Isogeometric Analysis toolbox for CALFEM for MATLAB.
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Make sure you have CALFEM for MATLAB installed, see https://github.com/CALFEM/calfem-matlab
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To install the IGA toolbox, click "Download as zip" to download the package, and then unpack it.
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Add the directories to the MATLAB path by clicking "Set path" in MATLAB, then "Add Folder...", select "calfem-matlab-iga/IGA" and then "Save"."
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Using the same method as in 3. add the following folders too: "calfem-matlab-iga/IGAplot", "calfem-matlab-iga/IGAutil", "calfem-matlab-iga/NURBS"
enter the following commands at the MATLAB prompt:
help FindSpan
The help text for the FindSpan command should appear if calfem-matlab-iga is correctly installed.