Funnel Chart

[archiewood]

Community contributions especially welcome on this issue

Feature Description

• Implement a Funnel Chart Component in Evidence.

Examples/Screenshots

https://echarts.apache.org/examples/en/editor.html?c=funnel

Considerations

• Probably using the echarts library.

[hughess]

An example of how to achieve this in Evidence is now in the "Custom Charts" section of the docs (https://docs.evidence.dev/features/charts/custom-charts#funnel-chart)

[dhrjarun]

Hi @archiewood I would like to implement this.

[archiewood]

Hey @dhrjarun sounds great!

We're open to PRs, hopefully this document gives a bit of context on how to go about this.

In terms of the technical side, it might also be helpful to look at some of our other viz components on an idea of how to get started.

If there's anything else I can point you towards, let me know!

[dhrjarun]

Hey @dhrjarun sounds great!

We're open to PRs, hopefully this document gives a bit of context on how to go about this.

In terms of the technical side, it might also be helpful to look at some of our other viz components on an idea of how to get started.

If there's anything else I can point you towards, let me know!

I've read some of the viz components. I just want to know, should it support multiple series or only single series

[archiewood]

Somewhat up to you as to what you'd find most useful.

In my experience, funnel charts are most often used for analyzing sequential steps, such as website conversion, or sales funnels, in which case single series are most common.

[dhrjarun]

Ok then I'll go for single series, later if multi series is needed we can implement that.