Hi Martin,
Unfortunately, the error is coming on the data set that I have right now. I
was successfully able to display any field in the matrix and even the whole
matrix when I tried the example code provided by you. However, it is failing
on the dataset I am working on.I can share the file with y
> "PP" == Pallavi P
> on Wed, 28 Oct 2009 16:30:25 +0530 writes:
PP> Hi Martin,
PP> I followed your example on my set of data. Which has non zero values in
PP> 300k positions in 22638 X 80914 sparse matrix. I am able to load data
into a
PP> field and was able to do s
Hi Martin,
I followed your example on my set of data. Which has non zero values in
300k positions in 22638 X 80914 sparse matrix. I am able to load data into a
field and was able to do some operations (essentially t(m) %*% m). However,
when I tried to display the value in the resulted matrix. I
> "PP" == Pallavi P
> on Tue, 27 Oct 2009 18:13:22 +0530 writes:
PP> Hi Martin,
PP> Thanks for the help. Just to make sure I understand correctly.
PP> The below steps are for creating an example table similar to the one
that I
PP> read from file.
yes, exactly
Hi Martin,
Thanks for the help. Just to make sure I understand correctly.
The below steps are for creating an example table similar to the one that I
read from file.
n <- 22638
m <- 80914
nnz <- 30 # no idea if this is realistic for you
set.seed(101)
ex <- cbind(i = sample(n,nnz, replace=TR
PP> Hi all,
PP> I used sparseM package for creating sparse Matrix and
PP> followed below commands.
I'd strongly recommend to use package 'Matrix' which is part of
every R distribution (since R 2.9.0).
PP> The sequence of commands are:
>> ex <- read.table('fileName',sep=','
Hi all,
I used sparseM package for creating sparse Matrix and followed below
commands.
The sequence of commands are:
>ex <- read.table('fileName',sep=',')
> M <- as.matrix.csr(0,22638,80914)
>for (i in 1:nrow(ex)) { M[ex[i,1],ex[i,2]]<-ex[i,3]}
Even after 4 hours, I can still see the above co
Hi David,
Thanks for your help. This is exactly what I want.
But, I have number of rows of my matrix = 25k and columns size as 80k. So,
when I define a matrix object, it is throwing an error saying can not
allocate a vector of length (25K * 80k). I heard that, this data can still
be loaded into R
On Oct 26, 2009, at 5:06 AM, Pallavi Palleti wrote:
Hi all,
I am new to R and learning the same. I would like to create a sparse
matrix
from an existing file whose contents are in the format
"rowIndex,columnIndex,value"
for ex:
1,2,14
2,4,15
I would like to create a sparse matrix by
Hi all,
I am new to R and learning the same. I would like to create a sparse matrix
from an existing file whose contents are in the format
"rowIndex,columnIndex,value"
for ex:
1,2,14
2,4,15
I would like to create a sparse matrix by taking the above as input.
However, I couldn't find an ex
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