sparse2 mexFunction not found

After reading Creating Sparse Finite-Element Matrices in MATLAB

I downloaded sparse2.m form SuiteSparse .

But when I use

D = sparse2(i,j,s);

It shows error

Error using sparse2 (line 27)
sparse2 mexFunction not found

Where can 'sparse2 mexFunction' be founded?

[James Tursa]

Does this package come with C/C++ source code that you need to compile yourself?

[JAI PRAKASH]

It has some C files. Please have a look on the files it has.

Download Package

Answer 1

[Jan]

Did you read the README.txt file and followed the instructions?

 ================================================================================
 QUICK START FOR MATLAB USERS (Linux, Mac, or Windows):  uncompress the
 SuiteSparse.zip or SuiteSparse.tar.gz archive file (they contain the same
 thing), then in the MATLAB Command Window, cd to the SuiteSparse directory and
 type SuiteSparse_install.  All packages will be compiled, and several demos
 will be run.  To run a (long!) exhaustive test, do SuiteSparse_test.
 ================================================================================

Was SuiteSparse_install successful? If not, which error messages did you get?

[Jorge Barrasa Fano]

Hi Jan,

I have a similar problem, during installation of SuiteSparse, I get this error message:

"c:\users\...\downloads\suitesparse-5.4.0.tar\suitesparse\metis-5.1.0\gklib\GKlib.h(68): fatal error C1083: Cannot open include file: 'regex.h': No such file or directory"

I get the same error message for some packets within SuiteSparse (such as CHOLMOD, KLU or SuiteSparseQR) but for others it works fine. Is there anything I'm missing?

Thanks,

Jorge

[Jan]

Does this mean, that you try to run the files inside the compressed "suitesparse-5.4.0.tar" folder? Please explain with details, what you are doing.

If I get the error message "Cannot open include file: 'regex.h': No such file or directory", I'd search for this file manually at first. Which compiler are you using?

[Jorge Barrasa Fano]

Hi Jan,

Thanks for your answer. We managed to solve it:

https://nl.mathworks.com/matlabcentral/answers/425029-suitesparse-installation-cannot-open-include-file-regex-h