DIFF1321: Develop texture analysis

[peterfpeterson]

This is described in this user story

[peterfpeterson]

This is being moved out of version 1 as agreed upon by Andrew Payzant.

[fanchercm]

Items needed to finalize the texture reduction:
UI requirements

• Specifics of the UI are described in the user story
• Contour/Polar plot Initialize pole figure plot with NaN #42 Visualize polefigure in UI #39
• switch between out-of-plane angles (peakfit ui defaults to main entry, texture will need to use the defined eta_ entry)

Backend

• method to collect the peak information for all out-of-plane angles into a single object
• export data as ascii in mtex format Export the pole figure results #36
• export diffraction data as cif format, with associated instrument angles

Tests

• test for polefigure calculation Add test for pole figure calculation #411
• test reduction of data by out-of-plane angle with no vanadium normalization add pytest for texture reduction without vanadium normalization #415