scatter polar plot interpolation
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How can I produce a scatter plot in polar coordinates in Matlab? I need to have a scatter plot (r,theta,Z) where Z values are represented with a colorbar.
The result which I would like to obtain is the same of polarPlot function in R (openair package). In the image you can see an example of graph obtained
with R.
![R_WDS_NO3_emission.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/202969/R_WDS_NO3_emission.png)
In Matlab I tried with ScatterWindRose (from File Exchange) function, but it is not exactly what I want. I need a kind of surface interpolation of the dots.
![screenshot scatter plot.jpg](https://www.mathworks.com/matlabcentral/answers/uploaded_files/202970/screenshot%20scatter%20plot.jpeg)
Can you help me?
Accepted Answer
Bjorn Gustavsson
on 6 Feb 2019
Have a look at the help for TriScatteredInterp, griddata those functions should help you interpolate between your measurement points, then you might have use for this file exchange contribution: Polar pcolor
HTH
4 Comments
Bjorn Gustavsson
on 12 Feb 2019
Try to find out why! Step 1, go trhough all possible permutations of Z R and theta.
Step 2: type "dbstop if error" on the command-line prompt, run the polarPcolor again - and you'll get a debug-prompt in the function where the error occurred, then you have command-line access to all variables in that workspace - as well as the possibility to jump further up (and down) the function-call-stack by "dbup" (and dbdown).
HTH
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