antvis/G2

The issue has been closed
sample transform 实现问题 #4505
visiky posted onGitHub
问题描述
在这个 case 中,想实现对 point 的抽样,发现 sample 之后,point 和 line 对应不上了
<img width="400" alt="image" src="https://user-images.githubusercontent.com/15646325/208904082-11ac9a5c-4de3-49bb-a6be-1e9810dddd6e.png">
期望
.transform({
type: 'sample',
y: 'min',
})
group 之后取 y 值最小的点保留下来,x 坐标应该保持不变,效果如下:
抽样前 | 抽样后 |
---|---|
<img width="688" alt="image" src="https://user-images.githubusercontent.com/15646325/208903073-d5e0e90e-f8a1-4162-bb73-5ec2c7ec3141.png"> | <img width="691" alt="image" src="https://user-images.githubusercontent.com/15646325/208903002-a3f950f5-78a5-4e84-b30d-cd57eebbb59b.png"> |