source: trunk/tutorial2/garnet3.html @ 595

Last change on this file since 595 was 595, checked in by toby, 11 years ago

# on 2002/04/12 21:34:08, toby did:
remove id info; update format

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  • Property rcs:date set to 2002/04/12 21:34:08
  • Property rcs:lines set to +19 -20
  • Property rcs:rev set to 1.3
  • Property rcs:state set to Exp
  • Property svn:keywords set to Author Date Revision Id
File size: 3.3 KB
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1<html>
2<head>
3   <title>EXPGUI Tutorial #3</title>
4</head>
5
6<style>
7A:link {text-decoration:none}
8A:vlink {text-decoration:none}
9</style>
10
11<BODY BGCOLOR="#FFFFFF"
12      topmargin="0" leftmargin="0" marginwidth="0" marginheight="0" 
13      text="#000000" link="#0033ff" vlink="#0033ff" alink="#0033ff">
14
15<?
16   include("/var/www/include/navigation.inc");
17   include("/var/www/include/utility.inc");
18?>
19<blockquote>
20
21<CENTER>
22<H1>EXPGUI Tutorial: Garnet  (part 3)</H1>
23</CENTER>
24<H1>
253. Add data (histogram) to the Experiment
26</H1>
27
28The next step in the tutorial is to add data. Note that
29GSAS uses the term
30histogram to refer to a powder diffraction data set.
31To add data, switch to the Histogram in EXPGUI pane and press the
32"Add New Histogram" button in the lower right.
33<img src="addhs1.gif" ALIGN=LEFT>
34This brings up the "add new histogram" dialog, to the left.
35Press on the upper "Select File" button for a dialog box to select
36a data file.
37
38<BR clear=left>
39<P><img src="addhs2a.gif" ALIGN=LEFT>
40Select the appropriate file, in this case garnet.raw and press
41the "Open" button.
42
43At this stage, different things can happen.
44If the file is not correctly formatted,
45<A HREF="../tutorial1/nickelnotes.html#reformat">a dialog will offer
46to convert the file to the correct format.</a>
47Also, in some cases, the data file specifies the name of the instrument
48parameter file. If so, that name will be loaded into the "Instrument
49Parameter file" box. If not, as in this case, the file must be selected
50by pressing the lower "Select File" button which creates a
51dialog box to select an instrument parameter file, similar
52to the one above.
53<BR clear=left>
54<P><img src="addhs3a.gif" ALIGN=LEFT>
55The appropriate instrument parameter file is then located and selected.
56Note that since only one bank of data is present in the file,
57bank 1 is selected automatically however one must know something
58about the instrument parameter file to know that bank 1 is the
59appropriate contents.
60Finally one must enter either the minimum d-space or
61maximum two-theta to be used from the data (note that
62this value can be changed later if need be from EXPEDT). A
63good way to do this is to use
64<A HREF="../tutorial1/nickelnotes.html#rawplot">RAWPLOT</A>
65to look at the data. This is done
66by pressing the "Run RAWPLOT" button at the
67lower right <A HREF="../tutorial1/nickelnotes.html#rawplot">(example).</A>
68The GSAS tutorial in the manual suggests using 159 for this refinement.
69
70When all input is complete, press Add to run program EXPTOOL and read the
71data into the .EXP file.
72
73<BR clear=left>
74<P><img src="addhs4a.gif" ALIGN=LEFT>
75The results from the EXPTOOL are shown in a separate box, so
76that errors can be noted. After OK is pressed, the histogram
77is now listed on the Histogram pane (see below).
78
79<BR clear=left>
80<P><img src="addhs5a.gif" ALIGN=LEFT>
81<BR clear=left>
82
83<P><BR>(.EXP Snapshot:
84<A HREF="ftp://ftp.ncnr.nist.gov/pub/cryst/gsas/tutorials/garnet3.exp">
85garnet3.exp
86</A>)
87
88<BR clear=left><HR>
89Previous step: <A HREF="garnet2.html">
90Add a phase to the Experiment</A>
91<BR>
92Next step: <A HREF="garnet4.html">
93Run POWPREF and GENLES</A>
94
95<HR>
96</blockquote>
97<P><font size=-1><A HREF="MAILTO:crystal@NIST.gov?subject=WWW page <?=$PHP_SELF?>">Comments, corrections or questions: crystal@NIST.gov</A></font><BR>
98<font size=-1><? lastmod(); ?> </font>
99<BR>$Revision: 595 $ $Date: 2009-12-04 23:08:48 +0000 (Fri, 04 Dec 2009) $
100</body>
101</html>
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