I have the following code to contruct a pie chart.
The problem is i don't get a shadow.
Note : If the chart config, theme='Base', then the pie has a shadow
Ext.define('ChartPanel', {
extend: 'Ext.panel.Panel',
//------------------CONSTRUCTOR
, constructor: function(externalConfigs) {
externalConfigs = externalConfigs || {};
var configs = {
title: 'My panel',
items: [
{
xtype: 'chart',
store: myStore,
width: '30%',
series: [{
type: 'pie'
, field: 'persentage'
, shadow: 'sides'
, showInLegend: false
, donut: false
, renderer: function(sprite, record, attributes, index, store) {
if (record.data.description == 'option1') {
sprite.setAttributes({
fill: 'url(#redGradient)',
stroke: '#ffffff'
}, false);
} else if (record.data.description == 'option2') {
sprite.setAttributes({
fill: 'url(#greenGradient)',
stroke: '#ffffff'
}, false);
}
}
}]
, gradients: [{
id: 'redGradient',
angle: 45,
stops: {
0: { color: '#820000' },
100: { color: '#BD1E00' }
}
}, {
id: 'greenGradient',
angle: 0,
stops: {
0: { color: '#89AC10' },
100: { color: '#A1C22D' }
}
}]
}
]
}
Ext.apply(configs, externalConfigs);
this.callParent([configs]); //Call the parent constructor
}
});
Any ideas how to get a shadow?
Thanks
Use shadow: true (see the docs in the previous link to see other possible options) within your chart definition. (Not within the pie definition). There is no shadow config property for Ext.chart.series.Pie. You would need to use shadowAttributes within Ext.chart.series.Pie.
I found that
return attributes;
inside the renderer is essential.
Related
I created a chart with two y-axis and one x-axis and struggle to create tooltips with intersect = false, so it will start the tooltip when hovering over the line and not only the point of the chart
However, the whole settings for the tooltip, described on
https://www.chartjs.org/docs/latest/configuration/tooltip.html
Does not seem to have any effect for me. My code see below
I am using this code inside a NodeRed template node
\<canvas id="myChart" width=912 height =370\>\</canvas\>
\<script\>
var textcolor = getComputedStyle(document.documentElement).getPropertyValue('--nr-dashboard-widgetTextColor');
var gridcolor = '#E6E6E6';
var linecolors = \['#333F50','#B55A11', '#90C050'\]
var backgroundColor = \['#999FA7','#DAAC88', '#C7DFA7'\]
var ctx = document.getElementById('myChart').getContext('2d');
var chart = new Chart(ctx, {
// The type of chart we want to create
type: 'line',
// The data for our dataset
data: {
labels: {{{payload.labels}}},
datasets: [
{
label: 'Folie Länge Ist',
backgroundColor: backgroundColor[0],
borderColor: linecolors[0],
data: {{{payload.eins}}},
yAxisID: 'left-y-axis',
},
{
label: 'Folie Länge Soll',
backgroundColor: backgroundColor[1],
borderColor: linecolors[1],
data: {{{payload.zwei}}},
yAxisID: 'left-y-axis',
},
{
label: 'Aufwickler Durchmesser',
backgroundColor: backgroundColor[2],
borderColor: linecolors[2],
data: {{{payload.drei}}},
yAxisID: 'right-y-axis',
}
]
},
// Configuration options
options: {
animation: false,
legend: {
display: true,
position: "top"
},
elements: {
point: {
pointStyle: 'circle',
radius: 0
},
line: {
tension: 0,
fill: false
}
},
plugins: {
tooltip: {
mode: 'index',
intersect: false
}
},
scales: {
yAxes: [
{
gridLines :{display:false},
id: 'left-y-axis',
type: 'linear',
position: 'left',
ticks: {
fontColor: linecolors[0],
callback: function(value, index, ticks) {
return new Intl.NumberFormat('de-DE').format(value);
}
}
},
{
gridLines :{zeroLineColor:gridcolor,color:gridcolor,lineWidth:1},
id: 'right-y-axis',
type: 'linear',
position: 'right',
ticks: {
fontColor:linecolors[2],
callback: function(value, index, ticks) {
return new Intl.NumberFormat('de-DE').format(value);
}
}
}
],
xAxes: [
{
ticks: {
autoSkip: true,
autoSkipPadding: 10,
maxRotation: 0,
minRotation: 0
}
}
]
}
}
});
\</script\>
Tried setting intersect = false, also enable = false just to test if these settings have an effect
I have doughnut chart using chartsjs, and also I used multi layer with cutoutPercentage.
