CoordinateConcatenator

Example: Concatenating coordinates on area geometries

In this example, we have a shapefile of parks, and want to extract their coordinates into an attribute. Note that they are in a UTM coordinate system, with ground units in meters.

The features are routed into a CoordinateConcatenator.

In the parameters dialog, the default settings are kept. Note the delimiters - pipe (|)and comma (,).

X, Y, and Z coordinates are requested by default. Our data is 2D, so the Z will be ignored and these default settings are fine.

The output features have a new _coordinates attribute.

On closer examination of the attribute value, we see the coordinates of the polygon, separated by pipe delimiters. Note that the first and last coordinate are identical - indicating a closed area.

Example: Using special characters as delimiters for formatting

We can use special characters as delimiters to control formatting.

Using the previous example, in the parameters dialog, we access the Text Editor via the dropdown menu on the Coordinate Delimiter parameter.

The default pipe delimiter is replaced with a carriage return character.

The output attribute value now contains coordinates separated by line, which could be written to a text file with an AttributeFileWriter or used elsewhere.

Input

Features with point, line, area, or donut geometry.

Output

Features with coordinates added to an attribute as specified in parameters.

General

Coordinate Delimiter

Specify a character or string to be inserted between each set of coordinates.

Coordinate Element Delimiter

Specify a character or string to be inserted between each component (x, y, z) of a set of coordinates.

Coordinate Element(s) to Include

Select which elements of a coordinate - x, y, and/or z - to include.

If z coordinates are requested, but the data is 2D (has x and y only), z will be ignored.

Output Attribute Name

Concatenated Coordinates

Name the attribute to store the resulting coordinate values string.

How to Set Parameter Values

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.

Using the Text Editor

The Text Editor provides a convenient way to construct text strings (including regular expressions) from various data sources, such as attributes, parameters, and constants, where the result is used directly inside a parameter.

Text Editor

Using the Arithmetic Editor

The Arithmetic Editor provides a convenient way to construct math expressions from various data sources, such as attributes, parameters, and feature functions, where the result is used directly inside a parameter.

Arithmetic Editor

Conditional Values

Set values depending on one or more test conditions that either pass or fail.

Parameter Condition Definition Dialog

Content

Expressions and strings can include a number of functions, characters, parameters, and more.

When setting values - whether entered directly in a parameter or constructed using one of the editors - strings and expressions containing String, Math, Date/Time or FME Feature Functions will have those functions evaluated. Therefore, the names of these functions (in the form @<function_name>) should not be used as literal string values.

Content Types

String Functions	These functions manipulate and format strings.
Special Characters	A set of control characters is available in the Text Editor.
Math Functions	Math functions are available in both editors.
Date/Time Functions	Date and time functions are available in the Text Editor.
Math Operators	These operators are available in the Arithmetic Editor.
FME Feature Functions	These return primarily feature-specific values.
FME Parameters	FME and workspace-specific parameters may be used.
Creating and Modifying User Parameters	Create your own editable parameters.

Dialog Options - Tables

Table Tools

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

Row Reordering

Enabled once you have clicked on a row item. Choices include:

Add a row
Remove a row
Move current row up one
Move current row down one
Move current row to top
Move current row to bottom

Cut, Copy, and Paste

Enabled once you have clicked on a row item. Choices include:

Cut a row - delete and copy to clipboard
Copy a row to the clipboard
Paste a row from the clipboard

Cut, copy, and paste may be used within a transformer, or between transformers.

Filter

Start typing a string, and the matrix will only display rows matching those characters. Searches all columns. This only affects the display of attributes within the transformer - it does not alter which attributes are output.

Import

Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers.

Reset/Refresh

Generally resets the table to its initial state, and may provide additional options to remove invalid entries. Behavior varies between transformers.

Note: Not all tools are available in all transformers.

Processing Behavior	Feature-Based
Feature Holding	No
Dependencies	None
Aliases
History

CoordinateConcatenator

Typical Uses

How does it work?

Examples

Usage Notes

Configuration

Input Ports

Output Ports

Parameters

Editing Transformer Parameters

Reference

FME Community