Reflectance %

[blue-j]

I am hoping to normalize the vertical axis for SDs to use reflectance %. Is there a way to do this with Colour? Any suggestions would be welcome and appreciated. -J

[KelSolaar]

Hi @blue-j,

The computed reflectance should already be in percentages. Can you please clarify what you need to do?

Cheers,

Thomas

[blue-j]

Thank you as always Thomas for your attention and time. I am trying to normalize the vertical axis to reflectance percentage so I can stack multiple SDs atop each other, compare, etc. Something like what Robin Myers has done in his excellent SpectraShop:

[KelSolaar]

import colour

colour.plotting.plot_multi_sds([sd * 100 for sd in  colour.SDS_COLOURCHECKERS["ColorChecker N Ohta"].values()], legend=False, y_label="Reflectance %")

[blue-j]

is there a way to get this kind of output for a single SD? i just tried a bunch before asking, please forgive! - J

[KelSolaar]

Sure, just pass the single sd within a list, i.e. [sd].

[blue-j]

i'm gonna push my luck a little here and ask, how do you get fixed axes? i need 0-100 and 360-830. i just spent an hour trying to get xlim and ylim passed into the function without joy... Apologies for pestering you, and much thanks!!

[KelSolaar]

bounding_box=[400, 700, 0, 100]