How to set color and default height of bw file in config.json

[Jasonzzzzzzzzzzzzzz]

Hi there,
this is a example of my config.json.

{
      "type": "QuantitativeTrack",
      "trackId": "124",
      "name": "impute_P350SkeletalMuscle_H3K4me3",
      "adapter": {
        "type": "BigWigAdapter",
        "bigWigLocation": {
          "uri": "https://xxxxxxx/impute_P350SkeletalMuscle_H3K4me3.bw",
          "locationType": "UriLocation"
        }
      },
      "category": [
        "H3K4me3",
        "impute",
        "SkeletalMuscle",
        "P350"
      ],
      "assemblyNames": [
        "Pig_genome"
      ]
    }

[cmdcolin]

Hello,
Here is a method to do this

{
      "type": "QuantitativeTrack",
      "trackId": "volvox_microarray",
      "name": "wiggle_track xyplot",
      "category": ["Integration test", "Wiggle"],
      "assemblyNames": ["volvox"],
      "adapter": {
        "type": "BigWigAdapter",
        "bigWigLocation": {
          "uri": "volvox_microarray.bw",
          "locationType": "UriLocation"
        }
      },
      "displays": [
        {
          "type": "LinearWiggleDisplay",
          "renderers": {
            "XYPlotRenderer": {
              "type": "XYPlotRenderer",
              "posColor": "green",
              "negColor": "purple"
            }
          }
        }
      ]
    }

I know this is a very nested complex thing just to change color....
I am hoping to try to simplify this at some point so it's easier!

[Jasonzzzzzzzzzzzzzz]

That sounds great!
Thanks!

[Jasonzzzzzzzzzzzzzz]

by the way,
have to set a displayId in displays

[cmdcolin]

good catch. I think with the very latest versions (v3.4.0+) you may not need the displayId, it will synthesize a displayId automatically https://jbrowse.org/jb2/blog/2025/05/13/v3.4.0-release/