Документ взят из кэша поисковой машины. Адрес
оригинального документа
: http://xray.sai.msu.ru/~ivan/gmt/man/gmtconvert.html
Дата изменения: Fri Mar 19 17:19:43 1999 Дата индексирования: Tue Oct 2 08:20:41 2012 Кодировка: Поисковые слова: п п п п п п п п п п п п п п п п п п п п п п |
gmtconvert - Convert between ASCII and binary 1-D tables
gmtconvert [ inputfiles] [ -H[nrec] ] [ -M[flag] ] [ -V ] [ -: ] [ -bi[s]n ] [ -bo[s] ]
gmtconvert reads its standard input [or inputfiles] and writes out the information to standard output. Its main purpose is to convert between binary and ASCII data tables. Input (and hence output) may have multiple subheaders if -M is selected. datafile(s) ASCII (or binary, see -bi) file(s) holding a number of data columns.
-H Input file(s) has Header record(s). Number of header records can be changed by editing your .gmtdefaults file. If used, GMT default is 1 header record. -M Multiple segment file(s). Segments are separated by a special record. For ASCII files the first character must be flag [Default is '>']. For binary files all fields must be NaN. -: Toggles between (longitude,latitude) and (latitude,longitude) input/output. [Default is (longitude,latitude)]. -bi Selects binary input. Append s for single precision [Default is double]. Append n for the number of columns in the binary file(s). -bo Selects binary output. Append s for single precision [Default is double].
To convert the binary file test.b (single precision) with 4 columns to ASCII, try gmtconvert test.b -bis4 > test.dat To convert the multiple segment ASCII table test.d to a double precision binary file, try gmtconvert test.d -M -bo > test.b
When GMT is installed under a non-UNIX operating system, such as Windows 95/98/NT or the Cygnus or DJGPP ports of GNU to Windows, binary output to stdout will not work. This is because stdout is done in TEXT mode (instead of BINARY) mode; on Unix systems there is only one mode and no problem. The workaround on Win32 platforms is to append :bname to the -bo which forces an internal redirection of output to the file bname. See GMT Technical Reference Appendix L for more details.
gmt, minmax