Hi everyone,
I have a dataset that contains polygons over a large area with individual attribute values assigned to each, I want to:
- overlay a grid on top of the polygons layer
- calculate a value based on the individual value each polygon is assigned and the percentage of coverage it has within each cell
i.e.
polygon 1 = 3.3
polygon 2 = 2.2
polygon 3 = 1.5
polygon 1 = 25% coverage within cell 1,1
polygon 2 = 25% coverage within cell 1,1
polygon 3 = 50% coverage within cell 1,1
value of cell 1,1
3.3/100 * 25 = .825
2.2/100 * 25 = .55
1.5/100 * 50 = .75 = .825 + .55 + .75 = 2.125
- Assign the calculated value to that grid cell.
If anyone could give me some input into how i can go about doing this it would be much appreciated!
Thanks!