描述
This function can be used to find the mean value for all the cells found within the defined region of a grid (all cell values are added together and then divided by the total number of cells that make the region), as shown in the image below:
语法：
ds_grid_get_mean(index, x1, y1, x2, y2);
| 参数 | 描述 |
|---|---|
| index | 栅格的索引 |
| x1 | The left cell column of the region. |
| y1 | The top cell row of the region. |
| x2 | The right cell column of the region. |
| y2 | The bottom cell row of the region. |
返回：
Real or String
例如：
val = ds_grid_get_mean(grid, 0, 0, 5, 5)
The above code will set the variable "val" to the mean value contained within the given region of the ds_grid indexed in the variable "grid".