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| author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-12-25 03:06:05 +0000 |
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| committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-12-25 03:06:05 +0000 |
| commit | 1017cbebe5d5edd859e0fddad0a8600f509f4821 (patch) | |
| tree | 78bdf336648566f7a7d55f42837357dea3dd674c /ppmtoicr.html | |
| parent | 16f2ac126651015a376eba864a3a35f738b0b25a (diff) | |
| download | netpbm-mirror-1017cbebe5d5edd859e0fddad0a8600f509f4821.tar.gz netpbm-mirror-1017cbebe5d5edd859e0fddad0a8600f509f4821.tar.xz netpbm-mirror-1017cbebe5d5edd859e0fddad0a8600f509f4821.zip | |
Place user guide into Subversion repository
git-svn-id: http://svn.code.sf.net/p/netpbm/code/userguide@181 9d0c8265-081b-0410-96cb-a4ca84ce46f8
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1 files changed, 147 insertions, 0 deletions
diff --git a/ppmtoicr.html b/ppmtoicr.html new file mode 100644 index 00000000..b58e2943 --- /dev/null +++ b/ppmtoicr.html @@ -0,0 +1,147 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Ppmtoicr User Manual</TITLE></HEAD> +<BODY> +<H1>ppmtoicr</H1> +Updated: 30 July 1990 +<BR> +<A HREF="#index">Table Of Contents</A> + +<A NAME="lbAB"> </A> +<H2>NAME</H2> + +ppmtoicr - convert a PPM image into NCSA ICR format + +<A NAME="lbAC"> </A> +<H2>SYNOPSIS</H2> + +<B>ppmtoicr</B> + +[<B>-windowname</B> <I>name</I>] + +[<B>-expand</B> <I>expand</I>] + +[<B>-display</B> <I>display</I>] + +[<B>-rle</B>] + +[<I>ppmfile</I>] + +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><b>ppmtoicr</b> reads a PPM file as input. Produces an NCSA Telnet +Interactive Color Raster graphic file as output. + +If <I>ppmfile</I> is not supplied, <b>ppmtoicr</b> reads from Standard +Input. + +<P>Interactive Color Raster (ICR) is a protocol for displaying raster +graphics on workstation screens. The protocol is implemented in NCSA +Telnet for the Macintosh version 2.3. The ICR protocol shares +characteristics of the Tektronix graphics terminal emulation protocol. +For example, escape sequences are used to control the display. + +<P><b>ppmtoicr</b> will output the appropriate sequences to create a +window of the dimensions of the input pixmap, create a colormap of up +to 256 colors on the display, then load the picture data into the +window. + +<P>Note that there is no icrtoppm tool - this transformation is one +way. + +<A NAME="lbAE"> </A> +<H2>OPTIONS</H2> + +<DL COMPACT> +<DT><B>-windowname</B> <I>name</I> + +<DD>Output will be displayed in <I>name</I> (Default is to use +<I>ppmfile</I> or "untitled" if the input is from Standard +Input). + +<DT><B>-expand</B> <I>expand</I> + +<DD>Output will be expanded on display by factor <I>expand</I> (For +example, a value of 2 will cause four pixels to be displayed for every +input pixel.) + +<DT><B>-display</B> <I>display</I> + +<DD>Output will be displayed on screen numbered <I>display</I> + +<DT><B>-rle</B> + +<DD>Use run-length encoded format for display. (This will nearly +always result in a quicker display, but may skew the colormap). + +</DL> + + +<A NAME="lbAF"> </A> +<H2>EXAMPLES</H2> + +To display a PPM file named <b>ppmfile</b> using the protocol: + +<PRE> + ppmtoicr ppmfile +</PRE> + +This will create a window named <I>ppmfile</I> on the display with the +correct dimensions for <I>ppmfile</I>, create and download a colormap +of up to 256 colors, and download the picture into the window. You +may achieve the same effect with the following sequence: + +<PRE> + ppmtoicr ppmfile > filename + cat filename +</PRE> + +<p>To display a GIF file using the protocol in a window titled after the +input file, zoom the displayed image by a factor of 2, and run-length +encode the data: + +<PRE> + giftopnm giffile | ppmtoicr -w giffile -r -e 2 +</PRE> + +<A NAME="lbAG"> </A> +<H2>LIMITATIONS</H2> + +<P>The protocol uses frequent fflush() calls to speed up display. If +you save the output to a file for later display via <B>cat</B>, +<b>ppmtoicr</b> will draw much more slowly. In either case, +increasing the blocksize limit on the display will speed up +transmission substantially. + +<A NAME="lbAH"> </A> +<H2>SEE ALSO</H2> + +<B><A HREF="ppm.html">ppm</A></B> + +<P>NCSA Telnet for the Macintosh, University of Illinois at +Urbana-Champaign (1989) + +<A NAME="lbAI"> </A> +<H2>AUTHOR</H2> + +Copyright (C) 1990 by Kanthan Pillay (<A +HREF="mailto:svpillay@Princeton.EDU">svpillay@Princeton.EDU</A>), +Princeton University Computing and Information Technology. + +<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">OPTIONS</A> +<LI><A HREF="#lbAF">EXAMPLES</A> +<LI><A HREF="#lbAG">LIMITATIONS</A> +<LI><A HREF="#lbAH">SEE ALSO</A> +<LI><A HREF="#lbAI">AUTHOR</A> +</UL> +</BODY> +</HTML> |