Grow/shrink ranges in bed file to a specified length

Question

[boczniak767]

Is there any tool which can make entries in bed file equal length?

I've checked bedtools slop but it's not what I'm looking for.

The goal is to get fasta file with equal-sized sequences, but I've to start with bed file with my coordinates.

[Devon Ryan]

Wouldn't awk work?

Answer 1

[Pierre Lindenbaum]

awk -F '\t' '{X=10000; mid=(int($2)+int($3))/2;printf("%s\t%d\t%d\n",$1,(mid-X<0?0:mid-X),mid+X);}'

??