Returns a FLOAT value.
| IF you pass in … |
THEN … |
|
iBegin and iEnd
|
the speed is calculated as the distance between the two points (along the LineString) divided by the time between them. |
|
index
|
if the point is:
- The first point, the distance between the first and second points is divided by the time between them.
- The last point, the distance between the second to the last and last points is divided by the time between them.
- Any other point, the distance between the previous point and the next point (along the LineString) is divided by the time difference between the previous point and the next point.
|
The units used for distance are the same units that are used by the coordinate system for the GeoSequence value, and the time units are in hours.