I use Angular-Chart.js (the AngularJS Chart.js version) to create a bar chart. The Chart is working with the options except for the colours.
Even if I set them it is indicated in the documentation , they stay grey.
<div class="graph-display" ng-controller="chartController">
<canvas class="chart chart-bar"
data="bilans.data"
labels="bilans.labels"
series="bilans.series"
options="{
scaleShowHorizontalLines: true,
scaleShowVerticalLines: false,
tooltipTemplate: '<%= value %> $',
responsive: true
}"
colours="{
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}"
></canvas>
</div>
Actually, the options are working but the colours are not. Am I doing something wrong?
Your should declare colours
object as an array
"colours": [{
fillColor: 'rgba(47, 132, 71, 0.8)',
strokeColor: 'rgba(47, 132, 71, 0.8)',
highlightFill: 'rgba(47, 132, 71, 0.8)',
highlightStroke: 'rgba(47, 132, 71, 0.8)'
}];
For more info refer this post / this too.
For newer versions, see eli0tt's answer , as the parameter names have changed.
I was having the same difficulty. In the docs it says to use "colors" however once I updated my html to:
chart-colours
with an angular array of:
$scope.colours = ['#72C02C', '#3498DB', '#717984', '#F1C40F'];
It worked!
As @pankajparkar said. Just adding that you can also pass html colours and angular-chart.js will define the colour objects properly in rgba with the proper nuances eg $scope.colors = ['#FD1F5E','#1EF9A1','#7FFD1F','#68F000'];
It seems that naming changed again. I'm using angular-chart.js 1.0.3 and color management for bar charts works like this :
colors:[{
backgroundColor:"#F00",
hoverBackgroundColor:"#FF0",
borderColor:"#0F0",
hoverBorderColor:"#00F"
}];
In the canvas tag, the name of the attribute is chart-colors
As at 2017 I got angular-charts to work with the following code.
that the names of the elements are changed. Taken from the angular-chart source code.
also that as soon as you run out of colours angular-chart will generate them for you. This includes an opacity of 0.2 for background colours.
If you specify #hex colours opacity will be added.
Colour specification via global.
app.config(['ChartJsProvider', function (ChartJsProvider) {
// Using ChartJsProvider.setOptions('bar', { didn't seem to work for me.
// Nor did $scope.chartColors. Although I only tried that in the controller.
Chart.defaults.global.colors = [
{
backgroundColor: 'rgba(78, 180, 189, 1)',
pointBackgroundColor: 'rgba(78, 180, 189, 1)',
pointHoverBackgroundColor: 'rgba(151,187,205,1)',
borderColor: 'rgba(0,0,0,0',
pointBorderColor: '#fff',
pointHoverBorderColor: 'rgba(151,187,205,1)'
}, {
backgroundColor: 'rgba(229, 229, 229, 1)',
pointBackgroundColor: 'rgba(229, 229, 229, 1)',
pointHoverBackgroundColor: 'rgba(151,187,205,1)',
borderColor: 'rgba(0,0,0,0',
pointBorderColor: '#fff',
pointHoverBorderColor: 'rgba(151,187,205,1)'
}
...
In the source code the colour picking code is currently. Colours set via Chart.js options are reset here (I didn't get this to work).
Pick colours as per angular-chart.js source code:
var colors = angular.copy(scope.chartColors ||
ChartJs.getOptions(type).chartColors ||
Chart.defaults.global.colors
Yes, if you don't specify an object, opacity is set for you. From angular-chart.js:
function convertColor (color) {
if (typeof color === 'object' && color !== null) return color;
if (typeof color === 'string' && color[0] === '#') return getColor(hexToRgb(color.substr(1)));
return getRandomColor();
}
...
function getColor (color) {
return {
backgroundColor: rgba(color, 0.2),
pointBackgroundColor: rgba(color, 1),
pointHoverBackgroundColor: rgba(color, 0.8),
borderColor: rgba(color, 1),
pointBorderColor: '#fff',
pointHoverBorderColor: rgba(color, 1)
};
}
You wanted to say: "colours"
$scope.colours = ['#FD1F5E','#1EF9A1','#7FFD1F','#68F000'];
Also we can see the other attributes That we can change , like : legend , series, hover . Next to each chart you can see an option called "settings ", that's all what you can change.
With the latest version $scope.colors does not seem to work. You need to use chart-dataset-override="colors"
DEMO
angular.module("app", ["chart.js"]).controller("DoughnutCtrl", function ($scope) { $scope.results = {'1': 0, '2': 0, '3': 0, '4': 0, '5': 0, '6': 0, '7': 0, '8': 0, '9': 0, '10': 0}; $scope.labels = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '10']; $scope.data = [ [1, 3, 5, 8, 9, 10, 11, 12, 33, 5] ]; $scope.colors = [{ fillColor: 'rgba(59, 89, 152,0.2)', strokeColor: 'rgba(59, 89, 152,1)', pointColor: 'rgba(59, 89, 152,1)', pointStrokeColor: '#fff', pointHighlightFill: '#fff', pointHighlightStroke: 'rgba(59, 89, 152,0.8)' }]; });
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <title>Multi Slot Transclude</title> <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.0-rc.0/angular.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.3.0/Chart.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular-chart.js/1.0.3/angular-chart.min.js"></script> </head> <body ng-app="app" ng-controller="DoughnutCtrl"> <canvas class="chart chart-bar" chart-data="data" chart-labels="labels" chart-dataset-override="colors"> </canvas> </body> </html>
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