NAME

       psimage - To plot SUN rasterfiles on maps

SYNOPSIS

       psimage  rasterfile  [  -Wxlength[/ylength]  |  -Edpi  ]  [  -Cxpos/ypos  ]  [  -Fpen  ] [
       -G[f|b]r/g/b ] [ -I ] [ -K ] [ -M ] [ -Nnxrep/nyrep] [ -O ] [ -P ] [ -U[dx/dy/][label] ] [
       -V ] [ -Xx-shift ] [ -Yy-shift ] [ -ccopies ]

DESCRIPTION

       psimage  reads  a  1, 8, 24, or 32-bit Sun rasterfile and plots it on a map.  Image can be
       scaled arbitrarily, and 1-bit images can be (1) inverted, i.e., black pixels (on)  becomes
       white  (off)  and  vice  versa,  or  (2)  colorized, by assigning different foreground and
       background colors, and (3) made transparent where one of back- or  foreground  is  painted
       only.  As  an  option,  the user may choose to convert colorimages to grayscale using TV's
       YIQ-transformation.'  The user  may  also  choose  to  replicate  the  image  which,  when
       preceeded  by appropriate clip paths, may allow larger custom-designed fill patterns to be
       implemented (the -Gp mechanism offered in most GMT programs is limited to rasters  smaller
       than 146 by 146).

       rasterfile
              This  must  be  a  Sun  rasterfile.  Depth  can  be 1, 8, 24, or 32-bit. Old-style,
              Standard, Run-length-encoded, and RGB Sun rasterfiles are supported.  Other  raster
              formats  can  be  converted  to  Sun format via a variety of public-domain software
              (e.g., imconv, xv).

       -E     Sets the dpi of the image in dots pr inch, or use -W.

       -W     Sets the size of the image. If not given ylength  is  set  to  xlength  *  (ny/nx).
              Alternatively, use -E.

OPTIONS

       No space between the option flag and the associated arguments.

       -C     Sets position of lower left corner of image [0/0].

       -F     Draws a rectangular frame around the image with the given pen [no frame].

       -Gb    Sets  background  color (replace white pixel) for 1-bit image templates.  Use - for
              transparency (and set -Gf to the desired color).

       -Gf    Sets foreground color (replace black pixel) for 1-bit image templates.  Use  -  for
              transparency (and set -Gb to the desired color).

       -I     Invert image before plotting (1-bit images only). This is what is done when you use
              -GP in other GMT programs.

       -K     More PostScript code will be appended later [Default terminates the plot system].

       -M     Convert  color  image  to  monochrome  grayshades  using  the   (television)   YIQ-
              transformation.

       -N     Replicate the image nxrep in x and nyrep in y [Default is 1/1].

       -bo    Selects binary output. Append s for single precision [Default is double].

       -P     Selects Portrait plotting mode [GMT Default is Landscape, see gmtdefaults to change
              this].

       -U     Draw Unix System time stamp on plot. User may specify where the lower  left  corner
              of  the  stamp  should  fall  on  the  page  relative to lower left corner of plot.
              Optionally, append a label, or c (which will plot the  command  string.).  The  GMT
              parameters   UNIX_TIME  and  UNIX_TIME_POS  can  affect  the  appearance;  see  the
              gmtdefaults man page for details.

       -V     Selects verbose mode, which will send progress  reports  to  stderr  [Default  runs
              "silently"].

       -X -Y  Shift origin of plot by (x-shift,y-shift).  Prepend a for absolute coordinates; the
              default (r) will reset plot origin.

       -c     Specifies the number of plot copies. [Default is 1]

EXAMPLES

       To plot the image contained in the 8-bit rasterfile scanned_face.ras, scaling it to  8  by
       10 cm, try

       psimage scanned_face.ras -W8c/10c > image.ps

       To  replicate  the  image  template  1_bit.ras  over  a 5 by 5 inch area, colorize it, and
       setting each piece to be 1 by 1 cm, try

       psimage 1_bit.ras -Gb200/150/100 -Gf100/50/30 -N5i/5i -W1c > image.ps

SEE ALSO

       gmt(1gmt)

                                            1 Jan 2004                                 PSIMAGE(l)