1Spottopgm User Manual(0)                              Spottopgm User Manual(0)
2
3
4

NAME

6       spottopgm - convert SPOT satellite images to a PGM image
7
8

SYNOPSIS

10       spottopgm [-1|-2|-3] [Firstcol Firstline Lastcol Lastline] inputfile
11
12

DESCRIPTION

14       This program is part of Netpbm(1).
15
16       spottopgm converts the named inputfile to PGM format, defaulting to the
17       first color and the whole SPOT image unless you specify otherwise  with
18       the options.
19
20

OPTIONS

22       In  addition  to  the options common to all programs based on libnetpbm
23       (most notably -quiet, see
24        Common Options ⟨index.html#commonoptions⟩ ), spottopgm recognizes  the
25       following command line options:
26
27
28
29       -1
30
31       -2
32
33       -3     Extract  the  given  color  from the SPOT image.  The colors are
34              infrared, visible light, and ultraviolet, although I don't  know
35              which  corresponds  to  which number.  If the image is in color,
36              spottopgm announces this on Standard Error.  The  default  color
37              is 1.
38
39
40
41

PARAMETERS

43       Firstcol Firstline Lastcol Lastline
44              Extract  the specified rectangle from the SPOT image.  Most SPOT
45              images are 3000 lines long and 3000 or more columns wide. Unfor‐
46              tunately,  the  SPOT  format  only  gives  the width and not the
47              length.  The width is printed on standard  error.   The  default
48              rectangle is the width of the input image by 3000 lines.
49
50
51
52

LIMITATIONS

54       spottopgm  doesn't  determine  the length of the input file; this would
55       involve two passes over the input file.   It  defaults  to  3000  lines
56       instead.
57
58       spottopgm  could  extract  a three-color image (as a PPM), but I didn't
59       feel like making the program more complicated than it is now.  Besides,
60       there  is  no  one-to-one  correspondence  between red, green, blue and
61       infrared, visible and ultraviolet.
62
63       I've had only a limited number of SPOT images to play with, and  there‐
64       fore wouldn't guarantee that this will work on any other images.
65
66

AUTHOR

68       Warren Toomey wkt@csadfa.cs.adfa.oz.au
69
70

SEE ALSO

72       pgm(1)
73

DOCUMENT SOURCE

75       This  manual  page was generated by the Netpbm tool 'makeman' from HTML
76       source.  The master documentation is at
77
78              http://netpbm.sourceforge.net/doc/spottopgm.html
79
80netpbm documentation             22 July 2004         Spottopgm User Manual(0)
Impressum