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florin.unga
France
2 Posts |
 Posted - 04/13/2016 : 08:45:26 AM
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Hello all,
I have 2 columns, X-longitude, Y-latitude (1000 lines). I need a scatter plot and colored by their density. So if they are closer, the color should be darker.
What I'm doing, is I create a matrix from 2d frequency counts/Binning, create the matrix with 1 degree binning then plot as surface 3D Surface. This is ok, but not too satisfying for me.
What I would like, is to assign a color to every long/lat (every line) corresponding to their density.
So basically, from 2 columns I would like to have a 3rd column, which will represent the color corresponding to their distance between them...
I can give some graphs as example if needed.
Thanks in advance,
Cheers.
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meili_yang
103 Posts |
Posted - 04/13/2016 : 09:30:34 AM
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Hi Florin,
Origin has a build in template to plot density for XY column. The density calculation is based on kernel density estimation. This feature is added since Origin 2015, and please take a look at this example here for how to plot:
http://www.originlab.com/doc/Origin-Help/Create-2D-Kernel-Density
Is this what you are trying to plot? If not, just paste some example here, and we can check how to graph in Origin.
Meili
OriginLab Tech Support |
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3D scatter plot colored from 2d frequency count