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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2020/04/17 02:53:44 UTC

[GitHub] [incubator-echarts] LongLiveSocialism opened a new issue #12450: heatmap item wrongly rendered to trip when axis type is 'time'

LongLiveSocialism opened a new issue #12450: heatmap item wrongly rendered to trip when axis type is 'time'
URL: https://github.com/apache/incubator-echarts/issues/12450

### Version
4.6.0

### Steps to reproduce
1. open heatmap official examples : https://echarts.apache.org/examples/zh/editor.html?c=heatmap-large
2. set xAxis type to time
3. set corresponding data to timestamp such as follows:
origin: data.push([i, j, noise.perlin2(i / 40, j / 20) 0.5]);
timestamp version: data.push([new Date(i*1000), j, noise.perlin2(i / 40, j / 20) 0.5]);

Then heatmap is wrongly rendered to strip when timestamps are not continuous timestamp numbers.

### What is expected?
The heatmap item should be correctly rendered to proper rect to fill the picture

### What is actually happening?
Then heatmap item is wrongly rendered to strip when timestamps are not continuous timestamp numbers.

---
I found it when I need to draw a heatmap with one time axis

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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #12450: heatmap item wrongly rendered to trip when axis type is 'time'

Posted by GitBox <gi...@apache.org>.

echarts-bot[bot] commented on issue #12450: heatmap item wrongly rendered to trip when axis type is 'time'
URL: https://github.com/apache/incubator-echarts/issues/12450#issuecomment-615009545

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[GitHub] [incubator-echarts] quillblue commented on issue #12450: heatmap item wrongly rendered to strip when axis type is 'time'

Posted by GitBox <gi...@apache.org>.

quillblue commented on issue #12450:
URL: https://github.com/apache/incubator-echarts/issues/12450#issuecomment-622364071


   @LongLiveSocialism 
   It seems that currently heatmap will not support contiounus axis such as 'time', since intermediate value could not be determined without additional information. (for example, with value in 8:00 and in 9:00 provided we can not determine value in 8:30).
   If using value in one moment could represent value in a period of time in your case, you can set axis type as 'category' and use axis label to represent time like example in https://www.echartsjs.com/examples/en/editor.html?c=heatmap-cartesian


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