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Redundant legends for collapsed buildings #124

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tieganh opened this issue Jan 29, 2024 · 2 comments
Open

Redundant legends for collapsed buildings #124

tieganh opened this issue Jan 29, 2024 · 2 comments
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@tieganh
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tieganh commented Jan 29, 2024

When exploring the M4.9 Georgia Strait scenario, I was looking at the number of collapsed buildings at the CSD level. The legend has 20 different colours to represent 0-1 and 1-1 casualties. This is confusing because it's obviously way too many legend colours, such that I can't tell the difference between several of them anyways, and 1-1 is meaningless.

@tieganh tieganh added the Bug Something isn't working label Jan 29, 2024
@anthonyfok
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Thanks Tiegan! I can see it too:
image

I wonder if we could try fixing it by reducing the rounding, i.e. increase the number of significant digits? Even though a building is either collapsed or not collapsed (i.e. whole number), I guess the user would understand it is some kind of probability and thus would accept seeing decimal numbers.

That said, I agree that 20 different shades of colours are too many, especially in this case. Perhaps something like 5 to 10 different colours?

@anthonyfok anthonyfok self-assigned this Jan 29, 2024
@tieganh
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tieganh commented May 15, 2024

Hey @anthonyfok - thanks for looking into this!

My initial thought is that I don't think we want to change the rounding because we wanted to avoid showing people fractions (hard to understand and probably too precise), although I agree that using red to represent 1 collapsed building is going to be misleading and it's tricky to set it up as a binary (<1, >1). Since we are using fractions in the y-axes of our bar charts, I think it can be appropriate to add a more detailed legend to the map. So let's increase significant figures for the legend to 1 (ex: 0.1 collapsed buildings) and reduce to 5 shades, if that works.

Will this impact only this scenario or should we think about how to apply this to others?

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