Grids Tab Commands

There are many ways to manipulate grid files in Surfer. The Grids ribbon contains commands used to assign the NoData value, convert, create, extract, filter, mosaic, slice, smooth, and transform grid files. In addition, volume calculations, variogram generation, calculus operations, cross section creation, and residual calculations can be performed using the commands on the Grids ribbon. Click on the Grids tab to access the commands on the ribbon.

Grid Data

Create a grid from irregularly spaced XYZ data

Grid from Server

Create a grid from downloaded DEM data

Grid from Contours

Create a grid from contour lines


Create a grid from a user-specified function


Create a new variogram and export a variogram

Assign NoData

Assign NoData to grid nodes inside or outside a boundary


Filter an existing grid by applying a moving matrix filter


Convert between various grid formats

Spline Smooth

Smooth an existing grid using cubic splines

Assign Coordinate System

Assign the coordinate system of a grid file and save the information to an external file


Create a grid in a different coordinate system


Perform calculus operations on an existing grid file


Compute the volume under or over a grid surface


Provide grid-to-grid and grid-to-constant math operations


Scale, offset, mirror, or rotate an existing grid file


Compute a cross section of data through a grid surface


Compute the difference between XYZ data and a grid surface

Point Sample

Compute the Z value at specified XY locations on the grid surface

Contour Volume and Area

Compute the volume and area above, below, and between contour lines


Create an isopach or isochore map


Combine a series of compatible input grids into a single output grid


Extract a subset of a grid from an existing grid file

Grid Editor

Change the values of nodes in a grid or edit the grid with various tools

Grid Info

Display information about the grid

See Also

Menu and Tab Commands