File I/O of sparse matrices
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Registered Member 
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Hello,
what is the best way to write a sparse matrix into a file (resp. to read it from a file)? best, David |
Moderator
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in short:
#include <unsupported/Eigen/SparseExtra> ... saveMarket(mat, "filename.mtx"); .. loadMarket(mat, "filename.mtx"); |
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Registered Member
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Registered Member
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I tried to use this, and I get:
error: ‘saveMarket’ is not a member of ‘Eigen’ |
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Moderator
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which Eigen version are you using? and don't forget to #include <unsupported/Eigen/SparseExtra>
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Registered Member
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I don't remember, but from the date of download it is probably 3.04.
Of course I included <unsupported/Eigen/SparseExtra> |
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Moderator
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For sparse stuff, it is recommended to use the devel branch which at few bits to become the 3.1
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