This article contains a sample script for creating a GRD file with user defined grid spacing.

To run this script:

1. Copy the script below, or download the attached BAS file: GridSpacing.bas.
     Note: If you're running Surfer 12 or an earlier version, download GridSpacing_S12.bas.
2. In a Windows Explorer window, navigate to C:\Program Files\Golden Software\Surfer.
3. Double click on Scripter.exe to launch Scripter.
4. Press Ctrl+A to select all of the existing lines then press DELETE.
5. If you copied this script, press Ctrl+V to paste it into Scripter. If you downloaded it, click File | Open, select the BAS file from your downloads directory, and click Open.
6. Change the values in the User-defined variables section as desired.
7. Click Script | Run to run the script.
    

'=====================================================
'GridSpacing.bas
'=====================================================
'Creates a GRD file with user defined grid spacing.
'This script is for only Surfer 13 and later. Surfer 12 and earlier did not have the grid spacing option.
'=====================================================

Sub Main

'Gets the existing Surfer instance. If Surfer isn't open, it opens it.
    On Error GoTo createnew
  	Set SurferApp = GetObject(, "Surfer.Application")
    On Error GoTo 0
	GoTo skipnew
	createnew:
	Set SurferApp = CreateObject("Surfer.Application")
	SurferApp.Visible = True
	skipnew:

'=====================================
'User-defined variables
'=====================================
'Specifies the file path where the data file to grid resides
    path1 = "c:\program files\golden software\surfer 16\samples\"

'Specifies the data file
    infile1 = path1+"demogrid.dat"

'Specifies the file to save the output grid to
    outfile1 = path1+"demogrid.grd"

'Specifies the grid spacing
    gridspacing =  0.1
'=====================================
'Creates a plot document window
    Set Plot = SurferApp.Documents.Add

'Grids the data
    SurferApp.GridData4(DataFile:=infile1, xSize:=gridspacing, ySize:=gridspacing, Outgrid:=outfile1)

'Creates a contour map
    Plot.Shapes.AddContourMap(outfile1)
End Sub

Updated November 8, 2018