Dear All,


My question is when i used the GSE data

gse <- getGEO('GSE7530')[[1]]
exprs(gse) <- log2(exprs(gse)+1)
Warning message:
In log(c(-2.50293388, -2.043776569, 0.552862779, 0.551170135, -2.433251302,
:
  NaNs produced

Quesion 1: I am not able to understand this error, is this mean that some of
the point is not present in data, if yes how to tackle such problem ???

Keeping this problem in view  would it be fine to go further with the
further steps ??

I tried to save this expression information using
> write.table(exprs(gse),file="gse_7530_exprssn",sep="\t")

this file do have expression information but it doesn't have any probe name
but jst the serial number of the probes, How can it be joined to the probe
names.

regards

Hemant

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