1,
label: "TotalTime",
backgroundColor: "blue",
borderWidth: 1,
data: [40, 40],
yAxisID:1
},
{
label: "Leave",
backgroundColor: "rgba(191,191,191, 0.5)",
borderWidth: 1,
data: [100, 100],
yAxisID:1
},
],
};
var options = {
indexAxis: "y",
scales: {
y: {
ticks: {
color: "white",
font: {
size: 12,
},
},
stacked: true,
},
x: {
ticks: {
color: "white",
font: {
size: 12,
},
},
}
}
}
var ctx = document.getElementById("myChart").getContext("2d");
var myBarChart = new Chart(ctx, {
type: 'bar',
data: data,
options: options
});
canvas{
background-color:black
}
<script src="https://cdn.jsdelivr.net/npm/chart.js#3.6.2/dist/chart.min.js"></script>
<canvas id="myChart" width="500" height="300"></canvas>
It is because of your yAxisID, you dont define it but chart.js still makes a new axis for it since it isnt made by you with that id, so if you remove that or make it y which you have defined it doesnt make it again anymore
var data = {
labels: ["User1", "User2"],
datasets: [{
label: "TotalTime",
backgroundColor: "red",
borderWidth: 1,
data: [50, 50],
},
{
label: "TotalTime",
backgroundColor: "blue",
borderWidth: 1,
data: [40, 40],
},
{
label: "Leave",
backgroundColor: "rgba(191,191,191, 0.5)",
borderWidth: 1,
data: [100, 100],
},
],
};
var options = {
indexAxis: "y",
scales: {
y: {
ticks: {
color: "white",
font: {
size: 12,
},
},
stacked: true,
},
x: {
stacked: true,
ticks: {
color: "white",
font: {
size: 12,
},
},
}
}
}
var ctx = document.getElementById("myChart").getContext("2d");
var myBarChart = new Chart(ctx, {
type: 'bar',
data: data,
options: options
});
canvas {
background-color: black
}
<script src="https://cdn.jsdelivr.net/npm/chart.js#3.6.2/dist/chart.min.js"></script>
<canvas id="myChart" width="500" height="300"></canvas>
Related
Hello I have stuck with add space between stacked bar, I mean I need to add space or margin or padding between bar color
this what I'm done with
and what I want is like this
as you can see there's is space between green, red and yellow bar
are possible to add it?
I've trying to add options.layout.padding but still not working
const borderRadius = 8;
const borderRadiusAllCorners = { topLeft: borderRadius, topRight: borderRadius, bottomLeft: borderRadius, bottomRight: borderRadius };
const labels = ['0%', '25%', '50%', '75%', '100%'];
const data = {
labels: labels,
datasets: [
{
label: 'LCP',
data: [
90,80,70
],
borderColor: 'green',
backgroundColor: 'green',
borderWidth: 0,
borderRadius: borderRadiusAllCorners,
borderSkipped: 'false',
},
{
label: 'FID',
data: [
8,15,15
],
borderColor: 'yellow',
backgroundColor: 'yellow',
borderWidth: 0,
borderRadius: borderRadiusAllCorners,
borderSkipped: 'false',
},
{
label: 'CLS',
data: [
2,5,15
],
borderColor: 'red',
backgroundColor: 'red',
borderWidth: 0,
borderRadius: borderRadiusAllCorners,
borderSkipped: 'false',
},
]
};
const ctx = $('#cwv-chart');
const myChart = new Chart(ctx, {
type: 'bar',
data: data,
options: {
indexAxis: 'y',
elements: {
bar: {
borderRadius: 6,
borderWidth: 2,
}
},
scales: {
x: {
display: false,
stacked: true,
offset: true,
},
y: {
display: false,
stacked: true
}
},
responsive: true,
plugins: {
legend: {
display: false,
},
title: {
display: false,
}
}
},
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<canvas id="cwv-chart" height="150"></canvas>
The options.layout.padding is just adding space around the chart area and not between data elements.
I'm doing something like that with a simple plugin, changing the base of the bar element, at runtime.
EDIT: the plugin has been updated in order to avoid bugs when chart hovering.
