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# Muon Feature Flags¶

## How to set up¶

To access feature flags you need to make changes to your Mantd.user.properties file. To do this, follow these instructions:

1. Navigate to the location of the Mantid.user.properties file

1. For Windows users - Open the file explorer and navigate to the MantidInstall\bin folder

2. For Mac or Linux users - go to ~/.mantid/Mantid.user.properties

2. Open the Mantid.user.properties file.

3. At the bottom of the file add the line muon.GUI=<options>. See section on Options below for more details.

4. Save the file.

5. Open Mantid - You should now have access to the features you chose in step 4.

If this does not work see the Warning notice below for common ways this can fail.

## Options¶

The options are a comma separated list of feature:setting where the feature and settings are defined below:

Feature

Setting

What it does

model_analysis

1

model_analysis

2

Adds the model fitting tab and the model data plot pane

raw_plots

1

Fit_wizard

1

The setting is always a number and, setting it to any other value than those above will results in the feature not being added.

One example of how to use this - if you want to have the model fitting tab and plotting pane in addition to the raw plots you would need to add the following line to Mantid.user.properties file:

muon.GUI = model_analysis:2, raw_plots:1

## Warning¶

Setting any of the following for the first time may remove the muon.GUI=<options> line from the properties file.

• Default facility

• Default instrument

• Manage user directories

To avoid this :

• Open Mantid and set the default settings (i.e. the list above)

• Close Mantid

• Edit the Mantid.user.properties file

Updating the facility, instrument or user directories will not remove the muon.GUI=<options> line. It only seems to occur when setting these options for the first time.