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diff --git a/asciitopgm.html b/asciitopgm.html new file mode 100644 index 00000000..406cc5a6 --- /dev/null +++ b/asciitopgm.html @@ -0,0 +1,85 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Asciitopgm User Manual</TITLE></HEAD> +<BODY> +<H1>asciitopgm</H1> +Updated: 05 September 2003 +<BR> + +<A HREF="#index">Table Of Contents</A> + +<A NAME="ixAAB"></A> +<A NAME="lbAB"> </A> +<H2>NAME</H2> +asciitopgm - convert ASCII graphics into a PGM + +<A NAME="lbAC"> </A> +<H2>SYNOPSIS</H2> + +<B>asciitopgm</B> +[<b>-d</b> <i>divisor</I>] +<I>height</i> +<i>width</I> +[<I>asciifile</I>] + +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><B>asciitopgm</b> reads ASCII data as input and produces a PGM image +with pixel values which are an approximation of the +"brightness" of the ASCII characters, assuming +black-on-white printing. In other words, a capital M is very dark, a +period is very light, and a space is white. + +<p>Obviously, <b>asciitopgm</b> assumes a certain font in assigning +a brightness value to a character. + +<p><b>asciitopgm</b> considers ASCII control characters to be all +white. It assigns special brightnesses to lower case letters which +have nothing to do with what they look like printed. +<b>asciitopgm</b> takes the ASCII character code from the lower 7 bits +of each input byte. But it warns you if the most signficant bit of +any input byte is not zero. + +<p>Input lines which are fewer than <I>width</I> characters are +automatically padded with spaces. + +<P>The <i>divisor</I> value is an integer (decimal) by which the +blackness of an input character is divided; the default value is 1. +You can use this to adjust the brightness of the output: for example, +if the image is too bright, increase the divisor. + +<P>In keeping with (I believe) Fortran line-printer conventions, +input lines beginning with a <b>+</b> (plus) character are assumed to +"overstrike" the previous line, allowing a larger range of +gray values. + +<P>If you're looking for something that creates an image of text, +with that text specified in ASCII, that is something quite different. +Use <b>pbmtext</b> for that. + +<A NAME="lbAE"> </A> + +<H2>SEE ALSO</H2> + +<A HREF="pbmtoascii.html">pbmtoascii</A>, +<A HREF="pbmtext.html">pbmtext</A>, +<A HREF="pgm.html">pgm</A> + +<A NAME="lbAG"> </A> +<H2>AUTHOR</H2> + +Wilson H. Bent. Jr. (<A HREF="mailto:whb@usc.edu">whb@usc.edu</A>) + +<HR> +<A NAME="index"> </A><H2>Table Of Contents</H2> +<UL> +<LI><A HREF="#lbAB">NAME</A> +<LI><A HREF="#lbAC">SYNOPSIS</A> +<LI><A HREF="#lbAD">DESCRIPTION</A> +<LI><A HREF="#lbAE">SEE ALSO</A> +<LI><A HREF="#lbAG">AUTHOR</A> +</UL> +</BODY> +</HTML> |