GridCalculus2

GridCalculus2 performs various calculus operations on an existing grid. It provides you with tools to interpret your grid files and creates a new grid file of the generated data. Returns a Boolean. It returns 'True' if the data are generated successfully, otherwise, it returns 'False'.

Syntax

object.GridCalculus2( InGrid, Operation, Param1, OutGrid, OutFmt, OutGridOptions )

Parameter	Type	Required/ Optional	Default	Description
InGrid	String	Required		This provides the path and file name of the input grid file.
Operation	SrfCalculusOp	Required		This specifies the type of grid calculus operation.
Param1	Double	Optional		See Remarks
OutGrid	String	Optional	""	This provides the path and file name of the output grid file name
OutFmt	SrfGridFormat	Optional	srfGridFmtS7	This provides the output grid file format.
OutGridOptions	String	Optional	""	This provides the output option string for the grid format.

Remarks

Param1 is the angle if Operation equals srfGCFirstDeriv, srfGCSecondDeriv, or srfGCCurvature. Param1 is the threshold if Operation equals srfGCAspect, srfGCProfCurv, srfGCPlanCurv, or srfGCTanCurv.

Example 1

This example demonstrates how to create a new grid corresponding to the various slopes within demogrid.grd by performing the terrain slope calculus operation.

SurferApp.GridCalculus2(InGrid:=SurferApp.Path+"\Samples\demogrid.grd", _

Operation:=srfGCSlope, OutGrid:="c:\temp\dgrid1.grd", _

OutFmt:=srfGridFmtS7)

Example 2

This example demonstrates how to create a new grid corresponding to the various slopes within Conifer.grd, save the file as Calculus.grd and save the spatial references as Golden Software Reference (GSIREF) version 1 and version 2 files.

Surfer.GridCalculus2(InGrid:=InGridPath+"Conifer.grd", Operation:=srfGCSlope, OutGrid:=OutGridPath + "Calculus.grd", OutGridOptions:="UseDefaults=1, ForgetOptions=1, SaveRefInfoAsGSIREF=1, SaveRefInfoAsGSIREF2=1")

Example 3

This script displays all the methods in the Application object.

Used by: Application object