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Add legend for colour scale #12

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peterdesmet opened this issue Apr 3, 2020 · 8 comments
Closed

Add legend for colour scale #12

peterdesmet opened this issue Apr 3, 2020 · 8 comments

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@peterdesmet
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Screenshot 2020-04-03 at 13 39 51

It is unclear what those colours represent. A legend should be added, with a unit and values.

@niconoe
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niconoe commented Apr 7, 2020

Indeed, will do after implementing the proper color scale (#2).

@niconoe
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niconoe commented Apr 8, 2020

Update: There's now a basic legend, comments welcome!

@peterdesmet
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Nice, but the unit is not indicated. 😄

@niconoe
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niconoe commented Apr 9, 2020

Indeed!

@amyjsdavis, what unit should I show? I understand 0 means "no risk at all" and 100 means 100% certainty, would it be better for end-users if we multiply the value by 100 and present them as percent?

@SoVDH, maybe you also have an opinion on this?

@amyjsdavis
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@niconoe : yes you are interpreting risk correctly, although in reality there are rarely places that are 0 or 100% risk. Hmm, the convention is show the scale on 0-1, or using the lowest and highest risk as the scale bounds (ie. .005 and .995), but perhaps using percents is more intuitive. I will default to the wisdom of @SoVDH.

@SoVDH
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SoVDH commented Apr 15, 2020

I would suggest showing a range from (0-no risk) to (1 high-risk) for risk maps and (0-low uncertainty) to (1-high uncertainty) for uncertainty maps. Percentage are perceived and interpreted differently from a user to another. Risk communication literature suggests to avoid the use of percentage because if refers to relative risks.
Does this sounds ok to you @amyjsdavis ?

@amyjsdavis
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@SoVDH : that makes sense and is fine by me!

@niconoe
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niconoe commented Jul 14, 2020

Implemented

@niconoe niconoe closed this as completed Jul 14, 2020
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