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Posts by sankhwar.madhu
... Dear james, Thank you for giving me quick reply I am naive in bioconductor. I just ran the code which you have provided. again it is showing the error. z <- read.maimages(dir(".", "^GSM"), columns = list(R = "F635 Median", Rb = "B635 Median")) Read GSM249524.gpr Read GSM2500 ...
read.maimages(targets, source="genepix") Error in `[.data.frame`(obj, , columns[[a]]) : undefined columns selected
... Hi bioconductor help I am Madhuand trying to analyze the breast cancer data of sereis GSE9893 which is having gpr file as one channel microarray and data counted as median Transformed log. Images have been analyzed using GenePIx. I must be sure there is a problem in making targets.txt file however ...
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