XYDRasterLayers are essentially 3D compound RasterLayers with a different 2D data grid for each direction. They are specified at a height above ground level. In Openwind, when an XYDRasterLayer is selected in the tree-view, extra controls like those in figure 83 appear in the toolbar.
Figure 83 shows that the currently selected XYDRasterLayer contains data that is at a height 80m above ground level and is currently displaying a 2-dimensional raster, which indicates how the data for direction 5 out of 12 (i.e. for bearing 120 degrees from North) varies over its extents. XYDRasterLayers are signified by a 
symbol in the tree-view.
XYDRasterLayers can be used to represent any data field which varies by location and direction: turbulence intensity, inflow angles, and other interpretations currently under development.
Whereas RasterLayers and VectorLayers are queries by location alone, XYDRasterLayers are queried by location and direction.
