# Changing markers for some but not all data categories in a plot\_channel\_contribution\_grid plot

**URL:** <https://discourse.pymc.io/t/changing-markers-for-some-but-not-all-data-categories-in-a-plot-channel-contribution-grid-plot/17310>\
**Category:** v5\
**Tags:** pymc-marketing\
**Created:** [September 3, 2025, 2:38am UTC](https://discourse.pymc.io/t/changing-markers-for-some-but-not-all-data-categories-in-a-plot-channel-contribution-grid-plot/17310 "2025-09-03T02:38:24Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Wesley\_Young](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.pymc.io/wesley_young/32/6048_2.png) [@Wesley\_Young](https://discourse.pymc.io/u/Wesley_Young)\
**Post date:** [September 3, 2025, 2:38am UTC](https://discourse.pymc.io/t/changing-markers-for-some-but-not-all-data-categories-in-a-plot-channel-contribution-grid-plot/17310/1 "2025-09-03T02:38:24Z")

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So I am working with data with 12 different channels. Naturally with so many channels, making sure the charts that show all of these values simultaneously is readability is a concern. With that in mind, I am trying to wrap my head around how to modify markers for select categories of data in the chart. The below result from running plot\_channel\_contribution\_grid illustrates my issue. What I would like to do is set the markers for some of them to triangles or some other marker so as to differentiate those figures with way too similar colors. How would I do this for say setting tv\_RON to a triangle rather than a point?

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/pymc3/original/2X/1/1d36fd66921b7ab69874182361f4fb8451398a34.png)

edit: In case you are curious, the notebook where I am generating this is at [marketing\_mix\_modeling/mmm.ipynb at main · helios1014/marketing\_mix\_modeling · GitHub](https://github.com/helios1014/marketing_mix_modeling/blob/main/mmm.ipynb)