tools_2.14.0
Cheers,
Josh
On Wed, Aug 3, 2011 at 4:26 PM, C6H5NO2 c6h5...@gmail.com wrote:
Hello R users,
I am trying to give the QR decomposition for a large sparse matrix in
the format of dgCMatrix. When I run qr function for this matrix, the R
session simply stops and exits
Thank you, Martin.
Yes, on my computer (48Gb memory) it also gives a message caught
segfault as you got. So it is because the matrix size is too large.
I apologize for the offence I've caused.
2011/8/4 Martin Maechler maech...@stat.math.ethz.ch:
C6H5NO2 c6h5...@gmail.com
on Thu, 4 Aug
Hello R users,
I am trying to give the QR decomposition for a large sparse matrix in
the format of dgCMatrix. When I run qr function for this matrix, the R
session simply stops and exits to the shell.
The matrix is of size 108595x108595, and it has 4866885 non-zeros. I
did the experiment on
Hi R users,
I want to know whether there is a fast method to compute the nonzeroes for
each column of dgCMatrix.
For summation or average I can use colSums or colMeans. To count the
non-zeroes I write a function
colCounts - function(Mat) {
M1 - apply(Mat, MARGIN=2, FUN=nnzero)
}
But it
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