Question

Which data is primarily used to compute distance in vector networks?

• A. X and Y coordinates of endpoints
• B. Color values
• C. Attribute table
• D. Pixel values

Hint:

Distance in vector GIS is computed from \[ \boxed{ (x,y)\ \text{coordinates} } \] using standard coordinate geometry formulas.

Answer 1

The Correct Option is A

Concept: In vector GIS, distances are computed using the geometric coordinates of features. The X and Y coordinates of endpoints define the position and length of line segments.

Step 1: Understand vector geometry. Each line feature is represented by coordinate pairs such as \[ (x_1,y_1),\ (x_2,y_2). \] The distance between two points is calculated using \[ d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}. \]

Step 2: Identify the required data. Hence, \[ \boxed{\text{X and Y coordinates of endpoints are used to compute distances in vector networks}.} \] Therefore, the correct option is \[ \boxed{(A).} \]