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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2020/05/08 22:48:25 UTC
[GitHub] [incubator-echarts] tomsoftware opened a new issue #12592: Drawing Envelopes in Line Charts
tomsoftware opened a new issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592
### What problem does this feature solve?
I do want to mark the area in between two lines in a line-chart
The "confidence-band" is quiet a hack cause it shifts all data up over 0 and fakes all lables and ticks
https://echarts.apache.org/examples/en/editor.html?c=confidence-band
Is there a other way to set two series and mark the area in between
### What does the proposed API look like?
Chart.js uses a "fill" property to set the relative-index of the dataset to fill to
https://www.chartjs.org/docs/latest/charts/area.html
https://stackoverflow.com/questions/37866992/filling-area-between-two-lines-chart-js-v2
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[GitHub] [incubator-echarts] tomsoftware commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626402653
By the way: there is a bug in the "confidence-band" example:
Line 31:
``` return params[2].name + '<br />' + params[2].value; ```
should be
``` return params[2].name + '<br />' + (params[2].value - base) * 100; ```
to cover up the shifting-hack (the base value is 3)
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[GitHub] [incubator-echarts] Ovilia commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
Ovilia commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-631228716
I marked this to be a new feature but I don't think we plan to make this new feature recently. Because as I said, the suggested method to do so is to this as the demo does. It's not much a "hack" and it does complete the job without much bother.
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[GitHub] [incubator-echarts] tomsoftware edited a comment on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware edited a comment on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626173154
Hi Ovilia: The "confidence-band" example is quiet a hack cause it uses a "base" value to shifts all y-values to be larger then 0 and fakes all lables and ticks.This is quite an bad idea cause I want to dynamicly add new values... how should I do this? Always calculating and applying a new base? Also this makes the code quiet complicated.
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[GitHub] [incubator-echarts] tomsoftware edited a comment on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware edited a comment on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626173154
Hi Ovilia: The "confidence-band" example is quiet a hack cause it uses a "base" value to shifts all y-values to be larger then 0 and fakes all lables and ticks.This is quite a bed idee cause I want to dynamicly add new values... how should I do this? Always calculating and applying a new base? Also this makes the code quiet complicated.
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[GitHub] [incubator-echarts] tomsoftware commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-631182205
@Ovilia because of that, this issue was marked as "new-feature" and not a "support" question. May you could add the "support" label again? In my opinion this is a missing feature.
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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
echarts-bot[bot] commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626052279
Hi! We've received your issue and please be patient to get responded. 🎉
The average response time is expected to be within one day for weekdays.
In the meanwhile, please make sure that **you have posted enough image to demo your request**. You may also check out the [API](http://echarts.apache.org/api.html) and [chart option](http://echarts.apache.org/option.html) to get the answer.
If you don't get helped for a long time (over a week) or have an urgent question to ask, you may also send an email to dev@echarts.apache.org. Please attach the issue link if it's a technical questions.
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Have a nice day! 🍵
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[GitHub] [incubator-echarts] Ovilia commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
Ovilia commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626089924
https://echarts.apache.org/examples/en/editor.html?c=confidence-band is the recommended way to do this.
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[GitHub] [incubator-echarts] Ovilia commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
Ovilia commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626440373
@tomsoftware `base` value is used because ECharts handles stacking in the following logic: negative lines/bars stack with negative bars and positive with positive ones.
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[GitHub] [incubator-echarts] quillblue commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
quillblue commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626194746
Though agree with "confidence-band" is somehow a hack, I'm afraid I don't think putting `fill` property in line series is reasonable. Envelop should not belongs to line serires, but directly to the chart.
Maybe in further features of drawing area markers (using line series/axis as boundery) or drawing such kind of envelops via a new kind of chart extensions will be added, but currently confidence-band hack is the most recommend way to implement such kind of effects.
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[GitHub] [incubator-echarts] tomsoftware edited a comment on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware edited a comment on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-631182205
@Ovilia because of that, this issue was marked as "new-feature" and not a "support" question. May you could add the "new-feature" label again? In my opinion this is a missing feature.
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[GitHub] [incubator-echarts] creadone commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
creadone commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-651201240
I tried to make the similar visual with custom series. @tomsoftware, maybe you find something useful until desired feature not implemented official.
https://stackoverflow.com/questions/61724715/echarts-plot-the-variance-of-signals
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[GitHub] [incubator-echarts] tomsoftware commented on issue #12592: Drawing Envelopes in Line Charts
Posted by GitBox <gi...@apache.org>.
tomsoftware commented on issue #12592:
URL: https://github.com/apache/incubator-echarts/issues/12592#issuecomment-626173154
Hi Ovilia: The "confidence-band" example is quiet a hack cause it uses a "base" value to shifts all y-values to be larger then 0 and fakes all lables and ticks.This is quite a bed idee cause I want to dynamicly add new values... how should I do this? Always calculating applying a new base? Also this makes the code quiet complicated.
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