Different colors

[SSebigo]

For a rectangle interval chart, what is the idiomatic way to have different colors for bars?

For example, I have 5 bars and one should have a different color from the others, how to achieve that?

[entronad]

This example is in polar coordinate, but rectangle bars are just the same.

graphic/example/lib/pages/polar_interval.dart

Line 104 in 514456f

color: ColorAttr(

[SSebigo]

@entronad How does it use a String as an index for the colors list? (Sorry if it's a mistake)

[entronad]

There are two steps, the String variables are converted to index ints by Scale, and the index mapped to the colors list.
There is a detailed and full introduction:
https://medium.com/@entronad/the-versatility-of-the-grammar-of-graphics-d1366760424d

[SSebigo]

@entronad Is it possible a value that should never be displayed onscreen? So far from what I see the value used to index the color has to be "registered" inside Chart.variables, the problem being that those values are displayed in the tooltip.

[SSebigo]

Nevermind, found out how to do it. Thx.