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pnmtops
Section: User Commands (1)Updated: 25 May 2001
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NAME
pnmtops - convert portable anymap to PostScriptSYNOPSIS
pnmtops [-scale s] [-dpi n] [-imagewidth n] [-imageheight n] [-width n] [-height n] [-equalpixels] [-turn|-noturn] [-rle|-runlength] [-center|-nocenter] [pnmfile]DESCRIPTION
Reads a Netpbm image as input. Produces Encapsulated PostScript as output.If the input file is in color (PPM), pnmtops generates a color PostScript file. Some PostScript interpreters can't handle color PostScript. If you have one of these you will need to run your image through ppmtopgm first.
If you specify no output dimensioning options, the output image is dimensioned such that 72 pixels of the input image generate one inch of output image. Except if that would exceed the default page size (8.5 inches by 11 inches), the output image is shrunk enough to fit.
Use -imagewidth, -imageheight, -equalpixels, -width, -height, and -scale to adjust that.
OPTIONS
- -imagewidth
-
-imageheight
Tells how wide and high you want the image on the page, in inches.
The aspect ratio of the image is preserved, so if you specify both of these,
the image on the page will be the largest image that will fit within the
box of those dimensions.
If these dimensions are greater than the page size, you get Postscript output that runs off the page.
You cannot use imagewidth or imageheight with -scale or -equalpixels.
- -equalpixels
-
This option causes the output image to have the same number of pixels
as the input image. So if the output is 600 dpi and your image is 3000
pixels wide, the output image would be 5 inches wide.
You cannot use -equalpixels with -imagewidth, -imageheight, or -scale.
- -scale
-
tells how big you want the image on the page. The value is the number of
inches of output image that you want 72 pixels of the input to generate.
If the size so specified does not fit on the page (as measured either by the -width and -height options or the default page size of 8.5 inches by 11 inches), pnmtops ignores the -scale options, issues a warning, and scales the image to fit on the page.
- -dpi
-
This option specifies the dots per inch of your output device. The
default is 300 dpi. In theory PostScript is device-independent and
you don't have to worry about this, but in practice its raster
rendering can have unsightly bands if the device pixels and the image
pixels aren't in sync.
Also this option is crucial to the working of the equalpixels option.
- -width
-
-height
These options specify the dimensions of the page on which the output is
to be printed. This affects the size of the output image.
The page size has no effect, however, when you specify the -imagewidth, -imageheight, or -equalpixels options.
The default is 8.5 inches by 11 inches.
- -turn
- -noturn These options control whether the image gets turned 90 degrees. Normally, if an image is wider than it is tall, it gets turned automatically to better fit the page. If you specify the -turn option, pnmtops turns the image no matter what its shape; If you specify -noturn, pnmtops does not turn it no matter what its shape.
- -rle
- -runlength These identical options specify run-length compression. This may save time if the host-to-printer link is slow; but normally the printer's processing time dominates, so -rle makes things slower.
- -center
- -nocenter By default, pnmtops centers the image on the output page. You can specify this explicitly with the -center option, or cause pnmtops to instead put the image against the upper left corner of the page with the -nocenter option. The latter is useful for programs which can include PostScript files, but can't cope with pictures which are not positioned in the upper left corner.
All options can be abbreviated to their shortest unique prefix.
SEE ALSO
pnm(5), gs(1), psidtopgm(1), pstopnm(1), pbmtolps(1), pbmtoepsi(1), pbmtopsg3(1), ppmtopgm(1),AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer.Modified November 1993 by Wolfgang Stuerzlinger, wrzl@gup.uni-linz.ac.at
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