Digitization and interpolation of contour map.

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E R SH RAJ Male
E R SH RAJ Male 2016-2-15
回答： Arnab Sen 2016-2-22
Attached contour map with a range X-AXIS=[123-131] & Y-AXIS=[33-43] needs to be digitized and interpolation for a 0.1 x 0.1 grid.
I used Webplotdigitizer(<http://arohatgi.info/WebPlotDigitizer/>) to get values at the known points and placed in excel sheet(Attached). Also i have attached the code which can interpolate these values and give me matrix of (100 x 80) [ 43-33/0.1=100 & [ 131-121/0.1=80] I am facing problem in interpolation ,as it give errors.So can anybody please look in code.

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回答（1 个）

Arnab Sen
Arnab Sen 2016-2-22
This issue might be due to the fact that there were some change in all the 'interp' functions in MATLAB release R2013b. As a workaround, consider the in-built function 'griddedInterpolant' instead of 'interp2' to achieve the same goal.
For more details about 'griddedInterpolant', refer to the following link:
http://www.mathworks.com/help/matlab/ref/griddedinterpolant-class.html

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