Saving large matrices WITHOUT hdf5
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I have a large matrix currently stored in .mat v7.3 format that I need to read into another program. This program can read normal .mat files without problem, but can't handle HDF5 files. This is a problem, since Matlab refuses to save the variable in anything but a -v7.3 file.
How can I force Matlab to save this variable in a non-HDF5 file?
回答（3 个）
Chad Greene
2014-4-28
A = rand(4,3,2,5);
dlmwrite('mydata.txt',A)
Walter Roberson
2014-4-28
0 个投票
What formats are supported by the other program?
You can fwrite() the data as binary. Note that if you fwrite() anything with 2 or more dimensions, the memory is written "down" columns, corresponding to varying the earlier dimensions more rapidly than the later dimensions.
Jason Corso
2014-4-29
0 个投票
1 个评论
Walter Roberson
2014-4-29
If the matrix is 2 Gb or larger (I think it is, 4 Gb max for sure) then there is no way to store it in a v7 .mat file. v7 .mat files include size fields that are limited to 32 bits.
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2014-4-28
2014-4-29
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