Hii,
I was working on this microRNA expression analysis. while doing I stuck by this error. Need to help to proceed further
Thank you
>library(affy) >data <- ReadAffy() >data AffyBatch object size of arrays=541x541 features (18 kb) cdf=miRNA-4_0 (??? affyids) number of samples=4 Error in getCdfInfo(object) : Could not obtain CDF environment, problems encountered: Specified environment does not contain miRNA-4_0 Library - package mirna40cdf not installed Bioconductor - mirna40cdf not available In addition: Warning message: missing cdf environment! in show(AffyBatch)
I have searched to find solution for the cdf file.How to obtain a CDF
i did normalization. using the same procedure.
Thank you so much