The general aim is to convert the coordinates of a series of diffraction intensity measurements from angular (goniometer angles) and positional space (how and where is the detector mounted) into reciprocal space coordinates. The result will be a cloud of data points in 3-dimensional space, but not generally on some well-defined coordinate grid. Mapping these data onto some regular coordinate system allows for the extraction of physically useful information. Below are some examples of useful transformations:

3-dimensional reciprocal space maps

Isosurfaces,...

Plane cuts through the 3D RSMs

Cut planes at arbitrary orientations through the volume.

Histograms of intensity versus |Q|

Pole figures (angular maps at constant |Q|)