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 I made it as suggested in limma package but maimge function is shwoing error. Could you suggest how to make target file for this series.
Error in `[.data.frame`(obj, , columns[[a]]) : undefined columns selected.
could you help me to resolve the problem