Opcje wyszukiwania podręcznika man:
Lista stron man zaczynających się od znaku:
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   ALPHA   NUM   OTHER   ALL
pnmrotate(1)                General Commands Manual               pnmrotate(1)

       pnmrotate - rotate a portable anymap by some angle

       pnmrotate [-noantialias] angle [pnmfile]

       Reads  a  portable  anymap as input.  Rotates it by the specified angle
       and produces a portable anymap as output.  If  the  input  file  is  in
       color,  the  output  will  be too, otherwise it will be grayscale.  The
       angle is in degrees (floating point), measured  counter-clockwise.   It
       can  be negative, but it should be between -90 and 90.  Also, for rota-
       tions greater than 45 degrees you may get better results if  you  first
       use  pnmflip to do a 90 degree rotation and then pnmrotate less than 45
       degrees back the other direction

       The rotation algorithm is Alan Paeth's three-shear method.  Each  shear
       is implemented by looping over the source pixels and distributing frac-
       tions to each of the destination pixels.  This has  an  "anti-aliasing"
       effect  -  it  avoids  jagged edges and similar artifacts.  However, it
       also means that the original colors or gray levels  in  the  image  are
       modified.   If  you  need to keep precisely the same set of colors, you
       can use the -noantialias flag.  This does the shearing by moving pixels
       without  changing  their  values.   If you want anti-aliasing and don't
       care about the precise colors, but still need  a  limited  *number*  of
       colors, you can run the result through ppmquant.

       All flags can be abbreviated to their shortest unique prefix.

       "A  Fast Algorithm for General Raster Rotation" by Alan Paeth, Graphics
       Interface '86, pp. 77-81.

       pnmshear(1), pnmflip(1), pnm(5), ppmquant(1)

       Copyright (C) 1989, 1991 by Jef Poskanzer.

                                12 January 1991                   pnmrotate(1)

Czas wygenerowania: 0.00012 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

Copyright © 2003-2021
Hosted by Hosting