Title
Can a line chart be segmented?
Description
In vchart, is it possible to segment a line chart if there is a point that you do not want to display?
Solution
If a point's value is invalid, VChart will automatically hide that point. You can set the value of that point to null in the data to achieve the same effect.
For example, the point corresponding to 10:00 will not be displayed if its value is set to null.
data: {
values: [
{
time: '2:00',
value: 8
},
{
time: '4:00',
value: 9
},
{
time: '6:00',
value: 11
},
{
time: '8:00',
value: 14
},
{
time: '10:00',
value: null
},
{
time: '12:00',
value: 17
},
{
time: '14:00',
value: 17
},
{
time: '16:00',
value: 16
},
{
time: '18:00',
value: 15
}
]
}
Code Example
const spec = {
type: 'line',
data: {
values: [
{
time: '2:00',
value: 8
},
{
time: '4:00',
value: 9
},
{
time: '6:00',
value: 11
},
{
time: '8:00',
value: 14
},
{
time: '10:00',
value: null
},
{
time: '12:00',
value: 17
},
{
time: '14:00',
value: 17
},
{
time: '16:00',
value: 16
},
{
time: '18:00',
value: 15
}
]
},
xField: 'time',
yField: 'value'
};
const vchart = new VChart(spec, { dom: CONTAINER_ID });
vchart.renderSync();
// Just for the convenience of console debugging, DO NOT COPY!
window['vchart'] = vchart;
Result
After running the code, the point corresponding to 10:00 will not be displayed, and the line chart will be segmented.
Online demo: https://codesandbox.io/p/sandbox/line-point-split-fq7wkh?file=%2Fsrc%2Findex.ts%3A49%2C2
Related Documents
VChart official website: https://visactor.io/vchart/
VChart GitHub: GitHub - VisActor/VChart: VChart, more than just a cross-platform charting library, but also an expressive data storyteller.
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