The First Layer (Black color) is the Total and the second layer (Red Color) complete is the running value.
type: 'doughnut',
data: {
datasets: [
{
data: Total,
fill: true,
backgroundColor:'rbg(242, 133, 0)',
borderWidth: 3,
weight:1,
},{
data: complete,
fill: true,
backgroundColor:'rgb(255,36,0)',
borderWidth: 3,
weight:1,
}
]
},
options: {
responsive: true,
rotation: 1 * Math.PI,
circumference: 1 * Math.PI,
legend: {
display: false
},
tooltip: {
enabled: false
},
cutoutPercentage: 70,
},
This is what I need,2nd layer is running until reach the total.
In case you need a generic solution, you can use the Plugin Core API and define a beforeInit hook that modifies the chart configuration to fit your needs.
Please take a look at below runnable code and see how it could be done.
new Chart('runningValue', {
type: 'doughnut',
plugins: [{
beforeInit: chart => {
chart.data.datasets = [{
data: [chart.data.total],
backgroundColor: chart.data.totalColor,
borderWidth: 3
},
{
data: [chart.data.complete, chart.data.total - chart.data.complete],
backgroundColor: [chart.data.completeColor, '#fff'],
borderWidth: 3
}
]
}
}],
data: {
total: 50,
complete: 35,
totalColor: 'rbg(242, 133, 0)',
completeColor: 'rgb(255,36,0)'
},
options: {
rotation: -90,
circumference: 180,
plugins: {
legend: {
display: false
},
tooltip: {
enabled: false
}
},
cutout: '70%'
}
});
canvas {
max-height: 100px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.1/chart.js"></script>
<canvas id="runningValue"></canvas>
Simply define two values and two background colors on the second dataset as shown in the runnable code below.
const total = 50;
const complete = 35;
new Chart('runningValue', {
type: 'doughnut',
data: {
datasets: [{
data: [total],
backgroundColor: 'rbg(242, 133, 0)',
borderWidth: 3
},
{
data: [complete, total - complete],
backgroundColor: ['rgb(255,36,0)', '#fff'],
borderWidth: 3
}
]
},
options: {
rotation: -90,
circumference: 180,
plugins: {
legend: {
display: false
},
tooltip: {
enabled: false
}
},
cutout: '70%'
}
});
canvas {
max-height: 100px;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.7.1/chart.js"></script>
<canvas id="runningValue"></canvas>
Can someone explain to me how to toggle from light to dark theme without reloading the page??
I have this code that checks if the theme is light or dark and I want to change the theme dynamically base on the theme.
my code so far
initECharts(days: any, hours: any, data: any) {
if (this._chart) {
this._chart.clear();
this._chart = null;
}
// console.log('days: ', this.days);
// console.log('hours: ', this.hours);
// console.log('values: ', this.values);
data = this.reconstructData(days, hours, data);
// const x: any = document.getElementById('main');
const theme = (this._themeService.theme === 'dark') ? 'dark' : 'light';
console.log('theme', theme);
const domEl: any = this.main.nativeElement;
this._chart = echarts.init(domEl, theme);
// specify chart configuration item and data
const option: any = {
tooltip: {
position: 'top'
},
animation: false,
grid: {
height: '50%',
y: '10%'
},
xAxis: {
type: 'category',
data: hours,
splitArea: {
show: true
},
nameTextStyle: {
color: 'red'
}
},
yAxis: {
type: 'category',
data: days,
splitArea: {
show: true
}
},
visualMap: {
min: 0,
max: 10,
calculable: true,
orient: 'horizontal',
left: 'center',
bottom: '15%'
},
series: [{
name: 'Punch Card',
type: 'heatmap',
data: data,
label: {
normal: {
show: true
}
},
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}]
};
// use configuration item and data specified to show chart
this._chart.setOption(option);
}
Ok, I found it.
every time you want to update the theme dynamically example a button or an observable or Promise, you must call this method
echarts.dispose(this._chart);
then you call the initMethod, example:
this.initECharts();
The init method can look like this in my case.
initECharts(days: any, hours: any, data: any) {
data = this.reconstructData(days, hours, data);
// const x: any = document.getElementById('main');
const theme = (this._themeService.theme === 'dark') ? 'dark' : 'light';
console.log('theme', theme);
const domEl: any = this.main.nativeElement;
this._chart = echarts.init(domEl, theme);
// specify chart configuration item and data
const option: any = {
tooltip: {
position: 'top'
},
animation: false,
grid: {
height: '50%',
y: '10%'
},
xAxis: {
type: 'category',
data: hours,
splitArea: {
show: true
},
nameTextStyle: {
color: 'red'
}
},
yAxis: {
type: 'category',
data: days,
splitArea: {
show: true
}
},
visualMap: {
min: 0,
max: 10,
calculable: true,
orient: 'horizontal',
left: 'center',
bottom: '15%'
},
series: [{
name: 'Punch Card',
type: 'heatmap',
data: data,
label: {
normal: {
show: true
}
},
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}]
};
// use configuration item and data specified to show chart
this._chart.setOption(option);
}
I´m trying create a chart with a normal decimal scale on the left and a logarithmic scale on the right side.
