Coordinate Arrays

Coordinates are passed to and from Surfer as arrays of doubles with alternating X and Y coordinates.

For example, the triangle specified by the coordinates (x1,y1), (x2,y2), (x3,y3) would be passed in an array with the elements arranged like so: x1,y1,x2,y2,x3,y3. Surfer is flexible about the dimension of the array so long as the X and Y coordinates are contiguous (no empty elements) and alternating. To use arrays in Surfer from within VB:

1. Singly dimensioned array:

Dim coordinates(1 to 6) As Double

coordinates(1)=x1

coordinates(2)=y1

coordinates(3)=x2

coordinates(4)=y2

coordinates(5)=x3

coordinates(6)=y3

2. Doubly dimensioned array:

Dim Points(1 To 2,1 To NumPoints) As Double

Points(1,1) = x1: Points(2,1) = y1

Points(1,2) = x2: Points(2,2) = y2

Points(1,3) = x3: Points(2,3) = y3

The first dimension is used for the X and Y coordinate, the second dimension refers to the vertex index.

3. You can use the Array statement for initialization, and then copy the results to a double array:

coordinates = Array(x1,y1,x2,y2,x3,y3)

dim Points(1 to 6) As Double

For i=1 to 6

Points(i) =

Next

 

See Also

Introducing Scripter

Working with Scripts

Line Continuation

Program Statements

Double Quotes and Text

Operators

Variables

Comments

Overview of Surfer Objects

Object Hierarchy