The GM_ViewShedParams_t type exposes the following members.
End angle in radians for radar sweep
Start angle in radians for radar sweep
Atmospheric correction value (1.0 for none)
Center point in global coordinates
Color to display view shed data in
View shed description
Optional rectangle for filtering view shed to a certain area of interest
Frequency (in GHz) to use for testing clearance of first Fresnel zone (use 0.0 to not do Fresnel testing)
Percentage of first Fresnel zone that must be clear of obstacles (use 0.6 for 60%). If 0 is specified, the default of 60% is used.
Generate area/polygon features for the covered area (these are vector and exportable to vector formats)
Search radius in meters
Angle (in degrees) above horizon to test at (NULL for none)
Angle (in degrees) above horizon to stop test at (NULL for none) - if this and mReceiverAngle are provided, an angle range view shed test is done (like a flashlight beam)
Height at which transmitter must be visible
Is the receiver height absolute or relative to the ground?
Make hidden points visible instead of viewable points.
Display view shed calculation progress?
Size of structure in bytes
Transmitter height in meters
Is the transmitter height absolute or relative to the ground?
Use the curvature of the earth in the analysis?
Are vector elevations absolute (i.e. relative to sea level) or relative to ground level?
List of vector layers to use features with elevation attributes from
Number of vector layers in list
X sample spacing (use 0.0 for default spacing)
Y sample spacing (use 0.0 for default spacing)