source: trunk/doc/expgui3.html @ 440

Last change on this file since 440 was 435, checked in by toby, 12 years ago

# on 2001/09/04 23:06:17, toby did:
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Data Range & Excluded Regions

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1<html>
2<head>
3   <META NAME="Author" CONTENT="Brian H. Toby">
4   <title>EXPGUI</title>
5</head>
6<BODY BGCOLOR="#FFFFFF">
7
8<A HREF=http://www.ncnr.nist.gov>
9<IMG SRC="http://www.ncnr.nist.gov/images/ncnrtrans.gif" 
10alt="Link to NIST Center for Neutron Research home page"
11ALIGN=RIGHT></A>
12<A HREF=http://www.nist.gov>
13<IMG SRC="http://www.ncnr.nist.gov/images/webidblue_2lineright.gif" 
14alt="Link to National Institute of Standards & Technology home page"
15ALIGN=LEFT></A>
16<CENTER>
17<A Href="http://www.ncnr.nist.gov/programs/crystallography/software/tclpkgs.html">
18<IMG SRC="tcltklogo100.gif" 
19alt="Link to Tcl/Tk information">
20</CENTER></A>
21<br clear=all><hr>
22
23<TABLE BORDER BGCOLOR="#FFFF40" ALIGN=RIGHT>
24<TR><TH><A  Href="expgui.html">EXPGUI top</A> 
25</TH><TH><A Href="expgui4.html">Next page</A>
26</TH><TH><A Href="expgui2.html">Previous page</A>
27</TH></TR></TABLE><BR CLEAR=ALL>
28
29<center><h1>
30EXPGUI, part 3
31</h1></center>
32<h3>A.3 Histogram pane</h3> 
33<DL><DL>
34The histogram pane is used to edit background
35and diffractometer constants for a histogram, as well as
36set damping and refinement flags for these parameters.
37<P>
38If
39<A href="expgui.html#multiplehistogram">
40"Multiple Histogram Selection" mode</A> is set to "All",
41this pane is disabled. For other settings of this mode,
42groups of histograms can be selected and modified
43collectively.
44<P>
45If the EXPTOOL program
46<A href="expgui.html#installation">(see the installation instructions)</A>
47is installed, a button for adding histograms will
48appear on the bottom right on this pane, as seen below. If the
49program is not properly installed, no errors occur, but the button
50does not appear.
51<P>
52Note that the order that histograms appear in this
53pane is determined by the <a href="expguic.html#sorthist">"Sort histograms by"</a> option in
54the Options Menu.
55</DL></DL>
56<img SRC="3.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
57<P>
58<DL><DL>
59If there is more than one phase present in the refinement,
60an extra box appears at the top of the pane to allow phase flags
61to be selected. This allows a phase to be used in some histograms
62but not in others. It also offers a simple way to effectively "delete" a
63phase by removing it from all histograms. Be sure to rerun POWPREF after
64changing the phase flags.
65</DL></DL>
66<img SRC="3a.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
67<br clear=all>
68<P>
69<DL><DL>
70The pane appears slightly differently when
71<A href="expgui.html#multiplehistogram">
72"Multiple Histogram Selection" mode</A> is set to a single histogram type.
73In this case diffractometer constants are edited in separate windows (see
74<a href="#EditParm">Global Editing of Parameters</a>, below).
75<P>
76</DL></DL>
77<img SRC="3c.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
78<br clear=all>
79
80<a name="EditBackground"></a>
81<h3>A.3.1 Editing background</h3> 
82<DL><DL>
83<img SRC="3b1.gif" align=TEXTOP alt="EXPGUI Screen snapshot">
84When the button labeled "Edit Background", (or "Globally Edit Background"
85or in the case where <A href="expgui.html#multiplehistogram">
86"Multiple Histogram Selection" mode</A> is set to a single histogram type)
87is pressed, a window such as the one
88to the left is displayed. In the case where background coefficients
89are being edited for more than one histogram
90(<A href="expgui.html#multiplehistogram">
91"Multiple Histogram Selection" mode</A> must be
92set to a single histogram type) the entry boxes will appear blank
93and only those terms that are filled in will be changed when the "Set"
94button is pressed.
95This option is mostly useful when changing the background function or the
96number of terms for several histograms at a single time.
97Note that no changes are made until the "Set"
98button is pressed.
99<P>
100<IMG SRC="new.gif" HEIGHT=13 WIDTH=36 alt="New!">
101The "Fit Background Graphically" button is displayed only when a single
102histogram is selected for background editing. When this button is
103pressed, the <A HREF="liveplot.html#bkgedit">BKGEDIT</A> program is
104called to fit a background function to user-input fixed background points.
105See the <A HREF="liveplot.html#bkgedit">BKGEDIT documentation</A> for more
106information.
107
108<br clear=all>
109</DL></DL>
110
111<a name="EditParm"></a>
112<h3>A.3.2 Global Editing of Parameters</h3> 
113<DL><DL>
114<img SRC="3d.gif" align=LEFT alt="EXPGUI Screen snapshot">
115The dialog to the left shows how
116a diffractometer constant can be
117edited for more than one histogram
118(<A href="expgui.html#multiplehistogram">
119"Multiple Histogram Selection" mode</A> must be
120set to a single histogram type).
121This menu is also used to globally set the
122<A href="expgui4.html">Phase Fraction</A>.
123<br clear=all>
124
125</DL></DL>
126
127<a name="AddHist"></a>
128<h3>A.3.3 Entering New Diffractograms</h3> 
129<DL><DL>
130<img SRC="3e.gif" align=LEFT alt="EXPGUI Screen snapshot">
131Pressing the "Add New Histogram" button creates the dialog
132to the left. A data file and an instrument parameter file are
133selected using the "Select File" buttons. If more than
134one bank is defined, the bank must be selected and the maximum
135data value to be considered, must be entered. Note that the
136units for the maximum (minimum for d-spaces) must also be selected.
137(This can be edited at a later time using the
138<a href="excledt.html">EXCLEDT</a> utility.)
139<P>
140To view a plot of a data file, so that the range of the data
141may be viewed, the RAWPLOT program may be invoked using the "Run RAWPLOT"
142button. Note that EXPGUI cannot communicate the names
143of the data and instrument parameter files to RAWPLOT, so they must be
144reentered.
145<P>
146<a name="AddHistErr"></a>
147If errors are detected in the input, an error message is displayed detailing where
148the errors are found. Otherwise, the EXPTOOL program is run.
149and the output is displayed
150</DL></DL>
151<h3>A.3.4 Editing the Data Range & Excluded Regions</h3> 
152<DL><DL>
153The button at the bottom of the pane, labeled "Data Limits/Exclude" invokes
154the <a href="excledt.html">EXCLEDT</a> utility, which is used to
155modify the lower and upper data limits and can be used to add or delete
156excluded regions.
157</DL></DL>
158<hr>
159<TABLE BORDER BGCOLOR="#FFFF40" ALIGN=RIGHT>
160<TR><TH><A  Href="expgui.html">EXPGUI top</A> 
161</TH><TH><A Href="expgui4.html">Next page</A>
162</TH><TH><A Href="expgui2.html">Previous page</A>
163</TH></TR></TABLE>
164
165<a href="http://www.ncnr.nist.gov/staff/toby/">Brian Toby</a> (<a href="mailto:brian.toby@nist.gov">Brian.Toby@NIST.GOV</a>)
166<br>
167$Revision: 435 $ $Date: 2009-12-04 23:06:07 +0000 (Fri, 04 Dec 2009) $
168</body>
169</html>
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