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Minus 5 minutes
Post 302907307 by drl on Friday 27th of June 2014 07:38:57 AM
06-27-2014
Hi, Robin.
I used YMMV in this sense:
-- Your mileage may vary definition of Your mileage may vary in the Free Online Encyclopedia.
I compiled and executed the code on Debian, but I didn't run it on other systems, hence
It was an alternate method, suggestion, proof for something other than the perl solution.
Sometimes I do test solutions on systems that are close to the OP's system, but in cases where I don't, YMMV applies.
Best wishes ... cheers, drl
I used YMMV in this sense:
Quote:
Your mileage may vary - (Standard disclaimer attached to EPA mileage ratings by American car manufacturers) A ritual warning often found in Unix freeware distributions and elsewhere. Translates roughly as "Hey, I tried to write this portably, but who *knows* what'll happen on your system?"
I compiled and executed the code on Debian, but I didn't run it on other systems, hence
Quote:
... who *knows* what'll happen on your system? ...
Sometimes I do test solutions on systems that are close to the OP's system, but in cases where I don't, YMMV applies.
Best wishes ... cheers, drl
This User Gave Thanks to drl For This Post:
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ppmtopgm(1) General Commands Manual ppmtopgm(1) NAME
ppmtopgm - convert a portable pixmap into a portable graymap SYNOPSIS
ppmtopgm [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b. Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original colors, not necessarily a way that looks like a black and white photograph. QUOTE
Cold-hearted orb that rules the night Removes the colors from our sight Red is gray, and yellow white But we decide which is right And which is a quantization error. SEE ALSO
pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 10 April 2000 ppmtopgm(1)