I am trying to meganize the daa file after blastx against the swissprot database. I followed the suggestions in this post-Import peptide identification to MEGAN
So I created a tab-separated mapping file for swissprot ids and NCBI ids-
When I use this mapping file on the command line version of Megan, I get “java heap size” error, even after increasing the java flag Xmx to 500G.
The idmapping file is 6.4G in size.
When I try to meganize the daa file on GUI version, the daa-meganizer dialog box doesn’t take my mapping file.