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| https://observablehq.com/d/1541115f66f2a3eb Thank you very much. | 
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          Answered by
          
            mbostock
          
      
      
        Jun 25, 2023 
      
    
    Replies: 1 comment 2 replies
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| All color channels share the same color scale. So if you want to pass the startingChar column as the fill channel, you should make sure no other color channels are passing inconsistent data, such as  | 
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We have no plans to allow dx and dy to be specified as channels. These are constant options. If you to specify different values of dx and dy, you can create multiple marks, optionally using a filter to control which data gets which values of dx and dy.
Edit: As I described earlier in #1528 (comment).