Spherical latitude and longitude for a
grid point representing pointing direction in 3D space.
Name |
Dimension |
Type |
Description |
Latitude |
LatitudeUnit |
Real Number |
The detic latitude (i.e., angle between the detic
subpoint's surface normal vector and the XY plane.) |
Longitude |
LongitudeUnit |
Real Number |
The detic longitude (i.e., angle from the X-axis
locating the projection of the detic subpoint's surface normal
vector onto the XY plane.) Longitude increases in the direction
found using the right-hand rule about the Z-axis. |
Latitude Span |
LatitudeUnit |
Real Number |
The width of the latitude/longitude rectangle
containing the grid point. |
Longitude Span |
LongitudeUnit |
Real Number |
The height of the latitude/longitude rectangle
containing the grid point. |
Point Number |
Unitless |
Integer |
Point number. |