Visualization of Data in polar coordinates -- CFD Online Discussion Forums

December 2, 2002, 13:45	Visualization of Data in polar coordinates	#1
Sujit Kirpekar Guest Posts: n/a	Hi, Can anyone help in converting a polar grid (r- and theta-) to X and Y for the purpose of plotting (The gird is unevenly spaced in r- and of course, evenly spaced in theta-)? MATLAB can do it using griddata() but cannot compute values close to the origin. MATLAB returns NaN (Not a Number) value for points near the origin. Is there any visualization software (free, Unix based) that can read in 2D matrices with rows representing the r- direction and columns the theta- direction (and each element filled with value representing the function at that value of r- and theta-)? Many Thanks --Sujit

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