How to debug `datum` transformations and aggregations in Altair (Python)?

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I tried to create some chart in Altair using a few aggregations and calculations. I got the chart drawn, but that what was displayed on the chart wasn't looking correct. I wondered if it is possible to look at the result datum to check calculations.

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1 Answers

After some search and help from my groupmate, it turned out that one can see the result datum object. You have to press on 3 dots in the upper right corner of the chart -> Open in Vega Editor -> Data Viewer tab (right bottom part of the screen) -> select data_0 resource.

I thought it might be helpful for someone, cause I haven't managed to find this info on the internet.

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