I cannot figure out how to convert strands coordinates downloaded from BioMart (-1, 1) to strands coordinates compatible with Galaxy (-, +) in the c4 column of a BED file. There is a paper saying to compute the expression:
c4==1 and "-" or (c4==1 and "+" or "")
I've tried this and other small variations of this expression but none seems to work.
Can anyone help me pease? It should be the same as in Python...