Changeset 444

Timestamp:

Dec 4, 2009 5:06:16 PM (14 years ago)

Author:

toby

Message:

# on 2001/09/25 23:21:11, toby did:
dummy histogram support
Setting Histogram Flags

File:

• trunk/doc/expgui3.html (modified) (2 diffs, 3 props)

trunk/doc/expgui3.html

@@ -128 +128 @@
 <h3>A.3.3 Entering New Diffractograms</h3> 
 <DL><DL>
-<img SRC="3e.gif" align=LEFT alt="EXPGUI Screen snapshot">
+<img SRC="3e.gif" align=RIGHT alt="EXPGUI Screen snapshot">
 Pressing the "Add New Histogram" button creates the dialog
-to the left. A data file and an instrument parameter file are 
-selected using the "Select File" buttons. If more than 
-one bank is defined, the bank must be selected and the maximum
-data value to be considered, must be entered. Note that the 
-units for the maximum (minimum for d-spaces) must also be selected.
-(This can be edited at a later time using the
-<a href="excledt.html">EXCLEDT</a> utility.)
+to the left. This can be used to select diffraction data to be used
+in the refinement, or if the "dummy histogram" boxed is selected,
+a set of diffraction data can be simulated.
+<P>
+In the case where diffraction data will be input,
+a data file and an instrument parameter file must be 
+selected using the "Select File" buttons. The limit for reflection 
+generation (maximum energy or two-theta, or minimum d-space or TOF) 
+must be entered, as well as the units. 
+If more than one bank is defined, either in the data file or in the 
+instrument parameter file, the bank must be selected as well.
+Note that the data range can be edited at a later time using the 
+<a href="excledt.html">EXCLEDT</a> utility.
 <P>
 To view a plot of a data file, so that the range of the data
@@ -144 +150 @@
 reentered.
 <P>
+<br clear=all>
+<img SRC="3e1.gif" align=RIGHT alt="EXPGUI Screen snapshot">
+When the dummy histogram option is selected, diffraction data can 
+be simulated based a set of experimental constants
+described in an instrument parameter file. 
+Note that most of these instrumental parameters,
+such as wavelength or DIFC can be edited on this pane or 
+on the <A HREF="expgui5.html">profile</A> pane 
+(the simulated pattern is also affected by constants on the 
+<A HREF="expgui4.html">scaling</A> pane.)
+The 2-theta/energy/TOF 
+range to be used for the computation, as well as the step size,
+must be entered before pressing the "Add" button. 
+Note that once the histogram is added, this range and step size
+cannot be edited within EXPGUI at present. However,
+EXPEDT can be used to change these values.
+<br clear=all>
+<P>
 <a name="AddHistErr"></a>
-If errors are detected in the input, an error message is displayed detailing where
-the errors are found. Otherwise, the EXPTOOL program is run.
-and the output is displayed
-</DL></DL>
+<img SRC="3e2.gif" align=LEFT alt="EXPGUI Screen snapshot">
+If errors are detected in the input, an error message is displayed 
+detailing where the errors are found. Otherwise, the EXPTOOL program is run
+and the output is optionally displayed 
+(See <a href="expguic.html#exptoolout">Show EXPTOOL output</a>).
+</DL></DL>
+<br clear=all>
+<P>
 <h3>A.3.4 Editing the Data Range & Excluded Regions</h3> 
 <DL><DL>
-The button at the bottom of the pane, labeled "Data Limits/Exclude" invokes
+The button at the bottom of the pane, labeled 
+"Set Data Limits & Excluded Regions" invokes
 the <a href="excledt.html">EXCLEDT</a> utility, which is used to 
 modify the lower and upper data limits and can be used to add or delete 
 excluded regions.
+</DL></DL>
+
+<h3>A.3.5 Setting Histogram Flags</h3> 
+<DL><DL>
+<img SRC="3f.gif" align=RIGHT alt="EXPGUI Screen snapshot">
+The button at the bottom of the pane, labeled "Set Histogram Use Flags" invokes
+a menu where the "Use"/"Do not use" flag for powder histogram can be set.
+When this flag is turned off, the histogram is ignored for
+subsequent computations, effectively removing from the experiment. 
+<P>
+When these "Use" flags are changed, it is necessary to run POWPREF,
+to propogate the changes. After the "Save" button is pressed, a prompt such
+as the example below, is generated to run POWPREF. Note that GENLES may
+fail if POWPREF is not run after changing these flags.
+<br clear=all>
+<P>
+<img SRC="3g.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
+<br clear=all>
 </DL></DL>
 <hr>