pti onal Parameters:Рdt=from header(dt) or .004 time sampli ng in tervalРdx=from header(d2) or 1.0?midpo int sampli ng in tervalРft=0.0?first time sampleРn tau=n t(from data) n umber of migrated time samples dtau=dt(from header) migrated time sampli ng in terval ftau=ft?first migrated time sampleРtmig=0.0?times corresp onding to in terval velocities in vmigРvmig=1500.0?in terval velocities corresp onding to times in tmigРvfile=?n ame of file containing velocitiesРverbose=0 verbose = 1 echoes in formati onРtmpdir= if non-empty, use the value as a directory pathРprefix for storing temporary files; else if theРthe CWP TMPDIR environment variable is set use its value for the path; else use tmpfile()РSUMIGPS- MIGrati on by Phase Shift with turni ng rays sumigps <stdi n >stdout [opti onal parms]
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