PointGridWizard

Point Grid

Creates a grid of points using user defined grid type and distance between the points.

Grid creation options:
- Initial extent of the grid and cell size
- Origin point of the grid, cell size, number of rows and columns.
Output spatial reference - can be assigned based on a reference layer used.
Grid type
- Square
- Rectangle
- Triangle - equilateral
Distance between the points - in the case of rectangle X and Y spacing are required

The initial extent of the grid is defined by the extents of the selected reference layer or manually
The cell size will be in the units of the reference layer or "Unknown" if no reference layer is used.
In order to avoid incorrect inputs, the size of the grid is limited to 8,000,000 cells
A ET_Index field will be added to the point attribute table to indicate the index of each point in the Grid. The point in the bottom left corner of the Grid will have an index of "0-0"

Two different functions are available for the Vector Grid creation

Expression	Explanation
Function Name	PointGridExtent
<output dataset>	A String - the full name of the output layer.
<Grid Type>	Required. A String indicating the type of the grid to be created. Valid values: "Triangle" "Square" "Rectangle"
<Cell SizeX>	A Double - the cell size in X direction.
<Cell SizeY>	A Double - the cell size in Y direction.
<Extents From Reference>	A Boolean indicating whether the extents of the grid will be taken from a reference dataset.
{Reference Dataset}	A String - the full name of the reference dataset.
{MinX}	A Double - minimum X of the extent.
{MinY}	A Double - minimum Y of the extent.
{MaxX}	A Double - maximum X of the extent.
{MinX}	A Double - maximum Y of the extent.

ETGWPath used in the table below is the full path to ETGWRun.exe (E.G. "C:\Program Files\ETSpatial Techniques\ETGeo Wizards\ETGWRun.exe")

Language	Syntax
Python	subprocess.call([ETGWPath, "PointGridExtent", "output dataset", "Grid Type", "Cell SizeX", "Cell SizeY", "Extents From Reference", "Reference Dataset"])
.NET using ETGWRun.exe	StartInfo.FileName = ETGWPath StartInfo.Arguments = "PointGridExtent" "output dataset" "Grid Type" "Cell SizeX" "Cell SizeY" "Extents From Reference" "Reference Dataset"
.NET using ETGWOutX.dll	PointGridExtent(output dataset, Grid Type, Cell SizeX, Cell SizeY,Extents From Reference, Reference Dataset)
ArcPy	arcpy.PointGridExtent(output dataset, "Grid Type" , "Cell SizeX", "Cell SizeY", "Extents From Reference", "Reference Dataset")

Expression	Explanation
Function Name	PointGridOrigin
<output dataset>	A String - the full name of the output layer.
<Grid Type>	Required. A String indicating the type of the grid to be created. Valid values: "Triangle" "Square" "Rectangle"
<Cell SizeX>	A Double - the cell size in X direction.
<Cell SizeY>	A Double - the cell size in Y direction.
<Number Columns>	An Integer - the number of columns to be created.
<Number Rows>	An Integer - the number of rows to be created.
<Origin From Reference>	A Boolean indicating whether the origin point of the grid will be taken from a reference dataset.
{Reference Dataset}	A String - the full name of the reference dataset.
{Lower LeftX}	A Double - X of the lower left corner of the extent.
{Lower LeftY}	A Double - Y of the lower left corner of the extent.

ETGWPath used in the table below is the full path to ETGWRun.exe (E.G. "C:\Program Files\ETSpatial Techniques\ETGeo Wizards\ETGWRun.exe")

Language	Syntax
Python	subprocess.call([ETGWPath, "PointGridOrigin", "output dataset", "Grid Type", "Cell SizeX", "Cell SizeY","Number Columns","Number Rows", "Origin From Reference", "Reference Dataset"])
.NET using ETGWRun.exe	StartInfo.FileName = ETGWPath StartInfo.Arguments = "PointGridOrigin" "output dataset" "Grid Type" "Cell SizeX" "Cell SizeY" "Number Columns" "Number Rows" "Origin From Reference" "Reference Dataset"
.NET using ETGWOutX.dll	PointGridOrigin(output dataset, Grid Type, Cell SizeX, Cell SizeY,Number Columns, Number Rows, Origin From Reference, Reference Dataset)
ArcPy	arcpy.PointGridOrigin(output dataset, "Grid Type" , "Cell SizeX", "Cell SizeY", "Number Columns", "Number Rows", "Origin From Reference", "Reference Dataset")

Notes:

<> - required parameter
{} - optional parameter
See examples for Python , .NET or ArcPy
The argument separator for StartInfo.Arguments is space. If a string might contain a space, you need to double quote it.