Hi all,

The genefilter package can be used to filter genes for microarray data, like "find genes whose expression profile is similar to that of specified genes" or " filter genes from a microarray dataset". Now I've many genes detected by NGS data in many conditions, a matrix like [20,000 genes*30 condistions], each element is the read count for that gene. The matrix is too huge for headmap function in R to cluster these genes. So I think I need to filter some genes or discard some useless genes first. Is there any package like genefilter for NGS or some ideas on how to filter the genes?

Thank you!

Regards, 
Xiaohui

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