Expanded description
| Topic |
Description |
| Name |
samplespt |
| Synopsis |
/infobank/programs/dsmpl/samplespt/samplespt.for |
| Description |
Program to sample shotpoints to every Nth value.
|
| Comments |
Writes the first entry of a line.
Writes every even Nth numbered shotpoint entry interpolating,
if necessary.
Writes the last shotpt entry of a line.
Repeats, if there are multiple lines.
|
| Prompts |
Enter input file name:
as DRS standard format for edited shot point file:
(i4,i3, 3(i2), i1, t16, a5, t22, i5)
(iyr,ida, ihr, imin, isec, iten, aline, ishotpt)
or FIXTBL format:
(i4,i3, 3(i2), i1, t16, a5, t29, i5)
(t22, i5) are CDP's
Enter output file name:
Output format is the same as the input format.
The data is desampled such that, if the desired rate is 10,
and the shot point data looks like:
. 31
. 35
. 37
. 41
. 47
. 50
. 52
The output would be:
. 31
. 40
. 50
. 52
It throws out consecutive duplicate shotpt numbers.
Enter sample INTEGER rate:
|
| Subroutines |
vesc (external include)
openem (external shareable)
howlong (external shareable)
converttime (external shareable)
forerror (external shareable)
|
| Author |
Carolyn Degnan
Changed input/output format to reflect changes in standard: line number
changed from a3 to a5 Ed Maple 5/21/85
Added check so that before writing the last shot of a line, it checks that
that it hasn't already been written for falling on the even shot sample rate
Carolyn Degnan 4/15/88
Removed calls to percentage
Michael Hamer 5/03/99
|
| Reads |
read (90, fmt, iostat = ierr, err = 3, end = 4)
* iyr, ida, ihr, imin, isec, iten, aline, ishot
|
| Writes |
write (91, fmt) iyr, ida1, ihr1, imin1, isec1, iten1,
* aline1, ishot1
write (91, fmt) iyr, idanu, ihrnu, iminnu, isecnu,
* itennu, aline, jlimit
write (91, fmt) iyr, ida, ihr, imin, isec, iten, aline, ishot
write (91, fmt) iyr, ida, ihr, imin, isec, iten, aline, ishot
write (91, fmt) iyr, ida1, ihr1, imin1, isec1, iten1,
* aline1, ishot1
write (6, 21) iread, iwrite, numrderr, numduperr
|
| Calls |
call openem (1, -1)
call converttime ('COMPRESS', ida1, ihr1, imin1, isec1, iten1,
* itmthis, ErrorFlag)
call converttime ('COMPRESS', ida1, ihr1, imin1, isec1, iten1,
* itm1, ErrorFlag)
call converttime ('COMPRESS', ida, ihr, imin, isec, iten, itm2,
* ErrorFlag)
call converttime ('EXPAND', idanu, ihrnu, iminnu, isecnu,
* itennu, itmnu, ErrorFlag)
call converttime ('COMPRESS', ida, ihr, imin, isec, iten, itm2,
* ErrorFlag)
call converttime ('COMPRESS', ida, ihr, imin, isec, iten, itm2,
* ErrorFlag)
call forerror (ierr)
|
|
