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 Filling area under curve with gradient		  New Topic  Reply to Topic
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dwolfe

USA
2 Posts
Posted - 08/24/2021 :  09:04:31 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi,

I have x,y data that is related to the spectral output of various emission sources. I want to fill the area of the curves with a rainbow gradient corresponding to the color of the wavelengths. See attached image. How does one fill in a gradient underneath the curve with the corresponding wavelength colors.

YimingChen

1609 Posts
Posted - 08/24/2021 :  11:10:04 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
1. Double click on the curve. Under Line tab of the dialog, check Fill Area Under Curve box. The dropdown should default to Normal.
2. Select Pattern tab. In Fill Color drop down, select By Points->Map->Col(A).
3. Then you can select Colormap tab. Click Column header Level to align From/To value to the color map. Click Fill where you can load color palette of Spectrum for example.

James
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dwolfe

USA
2 Posts
Posted - 08/24/2021 :  1:06:33 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Do you know how to have the gradient composed of more colors? Its very discrete at the moment and would like it to look like the example image I posted previously.


https://my.originlab.com/ftp/forum_and_kbase/Images/irradiance%20plot.opju
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YimingChen

1609 Posts
Posted - 08/24/2021 :  1:29:44 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
In Set Levels dialog, increase the # Major Levels or # Minor Levels.

James
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