Hello,
Try to get the number of zero values before:
i <- er.miRCounts == 0
n <- sum(i)
er.miRCounts[i] <- rnorm(n,mean=1, sd=0.1)
Also, there is no need for a end-of-instruction ';'.
The semi-colon is the instruction separator, so if you put it at the end
you will be separating the instruction you wrote from the NULL
instruction. A simpler example could be
mean(1:5);
This is *two* instructions:
mean(1:5); NULL
Hope this helps,
Rui Barradas
Às 22:33 de 08/01/21, Yuan Chun Ding escreveu:
Hi R users,
I am analyzing miRNA sequence data for a special network analysis, I need to
replace zero values in a matrix as random numbers with mean of 1 and standard
deviation of 0.1.
er.miRCounts[er.miRCounts==0] <- rnorm(1,mean=1, sd=0.1);
this code made all zero values as 1.13, not random numbers across different
zero values. If all zero values in one row are replaced by the same 1.13,
then sd in that row is zero, causing other problem in the following calculation.
Can you help me?
Thank you,
Yuan chun Ding
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