psimage - To plot SUN rasterfiles on maps
psimage rasterfile -Wxlength[/ylength] [ -Cxpos/ypos ] [ -Gbr/g/b ] [
-Gfr/g/b ] [ -I ] [ -K ] [ -M ] [ -Nnxrep/nyrep] [ -O ] [ -P ] [
-U[dx/dy/][label] ] [ -V ] [ -Xx-shift ] [ -Yy-shift ] [ -ccopies ]
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. 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).
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,
-W Sets the size of the image in INCH. If not given ylength is set
to xlength * (ny/nx).
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
-Gf Sets foreground color (replace black pixel) for 1-bit image
-I Invert image before plotting (1-bit images only).
-K More PostScript code will be appended later [Default terminates
the plot system].
-M Convert color image to monochrome grayshades using the
-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
-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
-V Selects verbose mode, which will send progress reports to stderr
[Default runs "silently"].
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]
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
Man(1) output converted with