Changeset 346745a in sasview


Ignore:
Timestamp:
Sep 9, 2018 5:25:43 AM (13 days ago)
Author:
smk78
Branches:
master, bad_file_loader_fix, ticket-1094-headless, ticket-1111
Children:
b229a3b
Parents:
e873408
Message:

Overhauled slit_calculator_help. Fixes #897

File:
1 edited

Legend:

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  • src/sas/sasgui/perspectives/calculator/media/slit_calculator_help.rst

    r170b251 r346745a  
    1111----------- 
    1212 
    13 This tool enables X-ray users to calculate the slit size (FWHM/2) for smearing 
    14 based on their half beam profile data. 
     13This tool enables X-ray users to calculate the slit size (FWHM/2) for resolution  
     14smearing purposes based on their half beam profile data (as Q vs Intensity; any  
     15other data fields are ignored). 
     16 
     17Method 
     18------ 
     19 
     20The tool works by sequentially summing 10 or more intensity values until a  
     21maximum value is attained. It then locates the Q values for the points just before,  
     22and just after, **half** of this maximum value and interpolates between them to get  
     23an accurate value for the Q value for the half maximum. 
    1524 
    1625NOTE! Whilst it may have some more generic applicability, the calculator has 
    17 only been tested with beam profile data from Anton-Paar SAXSess\ :sup:`TM` software. 
     26only been tested with beam profile data from Anton-Paar SAXSess\ :sup:`TM`\  software. 
     27The beam profile file does not carry any information about the units of the  
     28Q data. It is probably |nm^-1| but the resolution calculations assume the slit  
     29height/width has units of |Ang^-1|. If the beam profile data is not in these  
     30units then it, or the result, must be manually converted. 
    1831 
    1932.. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ 
     
    2740 
    2841   *NOTE! To see an example of the beam profile file format, visit the file 
    29    beam profile.DAT in your {installation_directory}/SasView/test folder.* 
     42   beam profile.DAT in your {installation_directory}/SasView/test_1d folder.* 
    3043 
    31443) Once a data is loaded, the slit size is automatically computed and displayed 
    3245   in the tool window. 
    3346 
    34 NOTE! The beam profile file does not carry any information about the units of 
    35 the Q data. This calculator assumes the data has units of 1/|Ang|. If the 
    36 data is not in these units it must be manually converted beforehand. 
    37  
    3847.. ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ 
    3948 
    40 .. note::  This help document was last changed by Steve King, 01May2015 
     49.. note::  This help document was last changed by Steve King, 09Sep2018 
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