It is impossible to obtain exact registration with aerial photos since they are not flat projections, and have some "skew".
All underlays must be 256 colors or less.
Display of Topo, Elevation, and Aerial Photo's in Ui-View32/PMapServer7
Aerial Photo underlay from Eugene,OR
It is impossible to obtain exact registration with aerial photos since they are
not flat projections, and have some "skew".
All underlays must be 256 colors or less.
Topo Map underlays in Ui-View32/PMapServer7
PMap overlays street and highway data onto topo map to provide more detailed
information.
Fully zoomable, but pixellation will be severe when you zoom in too far.
Registration is fair, but some skew can be seen.
SRTM Digital Elevation underlay
Shuttle Radar Topography Mission data shows elevations of ground clutter (trees,
buildings etc)
The underlay is a bitmap created using STRM elevation data.
Black is low elevation, white is high. 256 different elevation levels
The black areas in the DesPlaines River valley are stone quarries.
