Hi,

I am trying to create a GRanges list object for all the features of a
transcript database created from the GENCODE gtf file. I have created
GRanges object for the features "exons","genes","transcripts","introns".
When I try to combine these individual objects into a GRangesList, I get
the following error:

>grl<-GRangesList("genes"=genes.gencode,"transcripts"=transcript.gencode)
Error in .Method(..., deparse.level = deparse.level) :
  number of columns for arg 2 do not match those of first arg

Detailed steps I have used in creating the transcriptDb object and
extraction of features is identical to the procedure followed in this blog
post
<http://chitka-kalyan.blogspot.com/2014/02/creating-gencode-transcript-database-in.html>

I would appreciate if somebody could help me solve this!

Regards,
Kalyan

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