CalcGCContent #

[[step]]
    action = "CalcGCContent"
    segment = "read1" # Any of your input segments, or 'All'
    out_label = "gc"

Count what percentage of bases are GC (as opposed to AT). Non-AGTC bases (e.g. N) are ignored.

Output is 0..100.

Wrapper around CalcBaseContent with bases = "GC", ignore="N", relative=true).