Sample code for creating a new linestring and calculating it's length.

Imports DotSpatial.Geometries
Imports DotSpatial.Common

Private Sub btnLineString_Click(sender As Object, e As EventArgs)
			'creates a new coordinate array
			Dim coords As Coordinate() = New Coordinate(35) {}
			'creates a random point variable
			Dim rnd As New Random()
			'a for loop that generates a new random X and Y value and feeds those values into the coordinate array
			For i As Integer = 0 To 35
				coords(i) = New Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90)
			Next
			'creates a new linstring from the array of coordinates
			Dim ls As New LineString(coords)
			'new variable for the length of the linstring
			Dim length As [Double]
			length = ls.Length
			'Displays the length of the linstring
			MessageBox.Show("The length of the linstring is: " & length)
		End Sub

Last edited Jul 13, 2010 at 2:33 PM by AlamoMan, version 3