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                              PROCESS UADD
                              ------- ----
Document Date: 15 May 1996
PROCESS UADD adds user given points to every specified seismic trace.
The user may specify the start time of the addition.
A common use of process uadd is to subtract the average trace from all
the data traces in GPR (ground penetrating radar).
  Spatial interpolation is not available.

Each parameter list must be terminated with the word END.  The entire
set of UADD parameters must be terminated by the word END.
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PTS   - A list of points to be added to each seismic trace.  The 
        values must be separated by a blank, tab or new line.
        The points may be given on as many lines as necessary.
        When the values are given in an exponential format,
        positive exponents must have a + rather than a blank.
        Required. e.g. pts 1 2 3 4 5 6 7 8 9 10 11

FNO   - The first shot (or rp) to be added.  Shot (rp) numbers
        must increase monotonically.
        Preset = 0
LNO   - The last shot (rp) number to be added.  LNO must be
        larger than FNO in each list and must increase list to list.
        Preset = 999999999

STIME - The start time, in seconds, of the addition.  i.e. the time of
        the first point given in PTS.
        Preset = the delay of the trace . e.g. stime 1

END    - Terminates each parameter list.

Written and copyrighted (c) by:
Paul Henkart, Scripps Institution of Oceanography, May 1996
Go to the list of seismic processes.      Go to SIOSEIS introduction.