Build against Python 3 by default

Martyn Gigg authored Jan 24, 2020 and Gigg, Martyn Anthony committed Jan 24, 2020

Some members cause issues with documentation processing
where they use an asterisk to denote end of positional
parameters but Sphinx treats this as starting an emphasis
block but then finds no matching end character. The methods
are not useful to us so we'll skip them.

Martyn Gigg authored Jan 24, 2020 and Gigg, Martyn Anthony committed Jan 24, 2020

Documentation builds in Python3 were warning that
the \b character used to fix the help string in
simpleapi was not a valid paramter name. Python 3
has proper suppoort for a Signature type. Use this
in preference to hacked strings.

Load and display data for PANTHER in diffraction mode

Adding plotting options to the Muon Analysis GUI

Introduction of new tests for the plotting options, covering:
Errors selected
Axis limits changed in options
Axis limits changed through the figure toolbar
Autoscale requested

Due to the addition of the plotting options the tests were failing.

Previously the options were reset when a new run was loaded, or a plotting option was changed e.g to tiled plotting. To make this change the default axis limits are now only used if no limits are present in the quickEdit axis bounds boxes.

Adding plotting options to the dock widget. This is added through the quickEdit_widget used in elemental analysis.

This commit adds the widget, and tests the error checkbox
Implementing plotting options

Improve muon analysis plotting

This does not yet drop Python 2 support

Controls whether the build is against Python2 or Python3.
CMake checks have been introduced to flush out old variables
if a previous build was against a different python major.minor
version.

Fix Windows Python 3 test failures

Improve sampling of scatter points in absorption correction simulation

Refs #27744

Manually clamps PowerNorm values to 0, previously matplot lib handled it
for us and would clamp 0, then scale

By the look of it commit ca5b2e07ec1 (upstream in matplotlib) changed
this to accepting negative values, then scaling them in the interval
[0,1].

This ensures the colour scale bars in instrument view continues working
in an intuative way

Refs #27744

Incorrect options were used to compile the Fortran such
that it produced incorrect results.
Refs #27744

Fixes file handling not checking that the JSON file both exists, and it
writes correctly.
Updates the unit test to use a file path compatible with all platforms

Refs #27744

Refs #27744

Refs #27744