<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 98.1p1 release (March 2nd, 1998) originally by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>Session Parameters</TITLE> <META NAME="description" CONTENT="Session Parameters"> <META NAME="keywords" CONTENT="vol2"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <LINK REL="STYLESHEET" HREF="vol2.css"> <LINK REL="next" HREF="node468.html"> <LINK REL="previous" HREF="node463.html"> <LINK REL="up" HREF="node455.html"> <LINK REL="next" HREF="node468.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html7274" HREF="node468.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html7271" HREF="node455.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html7265" HREF="node466.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html7273" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html7275" HREF="node468.html">The Reduction Session</A> <B> Up:</B> <A NAME="tex2html7272" HREF="node455.html">Echelle Reduction</A> <B> Previous:</B> <A NAME="tex2html7266" HREF="node466.html">Standard orientation</A> <BR> <BR> <!--End of Navigation Panel--> <H1><A NAME="SECTION002790000000000000000"> Session Parameters</A> </H1> <P> Input data observed with the same configuration of the instrument and the parameters needed for the reduction define a session. <P> Session parameters are listed by the command <TT>SHOW/ECHELLE</TT>. It is recommended to use this command to control the actual status before executing any further reduction step. The command <TT>SHOW/ECHELLE</TT> displays only those parameters which must be set according to the options and methods chosen for the reduction. This enables to know exactly which parameters are required and available to tune the reduction. Current parameters are saved with the command <TT>SAVE/ECHELLE name</TT>, where <TT>name</TT> is the session name. This command will be used whenever you want to interrupt a session which then can be restarted at any other time. <P> Current parameter values are set to the default value with the command <TT>INIT/ECHELLE</TT>, or set to the values of a previously saved session with <TT>INIT/ECHELLE name</TT>. <TT>INIT/ECHELLE</TT> is required each time you start the reduction of a new set-up or instrument. <P> The command <TT>HELP/ECHELLE</TT> provides a short on-line information on the echelle keywords. The keyword name can be truncated to a significant root name. The information consists of a description, the default and actual value. Four different modes are available: <P> <UL> <LI>``HELP/ECH'' without parameter, displays a general help message about the echelle package. <LI>``HELP/ECH <keyword>'' gives a short description of the echelle keyword <keyword>. <LI>``HELP/ECH method'' provides a list of method keywords <LI>``HELP/ECH option'' provides a list of option keywords </UL> <P> Relevant session parameters can be defined for each command in the usual way: <BLOCKQUOTE> <TT>command/qualifier parameters</TT></BLOCKQUOTE>or can be defined in explicit form as<BLOCKQUOTE> <TT>SET/ECHELLE param=value [param=value ...]</TT></BLOCKQUOTE>where <TT>param</TT> is the parameter name and <TT>value</TT> is the assigned value. The assigned values will be maintained until you save them for later reference. Current parameter values are re-assigned either by <TT>INIT/ECHELLE</TT> or by another <TT>SET/ECHELLE</TT> command. <P> The direct assignment is possible as well, as in the following examples:<BLOCKQUOTE> <TT>WIDTH1 = 10 <BR> WLCLOOP(2) = 0.1 <BR> LINCAT = ``thar.tbl''</TT></BLOCKQUOTE> <P> <HR> <!--Navigation Panel--> <A NAME="tex2html7274" HREF="node468.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="icons.gif/next_motif.gif"></A> <A NAME="tex2html7271" HREF="node455.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="icons.gif/up_motif.gif"></A> <A NAME="tex2html7265" HREF="node466.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="icons.gif/previous_motif.gif"></A> <A NAME="tex2html7273" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="icons.gif/contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html7275" HREF="node468.html">The Reduction Session</A> <B> Up:</B> <A NAME="tex2html7272" HREF="node455.html">Echelle Reduction</A> <B> Previous:</B> <A NAME="tex2html7266" HREF="node466.html">Standard orientation</A> <!--End of Navigation Panel--> <ADDRESS> <I>Petra Nass</I> <BR><I>1999-06-15</I> </ADDRESS> </BODY> </HTML>