Changeset 4621
- Timestamp:
- Oct 23, 2020 4:12:45 PM (2 years ago)
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- 1 edited
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trunk/help/gsasII.html
r4469 r4621 4195 4195 type PWDR</a></h2> 4196 4196 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’) is4197 <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 4199 4199 selected from the </span><a href="#Data_tree"><span style='mso-fareast-font-family: 4200 4200 "Times New Roman"'>data tree</span></a> … … 4202 4202 crosses and where fit, the calculated pattern is shown as a green 4203 4203 line; 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 4204 shown as a cyan line. Reflection positions are shown with small vertical 4205 lines. 4206 4207 </p><P></P> 4208 <p class=MsoNormal style='margin-left:.5in'> 4209 Each powder 4208 4210 diffraction dataset has a number of children in the tree as are shown 4209 4211 below. Clicking on any of them produces changes in the plot and allows … … 4233 4235 of powder patterns, just a single pattern or as a contour image of the peak 4234 4236 intensities. What can be done here will depend on which is displayed. 4237 </P><p class=MsoNormal style='margin-left:1.0in'> 4238 The difference curve position can be moved 4239 vertically by clicking on it and then "dragging" it up or down. 4240 Reflection positions 4241 can also be repositioned vertically by dragging them. 4242 The indicies (hkl values) for reflections can be displayed by 4243 selecting the "Reflection Lists" entry and then if needed the 4244 appropriate phase. Letting 4245 the mouse rest at the position of a reflection in 2-theta, Q, 4246 etc. (the vertical position does not matter). After a short delay a 4247 "tool tip" will be displayed for any reflections close to the lateral 4248 mouse position. 4235 4249 </P> 4236 4250 … … 4267 4281 x-axis scale. May not be very useful with data over a wide range. 4268 4282 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. 4272 4287 </DL> 4273 4288 … … 4356 4371 4357 4372 <p style='margin-left:0.75in'> 4358 You can change the "new" values for Tmin and Tmax as needed.</p> 4373 You can change the "new" values for Tmin and Tmax as needed. 4374 Change the upper and lower Tmin values by clicking on the 4375 appropriate vertical line and dragging it to the right or left or by 4376 typing values into the data window. 4377 </p> 4359 4378 4360 4379 <p style='margin-left:0.75in'> … … 5035 5054 It must be filled before indexing can proceed. When indexing is completed, this 5036 5055 display 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 5056 with 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 5040 5060 style='mso-fareast-font-family:"Times New Roman"'>.<span class=MsoHyperlink><span 5041 5061 style='color:windowtext;text-decoration:none;text-underline:none'><o:p></o:p></span></span></span></p> … … 5075 5095 5076 5096 <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> 5078 5098 5079 5099 <p class=MsoNormal style='margin-left:.5in'><span style='mso-fareast-font-family: … … 5282 5302 (including Pawley and LeBail) refinements. Reflection d-spaces are 5283 5303 generated directly from lattice parameters but 2θ values will 5284 incorporate corrections, such as for sample displacement, zero, etc. 5285 </p> 5304 incorporate 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"'> 5308 The indicies (hkl values) for reflections can be displayed by letting 5309 the mouse rest at the position of a reflection in 2-theta, Q, 5310 etc. (the vertical position does not matter). After a short delay, a 5311 "tool tip" will be displayed for any reflections close to the lateral 5312 mouse position. 5313 5314 </span></p> 5286 5315 5287 5316 <h5 style='margin-left:.5in'><span style='mso-fareast-font-family:"Times New Roman"'>What … … 7324 7353 <hr size=2 width="100%" align=center> 7325 7354 7326 <!-- hhmts start -->Last modified: Sat Jun 6 14:40:36CDT 2020 <!-- hhmts end -->7355 <!-- hhmts start -->Last modified: Fri Oct 23 15:56:02 CDT 2020 <!-- hhmts end --> 7327 7356 7328 7357 </div>
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