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imaNNeo / fl_chart

FL Chart is a highly customizable Flutter chart library that supports Line Chart, Bar Chart, Pie Chart, Scatter Chart, and Radar Chart.
https://flchart.dev
MIT License
6.73k stars 1.74k forks source link

Error Bar Support in Bar Charts #1483

Open kealist opened 10 months ago

kealist commented 10 months ago

Bar charts often have error bars that display standard error for the data. This is necessary for most scientific applications, but most flutter charting libraries do not have this feature. I specifically need them on Bar charts but would be relevant to other chart types

MS Excel documentation

I would like the ability to specify error bars for a particular bar in a bar chart

imaNNeo commented 10 months ago

As a hack, you can implement your own FlDotPainter to paint anything that you want. But I think you are not able to draw in the chart's coordinates easily. We can provide some functions to allow people to project the chart's coordinate in FlDotPainters

kealist commented 9 months ago

@imaNNeo Anything like that would be helpful on projecting coordinates.