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diff --git a/pamtofits.html b/pamtofits.html new file mode 100644 index 00000000..cebb38e0 --- /dev/null +++ b/pamtofits.html @@ -0,0 +1,91 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML><HEAD><TITLE>Pamtofits User Manual</TITLE></HEAD> +<BODY> +<H1>pamtofits</H1> +Updated: 25 September 2005 +<BR> +<A HREF="#index">Table Of Contents</A> + +<A NAME="lbAB"> </A> +<H2>NAME</H2> + +pamtofits - convert a Netpbm image into FITS format + +<A NAME="lbAC"> </A> +<H2>SYNOPSIS</H2> + +<B>pamtofits</B> +[<B>-max</B> <I>f</I>] +[<B>-min</B> <I>f</I>] +[<I>pamfile</I>] + +<A NAME="lbAD"> </A> +<H2>DESCRIPTION</H2> + +<p>This program is part of <a href="index.html">Netpbm</a>. + +<p><b>pamtofits</b> reads a PNM or PAM image as input and produces a FITS +(Flexible Image Transport System) file as output. The resolution of +the output file is either 8 bits/pixel, or 16 bits/pixel, depending on +the value of maxval in the input file. If the input file is a PBM or +PGM image, the output file consists of a single plane image (NAXIS = +2). If instead the input file is a PPM image, the output file will +consist of a three-plane image (NAXIS = 3, NAXIS3 = 3). + +<p>You can find a full description of the FITS format in Astronomy +& Astrophysics Supplement Series 44 (1981), page 363. + +<A NAME="lbAE"> </A> +<H2>OPTIONS</H2> + +<p><b>-min</b> and <b>-max</b> tell <b>pamtofits</b> what "physical +values" zero and maxval sample values, respectively, in the input +image represent. Physical values are a FITS concept. <b>pamtofits</b> +sets up the <b>BSCALE</b> and <b>BZERO</b> FITS header cards to indicate +this information. + +<p>The default for <b>-min</b> is 0 and for <b>-max</b> is the maxval, +which means if you don't specify these options, the FITS physical values +are in fact the original Netpbm sample values. + +<p><b>pamtofits</b> always sets up the FITS header <b>DATAMIN</b> and +<b>DATAMAX</b> cards to indicate that the highest physical value in +the image is the one corresponding to the Netpbm maxval and the lowest is +that corresponding to Netpbm zero. This isn't really how those cards are +supposed to be used, since the input image doesn't necessarily contain +the full possible range of sample values. It is a conservative +approximation. + +<h2 id="history">HISTORY</h2> + +<p><b>pamtofits</b> was originally <b>pnmtofits</b> and did not handle +PAM input. It was extended and renamed in Netpbm 10.30 (October 2005). + +<A NAME="lbAF"> </A> +<H2>SEE ALSO</H2> + +<A HREF="fitstopnm.html">fitstopnm</A>, +<A HREF="pam.html">pam</A> + +<A NAME="lbAG"> </A> +<H2>AUTHOR</H2> + +Copyright (C) 1989 by Wilson H. Bent (<A +HREF="mailto:whb@hoh-2.att.com">whb@hoh-2.att.com</A>), with +modifications by Alberto Accomazzi (<A +HREF="mailto:alberto@cfa.harvard.edu">alberto@cfa.harvard.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">OPTIONS</A> +<LI><A HREF="#history">HISTORY</A> +<LI><A HREF="#lbAF">SEE ALSO</A> +<LI><A HREF="#lbAG">AUTHOR</A> +</UL> +</BODY> +</HTML> |