Calculate Length
This function is not available via the GUI of ET GeoWizards.
Calculates the length of polylines or the perimeter of polygons. Please see the explanations below
Command line syntax
ET_GPCalculateLength <input_dataset> {calc_spatial_reference} { | Meters | Kilometers | Feet | Miles | Yards | Inches | Centimeters | Millimeters} {Length_field}
Parameters
Expression | Explanation |
---|---|
<input_dataset> | A Polyline or Polygon feature class or feature layer. |
{calc_spatial_reference} | The
spatial reference in which the calculations will be performed. If not
specified the spatial reference of the input dataset will be used. NOTE: The spatial reference of the input dataset and the Calculations spatial reference must have the same Geographic Coordinate System |
{ | Meters | Kilometers | Feet | Miles | Yards | Inches | Centimeters | Millimeters} | Output
Units. A String that defines the units in which the length will be
calculated. NOTE: If the the Calculations spatial reference is a Geographic Coordinate System, this parameter will be ignored and the results will be calculated in decimal degrees!!! |
{Length_field} | Length Field. A String indicating an existing field in which the results for the length will be stored. If not specified a new field "ET_Length" will be created |
Scripting syntax
ET_GPCalculateLength (input_dataset, calc_spatial_reference, output_units, Length_field)
See the explanations above:
<> - required parameter
{} - optional parameter
CalculateLength(pInFC As IFeatureClass, Optional pSpatialReference As ISpatialReference = Nothing, Optional sDistanceUnits As String = "", Optional sLengthField As String = "") As Boolean
Copyright © Ianko Tchoukanski |