def put_blockheader(f, bh):
    f.write(struct.pack('>4hl4f', *bh))
    return
build isochores with SNP density.
dataset/ETHPy150Open jjhelmus/nmrglue/nmrglue/fileio/varian.py/put_blockheader--crossover with--dataset/ETHPy150Open CGATOxford/cgat/obsolete/pipeline_snps.py/buildSNPDensityIsochores