This function can be used to find the maximum value for all the cells found within the defined disk area of a grid, as shown in the image below:
ds_grid_get_disk_max(index, xm, ym, r);
|xm||The x position of the disk center in the grid.|
|ym||The y position of the disk center in the grid.|
|r||The radius of the disk in the grid.|
Real or String
val = ds_grid_get_disk_max(grid, 5, 5, 2)
The above code will set the variable "val" to the maximum value contained within the given disk of the ds_grid indexed in the variable "grid".