Best practice needed: Own "sales funnel" chart type

Hi Isomorphic,

I need to design a chart like the one in the attachment. I have the following technical key data:

• Will be placed in a VLayout
• No size changes (only if browser window size changes)
• No background and no axxis
• Slice count known at create-time and constant
• Best would be if it were possible to set the data like "FacetChart.setData()"
• Colors needed known at create-time (color-to-slice-mapping) and constant
• Number value does not affect slice size
• Legend (best: next to slice)

Generally speaking it is similar to ChartType.COLUMN, but simpler.

What is is suggested approach for this?
Would it be possible for me to add this to ChartType (making e.g. a call like "FacetChart.setChartType(ChartType.FUNNEL)" possible)?
I'm using 4.1p currently.

Best regards,
Blama

Attached Images

Sales_Funnel.jpg (8.5 KB)