[R] how to convert the lower triangle of a matrix to a symmetricmatrix
marella
mbnchakravarthy at gmail.com
Tue Nov 29 11:07:32 CET 2011
@Olivier ETERRADOSSI :
I tried "gdata" to convert a (10000x10000) lower triangular matrix to full
matrix and got memory problems. Especially at this step :
upperTriangle(a) <- lowerTrangle(a)
it consumes more than 3 GB . Any ideas on how to create full matrix with
efficient memory management ?
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