Changeset 556


Ignore:
Timestamp:
Dec 4, 2009 5:08:09 PM (11 years ago)
Author:
toby
Message:

# on 2002/01/25 21:17:48, toby did:
add absorption & reorganize page

File:
1 edited

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  • trunk/doc/expgui3.html

    • Property rcs:date changed from 2001/12/19 18:55:42 to 2002/01/25 21:17:48
    • Property rcs:lines changed from +21 -18 to +75 -32
    • Property rcs:rev changed from 1.10 to 1.11
    r507 r556  
    5656the Options Menu.
    5757</DL></DL>
     58</blockquote>
    5859<img SRC="3.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
    59 <P>
    60 <DL><DL>
    61 If there is more than one phase present in the refinement,
    62 an extra box appears at the top of the pane to allow phase flags
    63 to be selected. This allows a phase to be used in some histograms
    64 but not in others. It also offers a simple way to effectively "delete" a
    65 phase by removing it from all histograms. Be sure to rerun POWPREF after
    66 changing the phase flags.
    67 </DL></DL>
    68 <img SRC="3a.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
    69 <br clear=all>
    70 <P>
    71 <DL><DL>
    72 The pane appears slightly differently when
    73 <A href="expgui.html#multiplehistogram">
    74 "Multiple Histogram Selection" mode</A> is set to a single histogram type.
    75 In this case diffractometer constants are edited in separate windows (see
    76 <a href="#EditParm">Global Editing of Parameters</a>, below).
    77 <P>
    78 </DL></DL>
    79 <img SRC="3c.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
     60<blockquote>
    8061<br clear=all>
    8162
     
    10788See the <A HREF="liveplot.html#bkgedit">BKGEDIT documentation</A> for more
    10889information.
    109 
    110 <br clear=all>
    111 </DL></DL>
     90</DL></DL>
     91<br clear=all>
     92
     93<a name="EditAbsorption"></a>
     94<h3>A.3.2 Editing absorption/reflectivity
     95<IMG SRC="new.gif" HEIGHT=13 WIDTH=36 alt="New!">
     96</h3>
     97<DL><DL>
     98<img SRC="3h.gif" align=RIGHT alt="EXPGUI Screen snapshot">
     99The refinement flag and damping factor for correction for absorption
     100effects (or for flat-plate samples, reflectivity corrections) can be
     101seen in a box near the bottom of the pane.
     102The terms and the type of correction used
     103are set using the "Edit Abs./Refl." button in this box. Pressing this
     104button creates a window, shown to the right. A message is shown in the
     105bottom of the window summarizing information about the selected correction.
     106<P>
     107<a name="AbsorptionSanity"></a>
     108Please note, each correction is only appropriate for certain types of data
     109and frequently the correction must be fixed rather than refined. It is
     110wise to read the "Powder absorption factor" section of the GSAS manual
     111(p 138-140 in 1/19/01 edition) before using this correction.
     112Since some combinations of data types and correction types are unlikely --
     113but not impossible
     114(for example, a cylindical absorption correction and K-alpha1,2 radiation)
     115EXPGUI will generate a warning message, such as the one below,
     116but not all inappropriate actions can be prevented.
     117The user must ultimately understand the role of the correction
     118and the nature of the experiment to decide what is appropriate.
     119<br clear=all>
     120<img SRC="3h1.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
     121<br clear=all>
     122</DL></DL>
     123<br clear=all>
    112124
    113125<a name="EditParm"></a>
    114 <h3>A.3.2 Global Editing of Parameters</h3>
     126<h3>A.3.3 Global Editing of Parameters</h3>
     127<DL><DL>
     128It is possible to access parameters and settings for more than one histogram
     129at a time when a multiple selection of a specific histogram type
     130is allowed
     131(see
     132<A href="expgui.html#multiplehistogram">
     133"Multiple Histogram Selection" mode</A>).
     134In this mode, the histogram pane
     135appears slightly differently, as is shown below.
     136</DL></DL>
     137</blockquote>
     138<img SRC="3c.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
     139<blockquote>
     140<br clear=all>
    115141<DL><DL>
    116142<img SRC="3d.gif" align=LEFT alt="EXPGUI Screen snapshot">
    117 The dialog to the left shows how
     143Pressing a refinement flag checkbox will set all
     144selected histogram refinement flags either off or on.
     145Pressing a "Globally Edit..." button, will allow a parameter to be set.
     146For example, the window to the left shows how
    118147a diffractometer constant can be
    119148edited for more than one histogram
    120 (<A href="expgui.html#multiplehistogram">
    121 "Multiple Histogram Selection" mode</A> must be
    122 set to a single histogram type).
    123 This menu is also used to globally set the
    124 <A href="expgui4.html">Phase Fraction</A>.
     149<P>
     150A similar window is also used to globally set the
     151<A href="expgui4.html">Phase Fraction</A> in
     152<A href="expgui.html#multiplehistogram">
     153"Multiple Histogram Selection"</A> mode.
    125154<br clear=all>
    126155
     
    128157
    129158<a name="AddHist"></a>
    130 <h3>A.3.3 Entering New Diffractograms</h3>
     159<h3>A.3.4 Entering New Diffractograms</h3>
    131160<DL><DL>
    132161<img SRC="3e.gif" align=RIGHT alt="EXPGUI Screen snapshot">
     
    179208<br clear=all>
    180209<P>
    181 <h3>A.3.4 Editing the Data Range & Excluded Regions</h3>
     210<h3>A.3.5 Editing the Data Range & Excluded Regions</h3>
    182211<DL><DL>
    183212The button at the bottom of the pane, labeled
     
    188217</DL></DL>
    189218
    190 <h3>A.3.5 Setting Histogram Flags</h3>
     219<h3>A.3.6 Setting Histogram Flags</h3>
    191220<DL><DL>
    192221<img SRC="3f.gif" align=RIGHT alt="EXPGUI Screen snapshot">
     
    205234<br clear=all>
    206235</DL></DL>
     236
     237<h3>A.3.7 Setting Phase Flags</h3>
     238<DL><DL>
     239If there is more than one phase present in the refinement,
     240an extra box appears at the top of the pane to allow phase flags
     241to be selected. This allows a phase to be used in some histograms
     242but not in others. It also offers a simple way to effectively "delete" a
     243phase by removing it from all histograms. Be sure to rerun POWPREF after
     244changing the phase flags.
     245</DL></DL>
     246</blockquote>
     247<img SRC="3a.gif" align=TEXTTOP alt="EXPGUI Screen snapshot">
     248<blockquote>
     249<br clear=all>
    207250<hr>
    208251<TABLE BORDER BGCOLOR="#FFFF40" ALIGN=RIGHT>
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