## NAME

          psimage - To plot SUN rasterfiles on maps

## SYNOPSIS

          psimage rasterfile -Wxlength[/ylength] [ -Cxpos/ypos ] [ -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).

          -W   Sets the size of the image in INCH.  If not given ylength is set
               to xlength * (ny/nx).

## OPTIONS

          No space between the option flag and the associated arguments.

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

          -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].

          -O   Selects Overlay plot mode [Default initializes a new plot
               system].

          -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 in inch [Default is (-0.75i/-
               0.75i)].  Optionally, append a label, or c (which will plot the
               command string.)

          -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) inch  [Default is
               (a1i,a1i) for new plots, (0,0) for overlays].  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 INCH, try

          psimage scanned_face.ras -W8/10 > 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