I have the following example: https://vega.github.io/vega-lite/examples/circle_github_punchcard.html
I need this to include color scaling.
For this I have tried some options which resulted in the following: editor
You can see the slight difference in color. How can I make it a consistent color?
The reason for this is because your dataset as duplicate 2022 values for C.
Simply add the opacity setting directly within the encoding section:
"encoding": {
"opacity": {"value": 1},