Dataset Gridding
The gridding is either nearest neighbour, linear, cubic (all from scipy) or minimum curvature. The input is a point or line dataset, imported from the vector menu. Note that the x and y columns are defined when importing the line or point data.
Options
- Gridding method - This can be nearest neighbour, linear, cubic or minimum curvature.
- Cell size - This represents the size of a square raster grid cell, in the units of the grid (normally meters).
- Column to grid - This allows you to select the z column to grid.
- Null value - masked data value.
- Blanking distance - This is a distance in cells from data points, beyond which the grid will be masked.
References
Briggs, I. C., 1974, Machine contouring using minimum curvature, Geophysics vol. 39, No. 1, pp. 39-48