See snippet:
const ctx = document.getElementById("myChart");
const plugin = {
id: 'fillGaps',
beforeDatasetDraw(chart, args) {
if (args.index > 0 && chart.isDatasetVisible(args.index)) {
args.meta.data.forEach(function(item, i) {
const {width} = item.getProps(['width'], true);
item.base = item.x - width + 3;
});
}
}
};
const myChart = new Chart(ctx, {
type: 'bar',
plugins: [plugin],
data: {
labels: ['January', 'Fabruary', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'user 1 online',
data: [50, 35, 45, 47, 10, 3, 27],
backgroundColor: 'rgba(40, 139, 170, 1)',
borderWidth: 0,
borderSkipped: false,
},
{
label: 'user 2 online',
data: [50, 35, 45, 47, 10, 3, 27],
backgroundColor: 'orange',
borderWidth: 0,
borderSkipped: false,
}]
},
options: {
indexAxis: 'y',
//animation: false,
elements: {
bar: {
borderRadius: {
topLeft: 12,
topRight: 12,
bottomLeft: 12,
bottomRight: 12
},
}
},
scales: {
y: {
stacked: true,
},
x: {
stacked: true,
}
}
}
});
.myChartDiv {
max-width: 600px;
max-height: 400px;
}
<script src="https://cdn.jsdelivr.net/npm/chart.js#3.9.1/dist/chart.min.js"></script>
<html>
<body>
<div class="myChartDiv">
<canvas id="myChart" width="600" height="400"/>
</div>
</body>
</html>
the version of Chart JS is 3.7.0
I am looking for a way to make my chart's points look from this:
to something like this:
I found out that there is an option in this library where you can set the points to a certain shape. e.x: pointStyle: 'rectRot' will make the points appearance look like this:
Is there an option or a way to achieve what Im looking for? (Check the second picture).
Thanks in advance!
My chart's javascript:
const data = {
datasets: [
{
backgroundColor: 'black',
borderColor: '#2d84b4',
borderWidth: 2,
data: [
{ x: 'Dec 27', y: 0.204 },
{ x: '01:00', y: 0.234 },
{ x: '02:00', y: 0.274 },
{ x: '03:00', y: 0.234 },
{ x: '04:00', y: 0.304 },
{ x: 'Dec 28', y: 0.506 },
],
fill: false,
pointBorderColor: 'rgba(0, 0, 0, 0)',
pointBackgroundColor: 'rgba(0, 0, 0, 0)',
pointHoverBackgroundColor: '#2d84b4',
pointHoverBorderColor: '#2d84b4',
},
],
};
const config = {
type: 'line',
data: data,
options: {
animation: {
duration: 0,
},
responsive: true,
maintainAspectRatio: false,
plugins: {
//Do not display legend.
legend: {
display: false,
},
},
scales: {
xAxes: {
stacked: true,
ticks: {
stepSize: 2,
},
grid: {
display: true,
drawBorder: false,
drawOnChartArea: false,
drawTicks: true,
tickLength: 4,
type: 'time',
},
},
yAxes: {
grid: {
drawBorder: false,
drawTicks: false,
},
},
},
elements: {
point: {
radius: 5,
},
},
},
};
// Initialize the Chart.
const myChart = new Chart(document.getElementById('myChart'), config);
window.addEventListener('beforeprint', () => {
myChart.resize(600, 600);
});
window.addEventListener('afterprint', () => {
myChart.resize();
});
//Disable all animations!
myChart.options.animation = false;
myChart.options.animations.colors = false;
myChart.options.animations.x = false;
myChart.options.transitions.active.animation.duration = 0;
The points seemed to work just fine with your transparent background, only on hover you setted a normal background again so the pointHoverBackgroundColor should also be transparent.
