I am using the reshape package to convert a series of values into a binary
matrix. The binary matrix is very sparse with many zeros and I'd like to
use cast to generate a sparse matrix using any of the sparse matrix
packages of choice. Is there functionality to support this use?
Are there strategies or other packages that that may be useful?
Due to memory constraints, it would be best to convert to sparse matrix on
the fly rather than build the full matrix and then convert it.
Thanks for the help,
Yin
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