My suggestion would be to check out this repository with docs and examples.https://github.com/looker/custom_visualizations_v2 The only real trick for most custom visualizations is to take the looker query result and transform it into whatever signatu...

I’ve left a comprehensive answer here: https://github.com/looker/custom_visualizations_v2/issues/130#issuecomment-584771699 but I’ll copy it over for convenience. For subsections the only thing I could think of is very hacky. If you create an option ...