loading extjs bar chart sample into a div tag
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20-12-2019 - |
Question
Just a newbie here trying to understand and work on extjs 4.2.1. I really like the charts and grids and wanted to incorporate them into my current application. I got the sample grid to work in my application but the chart turns out to be a little harder. I used the sample code at
which renders the chart in another window and was wondering if someone can help me put this into a div tag on one of my panels.
Here is the container I have for the chart:
<div data-dojo-type="dijit.layout.ContentPane" data-dojo-props="splitter:false">
<div id="container"></div>
</div>
and the chart script: charts.js
Ext.require('Ext.chart.*');
Ext.require(['Ext.Window', 'Ext.fx.target.Sprite', 'Ext.layout.container.Fit']);
Ext.onReady(function () { var textArea;
var store = new Ext.data.JsonStore({
fields: ['name', 'visits', 'views'],
data: [
{ name: 'Jul 07', visits: 245000, views: 3000000 },
{ name: 'Aug 07', visits: 240000, views: 3500000 },
{ name: 'Sep 07', visits: 355000, views: 4000000 },
{ name: 'Oct 07', visits: 375000, views: 4200000 },
{ name: 'Nov 07', visits: 490000, views: 4500000 },
{ name: 'Dec 07', visits: 495000, views: 5800000 },
{ name: 'Jan 08', visits: 520000, views: 6000000 },
{ name: 'Feb 08', visits: 620000, views: 7500000 }
]
});
Ext.define('Ext.chart.theme.CustomBlue', { extend: 'Ext.chart.theme.Base',
constructor: function (config) {
var titleLabel = {
font: 'bold 18px Arial'
}, axisLabel = {
fill: 'rgb(8,69,148)',
font: '12px Arial',
spacing: 2,
padding: 5
};
this.callParent([Ext.apply({
axis: {
stroke: '#084594'
},
axisLabelLeft: axisLabel,
axisLabelBottom: axisLabel,
axisTitleLeft: titleLabel,
axisTitleBottom: titleLabel
}, config)]);
}
});
var chart = Ext.create('Ext.chart.Chart', {
animate: true,
shadow: true,
store: store,
axes: [{
type: 'Numeric',
position: 'bottom',
fields: ['data1'],
label: {
renderer: Ext.util.Format.numberRenderer('0,0')
},
title: 'Number of Hits',
grid: true,
minimum: 0
}, {
type: 'Category',
position: 'left',
fields: ['name'],
title: 'Month of the Year'
}],
theme: 'CustomBlue',
background: {
gradient: {
id: 'backgroundGradient',
angle: 45,
stops: {
0: {
color: '#ffffff'
},
100: {
color: '#eaf1f8'
}
}
}
},
series: [{
type: 'bar',
axis: 'bottom',
highlight: true,
tips: {
trackMouse: true,
width: 140,
height: 28,
renderer: function (storeItem, item) {
this.setTitle(storeItem.get('name') + ': ' + storeItem.get('data1') + ' views');
}
},
label: {
display: 'insideEnd',
field: 'data1',
renderer: Ext.util.Format.numberRenderer('0'),
orientation: 'horizontal',
color: '#333',
'text-anchor': 'middle'
},
xField: 'name',
yField: ['data1']
}]
renderTo: "container"
});
});
Solution
You didn't explain what the problem was, however it's pretty clear from looking at the code.
The issue is that you need to give the chart a width/height, because it needs those to size appropriately. In the original example in the docs, the dimensions are provided explicitly by the fit
layout used on the window.