Having access to full antenna models, or 3D pattern files, is sometimes challenging when performing radio wave propagation simulations.
In some cases, we only have access to the datasheet of a given antenna. Using AMan, the antenna manger tool in Altair's WinProp, one can import the bitmap image of a horizontal and vertical pattern in polar plot and generate a full 3D antenna pattern file, usable in ProMan for propagation simulations.
This video shows the detailed steps of this process: