source: trunk/tutorial1/nickel4.html @ 930

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1<html>
2<head>
3   <title>EXPGUI Tutorial #4</title>
4</head>
5
6<style>
7A:link {text-decoration:none}
8A:vlink {text-decoration:none}
9</style>
10
11<BODY BGCOLOR="#FFFFFF"
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14
15<?
16   include("/var/www/include/navigation.inc");
17   include("/var/www/include/utility.inc");
18?>
19<blockquote>
20
21<CENTER>
22<H1>GSAS Nickel example using EXPGUI (part 4)</H1>
23</CENTER>
24<H1>
254. Change a profile parameter
26</H1>
27The next step in the tutorial is to change a profile parameter,
28in this case to widen the range of peaks that are fit. This is done
29by switching to the Profile pane and
30selecting each histogram by selecting it in the box
31to the left. Then change the "Peak cutoff" from 0.01 (1%) to 0.005
32(0.5%). Note that this change can slow down GSAS significantly, but
33is useful when the the signal-to-noise ratio is very good.
34<img src="profile1.gif">
35<BR clear=left>
36After the first histogram is modified, select the second histogram
37and modify the "Peak cutoff" there as well.
38<img src="profile2.gif">
39<BR>
40
41<BR clear=left>
42Previous step: <A HREF="nickel3.html">
43Add data (histograms) to the Experiment
44</A>
45<BR>
46Next step: <A HREF="nickel5.html">
47Run POWPREF
48</A>
49
50<HR>
51</blockquote>
52<P><font size=-1><A HREF="MAILTO:crystal@NIST.gov?subject=WWW page <?=$PHP_SELF?>">Comments, corrections or questions: crystal@NIST.gov</A></font><BR>
53<font size=-1><? lastmod(); ?> </font>
54<BR>$Revision: 930 $ $Date: 2009-12-04 23:14:35 +0000 (Fri, 04 Dec 2009) $
55</body>
56</html>
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