[Bug] visualDimension has no effect on treemap

[jbdesbas]

Version

5.6.0

Link to Minimal Reproduction

https://codepen.io/jbdesbas/pen/ogNdeBM

Steps to Reproduce

1. Create a treemap chart with multi-dimension data (eg : data = [{value: [ 100, 50, 'a' ]}, {value: [ 200,50 ,'b' ]}, {value: [ 300,50 ,'b' ]} ]
2. Try to select dimension to represent (0 or 1)

data= [
  { value:[10,'n1',100,50]},
    {value:[10,'n2',200,50]},
  {value:[10,'n3',300,50]},
  ];
  
option = {
        series:[
            {
                name:"test",
                type:'treemap',
                data: data,
                visualDimension:2,
            }
        ],}

Current Behavior

The visualDimension parameter seems to have no effect, the dimension 0 is always used for area size.

Expected Behavior

The visualDimension parameter should allow to select a dimension as area size.

Environment

- OS:Pop OS
- Browser: Firefox 129.0.2 
- Framework:React@18

Any additional comments?

No response

[MatthiasMert]

You are mistaking what visualDimension does. The documentation suggests that it is used to specify the dimension for coloring, together with colorMappingBy set to 'value'.

[jbdesbas]

Ok I understand, thank you @MatthiasMert 👍 .
I can now use the visualDimension parameter to use any dimension as color mapping.
But I cannot use discrete category variable (eg : 'n1', 'n2', 'n3') for color mapping. I didn't see anything about that in the documentation.

See here the chart is blank if visualDimension:1