Changeset 4621


Ignore:
Timestamp:
Oct 23, 2020 4:12:45 PM (12 months ago)
Author:
toby
Message:

misc help info

File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/help/gsasII.html

    r4469 r4621  
    41954195type PWDR</a></h2>
    41964196
    4197 <p class=MsoNormal style='margin-left:.5in'><span style='mso-fareast-font-family:
    4198 "Times New Roman"'>When a powder diffraction dataset (prefix ‘PWDR’) is
     4197<span style='mso-fareast-font-family:"Times New Roman"'>
     4198<p class=MsoNormal style='margin-left:.5in'>When a powder diffraction dataset (prefix ‘PWDR’) is
    41994199selected from the </span><a href="#Data_tree"><span style='mso-fareast-font-family:
    42004200"Times New Roman"'>data tree</span></a>
     
    42024202crosses and where fit, the calculated pattern is shown as a green
    42034203line; the background is shown as red line. The difference curve is
    4204 shown as a cyan line; the difference curve can be moved to another
    4205 position by clicking on it and then dragging it to a new
    4206 position. Reflection positions are shown with small vertical
    4207 lines. These can also be repositioned by dragging them. Each powder
     4204shown as a cyan line. Reflection positions are shown with small vertical
     4205lines.
     4206
     4207</p><P></P>
     4208<p class=MsoNormal style='margin-left:.5in'>
     4209Each powder
    42084210diffraction dataset has a number of children in the tree as are shown
    42094211below. Clicking on any of them produces changes in the plot and allows
     
    42334235of powder patterns, just a single pattern or as a contour image of the peak
    42344236intensities. What can be done here will depend on which is displayed.
     4237</P><p class=MsoNormal style='margin-left:1.0in'>
     4238The difference curve position can be moved
     4239vertically by clicking on it and then "dragging" it up or down.
     4240Reflection positions
     4241can also be repositioned vertically by dragging them.
     4242The indicies (hkl values) for reflections can be displayed by
     4243selecting the "Reflection Lists" entry and then if needed the
     4244appropriate phase. Letting
     4245the mouse rest at the position of a reflection in 2-theta, Q,
     4246etc. (the vertical position does not matter). After a short delay a
     4247"tool tip" will be displayed for any reflections close to the lateral
     4248mouse position.
    42354249</P>
    42364250
     
    42674281    x-axis scale. May not be very useful with data over a wide range.
    42684282
    4269 <DT><B> w: toggle divide by sig</b><dd>for the pattern selected from the data tree, this will
    4270 divide the observed, calculated and difference curves by the esd for the data
    4271 points. Other data sets are not shown.
     4283<DT><B> w: toggle diff plot</b><dd>for the pattern selected from the
     4284  data tree, this will replace the difference (obs-calc) curve with
     4285  the differences divided by their standard uncertainty (esd) values,
     4286  which shows the significance of the deviations.
    42724287</DL>
    42734288
     
    43564371
    43574372<p style='margin-left:0.75in'>
    4358 You can change the "new" values for Tmin and Tmax as needed.</p>
     4373You can change the "new" values for Tmin and Tmax as needed.
     4374Change the upper and lower Tmin values by clicking on the
     4375appropriate vertical line and dragging it to the right or left or by
     4376typing values into the data window.
     4377</p>
    43594378
    43604379<p style='margin-left:0.75in'>
     
    50355054It must be filled before indexing can proceed. When indexing is completed, this
    50365055display will show the resulting hkl values for every indexed reflection along
    5037 with the calculated d-spacing (‘d-calc’) for the selected unit cell in </span><a
    5038 href="#Unit_Cells_List"><span style='mso-fareast-font-family:"Times New Roman";
    5039 color:windowtext;text-decoration:none;text-underline:none'>Unit Cells List</span></a><span
     5056with the calculated d-spacing (‘d-calc’) for the selected unit cell in
     5057<a href="#Unit_Cells_List"><B>Unit Cells List</B></a>.</span>
     5058
     5059<span
    50405060style='mso-fareast-font-family:"Times New Roman"'>.<span class=MsoHyperlink><span
    50415061style='color:windowtext;text-decoration:none;text-underline:none'><o:p></o:p></span></span></span></p>
     
    50755095
    50765096<h4 style='margin-left:0.25in'><a name="PWDR_Unit_Cells_List">
    5077 Unit Cells List</a></h4>
     5097<U>Unit Cells List</U></a></h4>
    50785098
    50795099<p class=MsoNormal style='margin-left:.5in'><span style='mso-fareast-font-family:
     
    52825302(including Pawley and LeBail) refinements. Reflection d-spaces are
    52835303generated directly from lattice parameters but 2θ values will
    5284 incorporate corrections, such as for sample displacement, zero, etc.
    5285 </p>
     5304incorporate corrections, such as for sample displacement, zero, etc.
     5305
     5306</span></p><p class=MsoNormal style='margin-left:.5in'><span style='mso-fareast-font-family:
     5307"Times New Roman"'>
     5308The indicies (hkl values) for reflections can be displayed by letting
     5309the mouse rest at the position of a reflection in 2-theta, Q,
     5310etc. (the vertical position does not matter). After a short delay, a
     5311"tool tip" will be displayed for any reflections close to the lateral
     5312mouse position.
     5313
     5314</span></p>
    52865315
    52875316<h5 style='margin-left:.5in'><span style='mso-fareast-font-family:"Times New Roman"'>What
     
    73247353<hr size=2 width="100%" align=center>
    73257354
    7326 <!-- hhmts start -->Last modified: Sat Jun  6 14:40:36 CDT 2020 <!-- hhmts end -->
     7355<!-- hhmts start -->Last modified: Fri Oct 23 15:56:02 CDT 2020 <!-- hhmts end -->
    73277356
    73287357</div>
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