2DGridCreator

Creates a regular grid of points or rectangular polygons of a specified size, position, and coordinate system.

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Typical Uses

  • Creating reference grids

  • Creating clipping polygons

How does it work?

The 2DGridCreator creates a single grid of regularly spaced features, which may be composed of:

  • rectangular polygons,

  • points at the corners of each cell, or

  • points at the center of each cell.

Cell size is specified by Column Width and Row Height, in the units of the specified Coordinate System.

A Starting Corner is selected (Lower Left is the default), along with a Starting X and Y Coordinate. Grid cells are calculated and numbered from this point accordingly for a specified number of columns and rows.

This transformer does not receive input features.

Examples

Usage Notes

Creating Boxes and Rectangles

Creating rectangular geometry is a common task. These transformers do so in a variety of ways.

Transformer

Function

Creator

Creates one or more new features with box geometry of a specific size and position (when Geometry Object is Box).

2DBoxReplacer

Replaces an existing feature’s geometry with a box of a specific size and position.

BoundingBoxAccumulator

Creates one rectangle that encompasses all features received.

BoundingBoxReplacer

Individually replaces the geometry of each feature with a rectangle that covers its extents.

RasterExtentsCoercer

Individually replaces the geometry of each raster feature with a rectangle that covers its extents (with various Extents Type options).

BoundsExtractor

Extracts the coordinate values that describe an individual feature’s bounding box (or cube) and stores them as attributes.

2DGridAccumulator

Creates a series of regularly-spaced rectangles that span the extent of all features received (when Type of Grid to Create is Polygons).

2DGridCreator

Creates a series of regularly-spaced rectangles of a specific size and position (when Type of Grid to Create is Polygons).

Tiler and RasterTiler

Do not create actual rectangles, but chop features into a series of rectangular tiles, specified in a similar fashion to the 2DGridAccumulator.

Configuration

Input Ports

This transformer has no input ports.

Output Ports

Parameters

Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Defining Values

There are several ways to define a value for use in a Transformer. The simplest is to simply type in a value or string, which can include functions of various types such as attribute references, math and string functions, and workspace parameters. There are a number of tools and shortcuts that can assist in constructing values, generally available from the drop-down context menu adjacent to the value field.

Dialog Options - Tables

Transformers with table-style parameters have additional tools for populating and manipulating values.

Reference

Processing Behavior

Not applicable.

Feature Holding

Not applicable.

Dependencies

None

Aliases

History

 

FME Community

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Examples may contain information licensed under the Open Government Licence – Vancouver and/or the Open Government Licence – Canada.