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- pnmscale(1) AMIGA (12 January 1991) pnmscale(1)
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- NAME
- pnmscale - scale a portable anymap
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- SYNOPSIS
- pnmscale s [pnmfile]
- pnmscale -xsize|-width|-ysize| -height s [pnmfile]
- pnmscale -xscale|-yscale s [pnmfile]
- pnmscale -xscale|-xsize|-width s -yscale|-ysize|-height s
- [pnmfile]
- pnmscale -xysize x y [pnmfile]
- pnmscale -pixels n [pnmfile]
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- DESCRIPTION
- Reads a portable anymap as input. Scales it by the
- specified factor or factors and produces a portable anymap
- as output. If the input file is in color, the output will
- be too, otherwise it will be grayscale. You can both
- enlarge (scale factor > 1) and reduce (scale factor < 1).
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- You can specify one dimension as a pixel size, and the other
- dimension will be scaled correspondingly.
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- You can specify one dimension as a scale, and the other
- dimension will not be scaled.
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- You can specify different sizes or scales for each axis.
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- You can use the special -xysize flag, which fits the image
- into the specified size without changing the aspect ratio.
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- Or, you can use the -pixels flag, which fits the image into
- the specified number of pixels without changing the aspect
- ratio.
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- All flags can be abbreviated to their shortest unique
- prefix.
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- If you enlarge by a factor of 3 or more, you should probably
- add a pnmsmooth step; otherwise, you can see the original
- pixels in the resulting image.
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- SEE ALSO
- pbmreduce(1), pnmenlarge(1), pnmsmooth(1), pnm(5)
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- AUTHOR
- Copyright (C) 1989, 1991 by Jef Poskanzer.
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- Page 1 (printed 3/1/94)
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