Expand chart type supports

[Chenglong-MS]

Data formulator support new charts based on chart templates:

https://github.com/microsoft/data-formulator/blob/main/src/components/ChartTemplates.tsx

What are new charts you are interested in? Let's expand charts supported by the tool.

[rishabhjain1712]

@Chenglong-MS hi, i'd like to work on this issue. could you give more explanation on what exactly needs to be added

[Chenglong-MS]

@rishabhjain1712 That would be fantastic!

How about let's get started with adding Pie Chart (https://vega.github.io/vega-lite/examples/arc_pie.html) and US Map (https://vega.github.io/vega-lite/examples/geo_layer.html) as new chart templates to Data Formulator so people can create them?

A list of steps:

• create a template of the chart similar to those already created (https://github.com/microsoft/data-formulator/blob/main/src/components/ChartTemplates.tsx#L68), specify which channels are available for the templates and how they should be assembled into the template.

• if certain channels are not already supported, we need to add them to channel_list (https://github.com/microsoft/data-formulator/blob/main/src/components/ChartTemplates.tsx#L40)

• Once these two are set up, we can test them with assemble_charts (https://github.com/microsoft/data-formulator/blob/main/src/app/utils.tsx#L194)

I expect Pie Chart will be easiest, how about starting with Pie Chart first?

[rishabhjain1712]

Hey @Chenglong-MS apologies for the delay, I was battling a series of interviews (and losing 😅). Starting this today.

[rishabhjain1712]

@Chenglong-MS what about the icons for both of them?

[Chenglong-MS]

We probably don't need to worry about icons for now, can use some MUI icons as placeholders.

[KaranPradhan266]

@Chenglong-MS Hi! Since this issue has been quiet for a while, I went ahead and explored an implementation for it. I now have a working prototype.
If this looks aligned with the expected direction, I can open a PR and refine based on feedback. Let me know what you think!

Here are the results: