well, you said you tried
rowSums(M == 0)
but according to the error message it seems that you tried
rowSums[M == 0]
Try to use parenthesis '(' instead of brackets '['.
Best,
Dimitris
onyourmark wrote:
Dear Dimitris,
Thanks very much. I tried dim(M) and get:
[1] 5030 2142
which I thought meant that my matrix M is actually a matrix, but
I tried str(M) and get:
int [1:5030, 1:2142] 2 1 2 0 1 0 2 1 2 -1 ...
When I tried
rowSums(M == 0)
I got:
Error in rowSums[M == 0] :
object of type 'closure' is not subsettable
What am I doing wrong?
Thanks so much.
Dimitris Rizopoulos-4 wrote:
if 'M' is your matrix, then try this:
rowSums(M == 0)
I hope it helps.
Best,
Dimitris
onyourmark wrote:
Hi. I have an n x m matrix M some of who's entries are zeros. I want to
know
how many zeros there are in each row -perhaps stored in a 1 x n vector
which lists the number of zeros for each row of M.
Before I had a vector V and I was able to get the number of zeros in V by
doing length(V[ V==0]) but when I try something similar for M, like M[
M==0]
it creates a vector not a matrix and so this does not work. Does anyone
have
a solution to this?
Thank you.
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
______________________________________________
R-help@r-project.org mailing list
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PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