To make the point bigger on hover you can use the hoverRadius and to make the line have the same width you can use the pointHoverBorderWidth:
var options = {
type: 'line',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: 'black',
borderColor: '#2d84b4',
borderWidth: 2,
pointBackgroundColor: 'rgba(0, 0, 0, 0)',
pointHoverBackgroundColor: 'rgba(0, 0, 0, 0)',
pointHoverBorderColor: '#2d84b4',
hoverRadius: 10,
pointHoverBorderWidth: 2
}]
},
options: {}
}
var ctx = document.getElementById('chartJSContainer').getContext('2d');
new Chart(ctx, options);
<body>
<canvas id="chartJSContainer" width="600" height="400"></canvas>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.0/chart.js"></script>
</body>
I'm new to chart.js, and I have a question about making x-axis labels position to the top.
This is the result that I expected: x-axis labels are on the top.
And this is my attempt:
const ctx = document.getElementById('weather_chart');
const myChart = new Chart(ctx, {
data: {
datasets: [{
type: 'bar',
label: 'rainfall probability',
data: [10, 20, 30, 40],
}, {
type: 'line',
label: 'temperature',
data: [50, 50, 50, 50],
borderColor: '#EB6E4B',
backgroundColor: '#EB6E4B',
}],
labels: ['now', '9am', '10am', '11am', '12pm'],
},
options: {
plugins: {
legend: {
display: false,
},
}
}
});
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<div id="chart">
<canvas id="weather_chart"></canvas>
</div>
If it is possible, would you take your time to write the answer?
Thanks in advance, and if my question is insufficient, I would appreciate it if you could tell me.
You can configure all scale related things like position in this namepsaces: options.scales[scaleId]. For more config options of the scales you can read the documentation: https://www.chartjs.org/docs/master/axes/
const ctx = document.getElementById('weather_chart');
const myChart = new Chart(ctx, {
data: {
datasets: [{
type: 'bar',
label: 'rainfall probability',
data: [10, 20, 30, 40],
}, {
type: 'line',
label: 'temperature',
data: [50, 50, 50, 50],
borderColor: '#EB6E4B',
backgroundColor: '#EB6E4B',
}],
labels: ['now', '9am', '10am', '11am', '12pm'],
},
options: {
scales: {
x: {
position: 'top'
}
},
plugins: {
legend: {
display: false,
},
}
}
});
<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
<div id="chart">
<canvas id="weather_chart"></canvas>
</div>
inside options > scales > xAxes the xAxes is an array, so we can define multiple axis and there configuration like this:
options:{
scales: {
xAxes: [
{
position: 'top',
ticks: {
maxRotation: 90,
minRotation: 80
}
}
]
}
}
Checkout the example here
https://codepen.io/ganeshbkdm/pen/oNeaOwm
I need to show the values on the top of bars using chartjs-node-canvas to create a PDF in Node
I have been able to recreate what I am looking in HTML but the plugin has the limitation of not accepting the "animation" property, for this reason I am looking to know if there is another way to do it in Node without the need for another external plugin. This is my current code
var ctx = document.getElementById("myChart");
var chart = new Chart(ctx, {
type: "bar",
data: {
labels: ["a", "b", "c", "d", "e", "f"],
datasets: [
{
type: "bar",
backgroundColor: "blue",
borderColor: "blue",
borderWidth: 1,
label: "promedio",
order: 1,
data: [60, 49, 72, 90, 100, 60]
},
{
type: "bar",
backgroundColor: "orange",
borderColor: "orange",
borderWidth: 1,
label: "promedio",
order: 1,
data: [40, 5, 20, 30, 10, 6]
},
{
type: "line",
label: "casos",
data: [25, 13, 30, 35, 25, 40],
lineTension: 0,
backgroundColor: "red",
borderColor: "red",
order: 0,
fill: false
}
]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
},
animation: {
duration: 1,
onComplete: function () {
var chartInstance = this.chart,
ctx = chartInstance.ctx;
ctx.font = Chart.helpers.fontString(16, 20, Chart.defaults.global.defaultFontFamily);
ctx.textAlign = 'center';
ctx.textBaseline = 'bottom';
this.data.datasets.forEach(function (dataset, i) {
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 - 2);
});
});
}
},
legend: {
display: false
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
<body>
<canvas id="myChart" width="400" height="200"></canvas>
</body>
Short answer is no, you either have to implement your own external inline plugin or use the datalabels plugin (https://chartjs-plugin-datalabels.netlify.app/samples/charts/bar.html) since there is no build in way to achieve this
I can't figure out for the life of me why when I add a funnel chart to my chartjs charts all of the charts become compressed distorted upon loading. Whenever I resize the page the charts snap back to how I would expect them to load. Thanks for the help.
