source: trunk/tutorial2/RCS/garnet5.html,v @ 932

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25desc
26@Garnet tutorial
27@
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34text
35@<html>
36<head>
37   <title>EXPGUI Tutorial #5</title>
38</head>
39
40<style>
41A:link {text-decoration:none}
42A:vlink {text-decoration:none}
43</style>
44
45<BODY BGCOLOR="#FFFFFF"
46      topmargin="0" leftmargin="0" marginwidth="0" marginheight="0"
47      text="#000000" link="#0033ff" vlink="#0033ff" alink="#0033ff">
48
49<?
50   include("/var/www/include/navigation.inc");
51   include("/var/www/include/utility.inc");
52?>
53<blockquote>
54
55<CENTER>
56<H1>EXPGUI Tutorial: Garnet (part 5)</H1>
57</CENTER>
58<H1>
595. Plot data using POWPLOT or LIVEPLOT
60</H1>
61At this point in the GSAS tutorial in the manual,
62program POWPLOT is used to plot the diffraction data. This
63is done by pressing POWPLOT button in the button bar, or
64by pressing the POWPLOT menu item in either the Powder menu
65or the Graphs menu. The input supplied to POWPLOT and the
66results are the same as what is shown in the menu, so this will
67not be shown.
68<P>
69EXPGUI does offer another way to display diffraction data, LIVEPLOT.
70Similar to the way POWPREF was run in the previous step,
71LIVEPLOT can be started by pressing LIVEPLOT button in the button bar,
72or by pressing the LIVEPLOT menu item in the Graphs menu.
73<P>
74<a name="diff">
75<img src="lp1.gif"></a>
76<BR clear=left>
77Since two cycles of refinement have been run,
78LIVEPLOT generates a plot similar to the one above, showing the
79observed data (black X's), simulated (computed) data (red line), the fitted
80background (green line) and the difference between the observed and computed
81data (lower black line),
82<BR clear=left><P>
83<img src="lp2.gif">
84<BR clear=left>
85Note that the region shown in the plot
86can be changed by clicking with the left
87mouse button to outline a region, as shown above.
88When the left mouse button is pressed a second time, the graph is "zoomed in,"
89as is shown below.
90To "zoom out" to the previous region, press the right mouse button.
91<BR clear=left><P>
92<img src="lp3.gif">
93<BR clear=left><P>
94<img src="lp4.gif">
95<BR clear=left>
96Reflection positions can be marked, using the File/Tickmarks menu.
97Likewise, reflection indices can be displayed by pressing the "h" (or "H") key in the
98position of the reflection to be labeled.
99The size and time before
100the reflection labels are removed is determined by values in the Options/HKL labeling menu.
101<BR clear=left><P>
102There are many other options available in LIVEPLOT in the Options menu. The
103Appearance and location of the tickmarks can be set,
104for example, using the "Options/Configure Tickmarks/Auto locate option
105causes the tickmarks to be shown as
106<A HREF="garnet6.html#ticks">small lines under each reflection.</A> 
107The symbol and symbol size
108used for observed data can be selected.
109The X and Y units can be changed to Q or d-space values. Background
110can be subtracted. The legend can be removed from the plot.
111
112<BR clear=left><HR>
113Previous step: <A HREF="garnet4.html">
114Run POWPREF and GENLES</A>
115<BR>
116Next step: <A HREF="garnet6.html">
117Additional Least-Squares Refinement</A>
118
119<HR>
120</blockquote>
121<P><font size=-1><A HREF="MAILTO:crystal@@NIST.gov?subject=WWW page <?=$PHP_SELF?>">Comments, corrections or questions: crystal@@NIST.gov</A></font><BR>
122<font size=-1><? lastmod(); ?> </font>
123<BR>$Revision: 1.4 $ $Date: 2002/04/12 21:21:18 $
124</body>
125</html>
126@
127
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130log
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133text
134@a2 1
135   <META NAME="Author" CONTENT="Brian H. Toby">
136a4 1
137<BODY BGCOLOR="#FFFFFF">
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140<A HREF=http://www.ncnr.nist.gov>
141<IMG SRC="http://www.ncnr.nist.gov/images/ncnrtrans.gif"
142alt="Link to NIST Center for Neutron Research home page"
143ALIGN=RIGHT></A>
144<A HREF=http://www.nist.gov>
145<IMG SRC="http://www.ncnr.nist.gov/images/webidblue_2lineright.gif"
146alt="Link to National Institute of Standards & Technology home page"
147ALIGN=LEFT></A>
148<CENTER>
149<A Href="http://www.ncnr.nist.gov/programs/crystallography/software/tclpkgs.html">
150<IMG SRC="tcltklogo100.gif"
151alt="Link to Tcl/Tk information">
152</CENTER></A>
153<hr>
154d85 5
155a89 5
156
157<BR clear=left>
158<HR><p><a href="http://www.ncnr.nist.gov/staff/toby/">Brian Toby</a> (<a href="mailto:brian.toby@@nist.gov">Brian.Toby@@NIST.GOV</a>)
159<BR clear=left>
160$Revision: 1.1 $ $Date: 2000/05/30 22:22:38 $
161@
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165log
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168text
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171results are the same as what is shown in the manu, so this will
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174$Revision: 1.1 $ $Date: 2000/05/26 16:08:48 $
175@
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