the sample shows approximately my result, the only thing missing is that on the scale on the right side I need to present the value of 1000Hz at the exact middle point. (360 line)
function createTympaniHzChart() {
$("#chart5").kendoChart({
title: {
text: "..."
},
series: [{
colorField: "valueColor",
overlay: { gradient: "none" },
border: {
width: 0,
color: ""
},
data: [
{ value: 720, valueColor: "#C60C30" },
{ value: 355, valueColor: "#FFBE25" },
{ value: 340, valueColor: "#2EA1FF" }
]
}],
tooltip: {
visible: true,
format: "{0:0}",
template: "#= value #°"
},
categoryAxis: {
title: {
text: "Lorem Ipsum",
color: "#4D4D4D"
},
majorGridLines: {
visible: false
},
categories: ["A...", "B...", "C..."],
line: {
visible: false
},
axisCrossingValues: [0, 10]
},
valueAxis: [{
title: {
text: "° Insertion Depth",
color: "#4D4D4D"
},
max: 720,
majorUnit: 180,
line: {
visible: false
},
labels: {
format: "{0}°",
position: "start"
}
},
{
title: {
text: "° Pitch (Hz)",
color: "#4D4D4D"
},
max: 10000,
min: 100,
majorUnit:9900,
reverse: true,
line: {
visible: false
},
labels: {
format: "{0}Hz",
position: "end"
}
}
]
});
}
Is there any other way to add this value?
I manage t solve the issue with a custom function for the data and adding type: "log" property to the valueAxis.
Add this to the valueAxis:
data: fibonacciSequence()
The function:
function fibonacciSequence() {
for (i = 100; i <= 10000; i = i * 10) {
var fibAxisValues = [];
fibAxisValues.push(i);
}
return fibAxisValues;
}
I'm working on a donut chart type, with the Highcharts library.
As you can see in the image below, some of the inner data labels are overlapped.
I've been playing with the parameter "distance" but doesn't fix this.
Find attached the code below,
// Create the chart
$(container).highcharts({
chart: {
type: 'pie'
},
credits: {
enabled: false
},
exporting: {
buttons: {
contextButton: {
symbol: 'url(/icon-turn-down.png)'
}
}
},
title: {
text: _title,
margin: 50
},
plotOptions: {
pie: {
shadow: false,
center: ['50%', '50%']
}
},
tooltip: {
formatter: function() {
var s = this.point.name.split('.');
if (s.length == 1) {
return this.y > 1? '<b>'+this.point.name+':</b> '+Highcharts.numberFormat(this.point.y) : null;
}
return this.y > 1? s[0]+'<br /><b>'+$.trim(s[1])+':</b> '+Highcharts.numberFormat(this.point.y) : null;
}
},
series: [{
name: '',
data: innerData,
size: '80%',
dataLabels: {
formatter: function() {
return this.y > 0 ? this.point.name : null;
},
color: 'white',
distance: -50
}
}, {
name: '',
data: outerData,
size: '100%',
innerSize: '80%',
dataLabels: {
formatter: function() {
var s = this.point.name.split('.');
if (s.length == 1) {
return this.y > 1 ? '<b>'+ this.point.name+':</b> '+ Highcharts.numberFormat(this.point.y) : null ;
}
s = this.point.name.substring(this.point.name.indexOf(".")+2);
return this.y > 1 ? '<b>'+ s+':</b> '+ Highcharts.numberFormat(this.point.y): null;
},
style: {
fontSize: "10px",
fontColor: "#000000"
}
}
}]
});
Finally, I found a solution, which is playing with the "startangle" attribute.
series: [{
name: '',
data: innerData,
startAngle:110,
size: '80%',
dataLabels: {
formatter: function() {
return this.y > 0 ? this.point.name : null;
},
color: 'white',
distance: -45
}, {
...
Distance parameter cannot be applied for each point, only general, so only what comes to my mind is iteared on each datalabel and use translate() function, or use formatter, apply CSS class and dhten use top/left parameter for each element. But will be helpful if you recreate your example as fiddle.