https://jsfiddle.net/nmp0tfh1/1/
require.config({
paths: {
chart: "//cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.2/Chart.min",
datalabels: "//cdn.jsdelivr.net/npm/chartjs-plugin-datalabels#0.3.0/dist/chartjs-plugin-datalabels.min",
gauge: "//unpkg.com/chartjs-gauge#0.2.0/dist/chartjs-gauge.min",
funnel: "//cdn.jsdelivr.net/npm/chartjs-funnel#1.0.5/dist/chart.funnel.min"
},
map: {
datalabels: {
"chart.js": "chart"
},
gauge: {
"chart.js": "chart"
},
funnel: {
"chart.js": "chart"
},
}
});
require(["chart", "datalabels", "gauge", "funnel"], function(chart) {
var ctx = document.getElementById("chart").getContext('2d');
var chrt = new chart.Chart(ctx, {
type: 'gauge',
data: {
labels: ['Red', 'Yellow', 'Green'],
datasets: [{
data: [25, 50, 75],
value: 55,
backgroundColor: ['red', 'yellow', 'green'],
borderWidth: 2
}]
},
options: {
responsive: true,
title: {
display: true,
text: 'Gauge chart with datalabels plugin displaying labels'
},
layout: {
padding: {
bottom: 30
}
},
needle: {
// Needle circle radius as the percentage of the chart area width
radiusPercentage: 2,
// Needle width as the percentage of the chart area width
widthPercentage: 3.2,
// Needle length as the percentage of the interval between inner radius (0%) and outer radius (100%) of the arc
lengthPercentage: 80,
// The color of the needle
color: 'rgba(0, 0, 0, 1)'
},
valueLabel: {
display: false
},
plugins: {
datalabels: {
display: true,
formatter: function(value, context) {
return context.chart.data.labels[context.dataIndex];
},
//color: function (context) {
// return context.dataset.backgroundColor;
//},
color: 'rgba(0, 0, 0, 1.0)',
//color: 'rgba(255, 255, 255, 1.0)',
backgroundColor: null,
font: {
size: 20,
weight: 'bold'
}
}
}
}
});
var ctx = document.getElementById("chart1").getContext('2d');
var chrt = new chart.Chart(ctx, {
type: 'pie',
data: {
datasets: [{
data: [30, 60, 90],
backgroundColor: [
"#FF6384",
"#36A2EB",
"#FFCE56"
],
hoverBackgroundColor: [
"#FF6384",
"#36A2EB",
"#FFCE56"
]
}],
labels: [
"Red",
"Blue",
"Yellow"
],
},
options: {
responsive: true,
title: {
display: true,
text: "chart title"
},
},
});
var ctx = document.getElementById("chart2").getContext('2d');
var chrt = new chart.Chart(ctx, {
type: 'funnel',
data: {
datasets: [{
data: [30, 60, 90],
backgroundColor: [
"#FF6384",
"#36A2EB",
"#FFCE56"
],
hoverBackgroundColor: [
"#FF6384",
"#36A2EB",
"#FFCE56"
]
}],
labels: [
"Red",
"Blue",
"Yellow"
],
},
options: {
responsive: true,
title: {
display: true,
text: "chart title"
},
},
});
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.5/require.js"></script>
<canvas id="chart" width="400" height="400"></canvas>
<canvas id="chart1" width="400" height="400"></canvas>
<canvas id="chart2" width="400" height="400"></canvas>
before resize
after resize
The datalabels plugin fails on your funnel chart because it cant find an x axis and cant fix it since it doesnt understand the chart since its a custom chart. If you set display to false in the options for your funnel chart it will work.
options: {
responsive: true,
title: {
display: true,
text: "chart title"
},
plugins: {datalabels: {display: false}}
},
Live example: https://codepen.io/leelenaleee/pen/JjbNLpQ