Use dynspread=True by default for explorer if datashade/rasterize #1155
Conversation
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Pinging @jbednar for feedback! Seems sensible in the shared example, except that this example has very little data so rasterizing it isn't very relevant. |
Right. I was imagining a scenario where a user, who doesn't have much experience in the HoloViz ecosystem, randomly clicking things and seeing what it does. If they see a blank plot, they might be turned away from using datashader, but if they at least see something, that might pique their curiosity. I suppose something else that can remedy this is having doc specified for each param and so it shows up as a tooltip. |
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I think |
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Alternatively, the explorer could warn the user when they set rasterize/datashader on a dataset that has too little data. |
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Is there a downside to setting dynspread=True in any case though? |
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Maybe, if so that would be the default in hvPlot? |
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You wouldn't want to use any form of spreading if you are rendering antialiased lines in datashader. But I don't know if antialiased lines have reached hvplot yet. |
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I think dynspread should default to True in hvPlot in general, not just for Explorer, when doing rasterize on a Points or Scatter plot, unless people have passed in an explicit point size. It's not appropriate for a line plot, where instead we should be respecting the line_width option already. |
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BTW, I think Explorer should also be enabling either LTTB or rasterize automatically when the data size is too large. Maybe LTTB by default for line data >100000 points, and rasterize by default for point data > 100000 points? |
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What's LTTB? |
I think it's more user friendly if dynspread is True, or else can barely see anything:
With dynspread=True:
