Changeset 898

Timestamp:

May 8, 2013 1:02:28 PM (11 years ago)

Author:

toby

Message:

minor help updates

Location:

trunk/help

Files:

• Calibration of an area detector in GSAS.htm (modified) (2 diffs)
• Fit Peaks.htm (modified) (4 diffs)

trunk/help/Calibration of an area detector in GSAS.htm

@@ -904 +904 @@
 
 <p class=MsoNormal><span style='mso-spacerun:yes'> </span>The plot window shows
-the image; notice the elliptical shape of the powder diffraction rings. The
+the image; notice the elliptical shape of the powder diffraction rings
+due to the 45 degree detector tilt. The
 blue <b style='mso-bidi-font-weight:normal'><span style='font-family:"Calibri","sans-serif";
 mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:minor-latin;mso-bidi-font-family:
 Calibri;mso-bidi-theme-font:minor-latin;color:#4F81BD;mso-themecolor:accent1'>X</span></b>
-marks the default beam location (image center); your calibration will correctly
-place it. Also notice that the values shown in the plot window status bar (at
-bottom of plot window) change as you move the cursor over the plot; these
-values are at present in error as they are computed from the default
-calibration values. They will be correct after you finish the calibration.</p>
+marks the beam location (which defaults to the image center); the
+calibration you will perform here will find the correct
+placement for it. Also note that as the mouse is moved across the plot
+the plot window status bar (at bottom of plot window) shows the
+cursor position, as computed from the default (incorrect) 
+calibration values. These constants will be correctly determined after you finish the calibration.</p>
 
 <p class=MsoNormal><span style='mso-spacerun:yes'> </span><span
@@ -1004 +1006 @@
 
 <p class=MsoNormal><span style='mso-spacerun:yes'>  </span>To remove a point
-added in error click on that point with the right mouse button [on the Mac, if
-you have a single-button mouse, hold the Command (<span style='font-family:
-"Cambria Math","serif";mso-bidi-font-family:"Cambria Math"'>&#8984;</span>) key
-down and click]. </p>
+added in error click on that point with the right mouse button
+(on the Mac, if you have a single-button mouse, hold the shift and control keys
+down and click).
+</p>
 
 <h3><span style='mso-spacerun:yes'> </span>Fourth:</h3>
 
 <p class=MsoNormal><span style='mso-spacerun:yes'>  </span>When done, press the
-right mouse button well away from any points that have been added [on the Mac,
-if you have a single-button mouse, hold the Command (<span style='font-family:
-"Cambria Math","serif";mso-bidi-font-family:"Cambria Math"'>&#8984;</span>) key
-down and click].</p>
+right mouse button well away from any points that have been added
+(on the Mac, if you have a single-button mouse, hold the shift and control keys
+down and click).
+</p>
 
 <p class=MsoNormal>The calibration is then performed. First the rings are

trunk/help/Fit Peaks.htm

@@ -1731 +1731 @@
 new mineral <a href="http://en.wikipedia.org/wiki/Jadarite"><span class=SpellE>jadarite</span></a>
 (aka “<a href="http://en.wikipedia.org/wiki/Kryptonite">kryptonite</a>”). The
-data was also collected on 11BM-B at APS. The unit cell is monoclinic so it is
+data were also collected on 11BM-B at APS. The unit cell is monoclinic so it is
 a more substantial test of the indexing capability of GSAS-II.</p>
 
@@ -1770 +1770 @@
 small ones); use <b style='mso-bidi-font-weight:normal'><span style='font-family:
 "Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
-minor-latin'>Auto search</span></b> to start and then fill in by hand. Note
+minor-latin'>Auto search</span></b> to start and then fill in by hand:
+Add peaks by left-clicking on a data point near the top of the
+peak. Peak positions can be moved by dragging the peak line and peaks
+can be deleted by right-clicking on them. This only works when the
+zoom and reposition modes (below) are not selected. Also note
 some peaks have shoulders most notably at 5.07, 6.04, 7.81deg. I found 28 peaks
 (there was one very weak shoulder at ~7.3 deg. I skipped – it might be from a
@@ -1939 +1943 @@
 
 <p class=MsoNormal>In this exercise we will fit peaks and index them for
-sucrose in preparation for a charge flipping exercise. The data was also
+sucrose in preparation for a charge flipping exercise. The data were also
 collected on 11BM-B at APS. The unit cell is monoclinic so is a more
 substantial test of the indexing capability of GSAS-II.</p>
@@ -1988 +1992 @@
 small ones); use <b style='mso-bidi-font-weight:normal'><span style='font-family:
 "Calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-hansi-theme-font:
-minor-latin'>Auto search</span></b> to start and then fill in by hand. Note the
+minor-latin'>Auto search</span></b> to start and then fill in by hand:
+Add peaks by left-clicking on a data point near the top of the
+peak. Peak positions can be moved by dragging the peak line and peaks
+can be deleted by right-clicking on them. This only works when the
+zoom and reposition modes (below) are not selected. Also note the
 shoulder at ~6.3 <span class=SpellE>deg</span> that should be added to the
 list. I skipped a couple of very weak peaks; the total list has 28 peaks.</p>