MATLAB: How to export the contourm C variable to a struc

contourmshapefilestruct

I have created a matlab figure with multiple contours with contourm. I would like to export the contours to a shape file. How can I export the C variable to a struc? What is the format of the C matrix? It contains more than just lat and long data.

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https://www.mathworks.com/matlabcentral/fileexchange/28447-contourcs--to-obtain-contourc-output-as-a-struct-array

http://www.mathworks.com/matlabcentral/fileexchange/38863-extract-contour-data-from-contour-matrix-c

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MATLAB: Contourm plotting

According to the documentation for contourm, vector inputs are allowed only if the lengths of lat and lon correspond to the number of rows and columns of Z, respectively. Alternatively, lat, lon, and Z must be matrices that represent a grid. So you can transform your vector data to a grid. Here's an example of how you can do that using griddata:

% Create a grid of latitude and longitude
[LatGrid, LonGrid] = meshgrid(linspace(min(latitude), max(latitude)), ...
                        linspace(min(longitude), max(longitude)));
% Use griddata to compute ozone for each grid point
OzoneGrid = griddata(latitude, longitude, ozone, LatGrid, LonGrid);
% Call contourm
contourm(LatGrid, LonGrid, OzoneGrid);

If you're using R2009a or newer, use TriScatteredInterp class for efficiency.

MATLAB: How to convert or extract arrays from a structure

S.coefs already is an array. If you mean that you want it in a separate non-struct variable, simply assign it to something,

coefficients=S.coefs;

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MATLAB: Contourm plotting

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