Hi all, I have a big MAF file (7 Gb) corresponding to several alignments and regions in the whole genome. I have been trying to split them into daughter files depending on their chr. I am using the tool: Filter MAF by specified attributes, with the following parameters:
When Species hg19 Species Attribute attribute_chr Conditional Is Chromosome chr21
However, the output file still keeps all the other MAF blocks and still weights 7 Gb. Could anyone suggest me reasons why this could be happening? If I should provide any further info, please let me know.