Imagem:Log-factorial.PNG
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Log-factorial.PNG (600 × 464 pixel, tamanho do ficheiro: 24 KB, tipo MIME: image/png)
[edit] Sumário
Image created on en.wiki by user MarkSweep
Plot of the natural logarithm of the factorial function (strictly speaking it's the gamma function)
Created with the following gnuplot script:
set samples 1001 set terminal postscript enhanced color solid lw 2 "Times-Roman" 27 set output set key left set grid plot [0:20000] lgamma(x+1) title "ln(x!)"
Shell script for conversion to PNG format:
#! /bin/sh set -e TMPFILE=`mktemp gp2png-temp.XXXXXX` gnuplot $1 | gs -q -dNOPAUSE -dBATCH -sDEVICE=ppmraw -r200 -sOutputFile=- -f - | pnmrotate -90 | pnmscale 0.27272727272727 | pnmtopng > $TMPFILE pngcrush -brute $TMPFILE `basename $1 .gp`.png rm -f $TMPFILE
[edit] Licensing
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This work is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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