Binning multiple Q ranges

General
1

Attempting to reduce data in multiple Q bins from SANS2D and using the exact user file commands (under “L”) http://www.mantidproject.org/SANS_User_File_Commands#SANS2D

Keep receiving the same ValueError

ValueError: Invalid value for property OutputBinning (dbl list) " 0.005,0.1,0.03,0.08,1.0 [/LOG]]": Could not set property OutputBinning. Can not convert " 0.005,0.1,0.03,0.08,1.0 [/LOG]]" to dbl list

at line 50 in ‘<Interface>’

caused by line 463 in ‘C:/MantidInstall/scripts/SANS\ISISCommandInterface.py’

caused by line 731 in ‘C:/MantidInstall/scripts/SANS\ISISCommandInterface.py’

caused by line 727 in ‘C:/MantidInstall/scripts/SANS\ISISCommandInterface.py’

caused by line 531 in ‘C:/MantidInstall/scripts/SANS\isis_reducer.py’

caused by line 2764 in ‘C:/MantidInstall/scripts/SANS\isis_reduction_steps.py’

caused by line 1094 in ‘C:\MantidInstall\bin\mantid\simpleapi.py’

caused by line 1032 in ‘C:\MantidInstall\bin\mantid\simpleapi.py’

caused by line 1016 in ‘C:\MantidInstall\bin\mantid\simpleapi.py’

when attempting to use the “/LOG” term despite where this appears. If i remove it, the data reduces but only bins in linear spacings.

Any help here would be much appreciated!

2

Hi, just looking into this issue for you.
Can I just confirm whether you see this issue as soon as you try to load the user file, or when you attempt to process the data?

Thanks,
Tom

3

It crops up after attempting to 1D reduce, the user file loads file.

Thanks,

Will

4

Can I ask:

  1. What is the version number and the release date for the Mantid you are using? (Main MantidPlot window → Help → About MantidPlot)
    2a. Is the exact line in your user file “L/Q 0.005,0.1,0.03,0.08,1.0 [/LOG]]”?
    2b. If it is, does “L/Q 0.005,0.1,0.03,0.08,1.0 /LOG” throw an issue?
5

Mantid is 3.13.0 and released on 24/07/18

I have tried all variations of adding /log - in square brackets, at the end of the line, or next to the dq parts. Whenever ‘/log’ or some string is present it throws up the error, whereas if I leave it out there is no error. The issue is that the default if i leave it out is to bin the data in linear steps not logarithmic steps.

6

Can I just get you to try changing the step sizes to negative values: “L/Q 0.005,-0.1,0.03,-0.08,1.0” would be your new string (under the hood, negative steps should be interpreted as logarithmic).

When I run this I don’t get an error, so if you can just check you get the output you expect.

Thanks

7

I don’t get the error either and works as expected! Thanks Tom, much appreciated!