If I execute the following code in MATLAB
x = 1:5; sx = sparse(x); save sx.mat sx -v4;
the dimensions are 6 by 3 and not 1 by 5 as expected. Also sparse->data is 0.
For other versions -v6, -v7 and -v7.3 this works fine.
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I don't have support for sparse matrices in v4. Given how old it is I don't intend on implementing this. If you want to put together a patch I will commit it.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
If I execute the following code in MATLAB
x = 1:5; sx = sparse(x); save sx.mat sx -v4;
the dimensions are 6 by 3 and not 1 by 5 as expected. Also sparse->data is 0.
For other versions -v6, -v7 and -v7.3 this works fine.
I don't have support for sparse matrices in v4. Given how old it is I don't intend on implementing this. If you want to put together a patch I will commit it.