squareGridsInPolygons

Generates square grids located in the polygons of the input polygon dataset. The cell size for each polygon can be the same or different - based on the values in a numeric field of the input polygon feature class. The user can specify the rotation angle for the resulting square grids.

Inputs:

A polygon feature class
The cell size of the grid for each polygon can be input in one of the following ways
- A numeric field which values will define the cell size for the grid for each polygon.
- A constant number that defines the cell size (the same for all polygons)
Rotation angle
- Constant for all polygons - (in degrees starting from East anti-clockwise)
- From field - different rotation angle for each field (in degrees starting from East anti-clockwise)
- Along the longest axis of each polygon
- Along the longest side of each polygon
Squares completely inside the polygons
- if TRUE - no square will intersect the polygon boundary.
- If FALSE - the centers of the squares will be inside the polygons, but the squares might intersect the polygon boundary

Outputs:

New Polygon feature class.
The following fields are added to the attribute table of the resulting feature class.
- [ET_ID] - the ID of the original polygon

Illustration:

Cell size = 10, Rotational angle = "Along the longest side"
Completely inside = TRUE

sqGrid1

Original polygons labeled with the values in field to be used as a source for the Cell Size.
Rotational angle = "Along the longest Axis"
Completely inside = FALSE

Original polygons labeled with the values in field to be used as a source for the Cell Size.
Rotational angle = 0
Completely inside = TRUE

ToolBox implementation
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Command line syntax

ET_GPSquareGridsInPolygons<input_dataset> <out_feature_class> {side_length} {side_length_field} {angle_from} {rotation_angle} {angle_field} {inside_only}

Parameters

Expression	Explanation
<input_dataset>	A Polygon feature class or feature layer
<out_feature_class>	A String - the full name of the output feature class.
{side_length}	A Double representing the cell size for all polygons
{side_length_field}	A String representing the name of a numeric field which values will be used to get the cell size for each polygon
{angle_from}	A String defining how the rotation angle will be specified "Constant" - Constant for all polygons - (in degrees starting from East anti-clockwise) "From field" - different rotation angle for each field (in degrees starting from East anti-clockwise) "Longest Axis" - Along the longest axis of each polygon "Longest Side" - Along the longest side of each polygon
{rotation_angle}	A Double - specifying the rotation angle for all polygons.
{angle_field}	A String - the name of the field to be used as source for rotation angle.
{inside_only}	A Boolean defining whether the resulting square can intersect the polygon boundary or not.

Scripting syntax

ET_GPSquareGridsInPolygons(input_dataset, out_feature_class, side_length, side_length_field, angle_from, rotation_angle, angle_field, inside_only)

See the explanations above:
<> - required parameter
{} - optional parameter