100pah opened a new pull request, #21191:
URL: https://github.com/apache/echarts/pull/21191
## Brief Information
This pull request is in the type of:
- [ ] bug fixing
- [x] new feature
- [ ] others
### What does this PR do?
A tiny update:
Support matrix.x/y.length for conveniently create a headless matrix without
composing an array.
Before:
```js
matrix: {
x: {data: Array(5).fill(null)},
y: {data: Array(3).fill(null)},
}
```
After:
```js
// Support this way, more straightforward.
matrix: {
x: {length: 5},
y: {length: 3},
}
```
## Document Info
One of the following should be checked.
- [ ] This PR doesn't relate to document changes
- [x] The document should be updated later
- [ ] The document changes have been made in apache/echarts-doc#xxx
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