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Nicely done!

Tangent: I am looking for a different "data painter," i.e., a simple GUI where I can draw data points and have it generate a table or CSV file with them.

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I found this... Something like what you have in mind? (not Foss)

https://plotdigitizer.com/

Ed: or maybe this (gpl) - didn't realize this existed... https://markummitchell.github.io/engauge-digitizer/

Ed2: another along similar lines (pun not intended). Looks like most assume you have a bitmap of a graph, rather than let you just draw datapoints.

https://automeris.io/WebPlotDigitizer/

Thanks for links! I was thinking about having the drawing part integrated into such a tool, but what you shared will work too. Cheers!

I thought about "draw to create data" before, but it brings problems when your data contains high dimensions (lots of columns). Painted data only defines limited number of dimensions, for other columns, Some prediction model can be used to infer the values. but with higher dimension in data, the prediction gets less convincing.

Great point. For my use case, drawing points on a 2d plane would be good enough. I wasn't considering higher dimensions. Maybe it would be possible to "sculp" 3 or 4d data using a cad-inspired direct manipulation GUI like SculptGL or Meshmixer [0,1, respectively].

0. https://stephaneginier.com/sculptgl/ 1. https://meshmixer.com/

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