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Load GISAS data from RefSans, given as three-columns csv table (Qy, Qz, counts)

Reflectometer REFSANS at MLZ (https://mlz-garching.de/refsans) can produce Q-maps directly as detector image with 256x256 pixel.

It would be highly desirable to have an option to import this data files directly into BornAgain.

The simplest file format is a csv-table with three columns: Qy, Qz and the counts at this coordinate.

IMG_3733-GISANS

(Requested by Martin Haese)

If detector matrix was slightly rotated, the data will not map directly to the rectangular mesh along Qz and Qy axes. Should we do interpolation and remapping then?

Edited by Mikhail Svechnikov