Crs.Length3D Methods
Returns the 3D length of a line.
Overload List
| Name | Description | |
|---|---|---|
| Public method | Length3D(PointCollection line, LineType lineType, System.Boolean lineClosed) | Returns the 3D length of the line represented by the specified points. |
| Public method | Length3D(Point start, Point end, LineType lineType) | Returns the 3D length of a line segment between two specified points. |
| Public method | Length3D(IEnumerable< Point > line, LineType lineType, System.Boolean lineClosed) | Returns the 3D length of the line represented by the specified points. |
Length3D(PointCollection line, LineType lineType, System.Boolean lineClosed)
Returns the 3D length of the line represented by the specified points.Syntax
public System.Double Length3D (
PointCollection line,
LineType lineType,
System.Boolean lineClosed
)Parameters
The polyline, as a collection of projected points, whose z coordinates represent meters above sea level.
The kind of line.
Whether there is a line segment from the last point back to the first.
Return Value
The 3D length of the line, in meters.
Remarks
Line type and accuracy
The line type GreatCircleApprox is not supported.
If the Projection is a NonGeoreferencedProjection, then the line segments are regarded as straight lines in a Cartesian space, with unknown accuracy on Earth.
Otherwise we have a georeferenced CRS, and the Straight3D line type should give sub-centimeter accuracy. The GreatCircle and RhumbLine line types should give sub-decimeter accuracy, although it may be worse if some line node altitudes are very high, say higher than 50 000 m.
Length3D(Point start, Point end, LineType lineType)
Returns the 3D length of a line segment between two specified points.Syntax
public System.Double Length3D (
Point start,
Point end,
LineType lineType
)Parameters
The first point in the segment.
The last point in the segment.
The kind of line segment.
Return Value
The 3D length of the line, in meters.
Remarks
Line type and accuracy
The line type GreatCircleApprox is not supported.
If the Projection is a NonGeoreferencedProjection, then the line segments are regarded as straight lines in a Cartesian space, with unknown accuracy on Earth.
Otherwise we have a georeferenced CRS, and the Straight3D line type should give sub-centimeter accuracy. The GreatCircle and RhumbLine line types should give sub-decimeter accuracy, although it may be worse if some line node altitudes are very high, say higher than 50 000 m.
Length3D(IEnumerable< Point > line, LineType lineType, System.Boolean lineClosed)
Returns the 3D length of the line represented by the specified points.Syntax
public System.Double Length3D (
IEnumerable< Point > line,
LineType lineType,
System.Boolean lineClosed
)Parameters
The polyline, as a collection of projected points.
The kind of line.
Whether there is a line segment from the last point back to the first.
Return Value
The 3D length of the line, in meters.
Remarks
Line type and accuracy
The line type GreatCircleApprox is not supported.
If the Projection is a NonGeoreferencedProjection, then the line segments are regarded as straight lines in a Cartesian space, with unknown accuracy on Earth.
Otherwise we have a georeferenced CRS, and the Straight3D line type should give sub-centimeter accuracy. The GreatCircle and RhumbLine line types should give sub-decimeter accuracy, although it may be worse if some line node altitudes are very high, say higher than 50 000 m.
Platforms
Windows, Linux, Android