PCH's notes on cross-dip processing

Generate a table with all the feathering angles, crossline offsets,
and midpoint coordinates.  Execute script as:     
syn 1001 2660 > l     where script syn is:
#!/bin/csh -f
set FNO = $1
set LNO = $2

sioseis << eof
procs syn geom header prout end
syn
  fno $FNO lno $LNO ntrcs 240 secs 1 values 1 2 3 4 end
end
 geom
   fs $FNO ls $LNO
    type 13 dbrps 6.25 rpadd 300
    navfil ODKM03-B-00-003.p190 end
 end
 header
    fno 0 lno 999999 ftr 0 ltr 999
    r58 = i48 / 10.
    r59 = l19 + l21
    r59 = r59 / 2.
    r60 = l20 + l22
    r60 = r60 / 2.
    end
end
 prout
     fno 0 lno 999999 ftr 1 ltr 240
     indices l3 l4 l6 l10 r58 i49 r59 r60
     format (4(2x,F6.0),1x,F5.0,2x,F6.0,3(1x,f11.1))
     end
 end
 end
eof

vi l and remove sioseis stuff

plot(l(240:240:398400,1),l(240:240:398400,5)
title('Far trace feathering angle')
ylabel('degrees')
xlabel('shot number')
under matlab file, print as color ps level 2
with photoshop convert to jpeg
plot(l(240:240:398400,1),l(240:240:398400,6)
title('Far trace cross-line offset')
ylabel('meters')
xlabel('shot number')
under matlab file, print as color ps level 2
with photoshop convert to jpeg
plot(l(240:398400,7),l(240:398400,8)
title('midpoint coordinates')
ylabel('Y')
xlabel('X')
under matlab file, print as color ps level 2
with photoshop convert to jpeg