bmrg pfix iffile ilfile ifinc iftrc iltrc pfix: =prefix for input file names NOTE:pfix length is no. of invarient charcters Ex. If file names run s001 to s090 then pfix=s0 Ex. If file names run s001 to s132 then pfix=s iffile =number of first file (suffix) EXAMPLE: if file=s001.seg, iffile=001 ilfile =number of last file (suffix) EXAMPLE: if file=s092.seg, ilfile=092 ifinc =increment for file number (suffix) iftrc =first trace each file iltrc =last trace each file
For example, consider a down-hole survey with files w001.seg through w166.seg. The file order in each file is:
Channel Component 1 Vertical (down-hole) 2 Radial (down-hole) 3 Transverse (down-hole) 4 Vertical (ref. phone) 5 Radial (ref. phone) 6 Transverse (ref. phone)The reference phone is fixed at the surface and the down hole phone is logged from bottom to surface. We want to collect the transverse down-hole phone, channel 3, and output that to a single file. The command:
bmrg w 001 166 2 3 3
bmrg w 001 166 1 3 3
The data have not been rotated to a standard orientation. The T-component in this example drifts from 313 to 288 degrees azimuth as determined by PCA analysis (see BHOD 10.1.11). Program BTOR 12.2.2 applies the PCA results to data headers, and program BROT 12.2.4 actually does the rotation to a standard orientation (with respect to the source axis for horizontal component hammer blows).
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