FME Transformers: 2024.2

Categories
Geometries

Geometries

Categories
Geometries

Geometries

MeasureSetter

Sets measure(s) on a point, line, arc, area geometry or a vertex of a linear geometry to attribute value(s) of given attribute(s) or list attribute.

Configuration

Output Ports

Features that have had measure(s) set on their geometry.

If the input feature's geometry type does not match the value chosen in the Type parameter, the feature will be rejected.

Parameters

Type

The Type parameter selection will determine which of the other parameters is enabled for this transformer.

All Vertices to Same Value: Sets the measure of all vertices of the geometry to the value or value of the attribute specified in Measure Value of Point or Vertex.

Individual Vertex by Index: Sets the measure of a point, curve, or area at the vertex specified by the Index to the value or attribute value specified in Measure Value of Point or Vertex. A negative index can be used to indicate the position of the vertex in which the measure is to be set relative to the end of the geometry (-1 is the last coordinate, -2 the second last, and so on). If the geometry of a feature is a point, then only index 0 or index -1 can be used to retrieve the measure value. Any geometry other than a point, curve or area is rejected.

Point: Sets the measure of the point to the value or value of the attribute specified in Measure Value of Point or Vertex.

Whole Line or Whole Area: Sets the measure of a line or area to the values of the list attribute specified in Source Measure List Attribute of Line or Area. The number of elements in the list attribute must match the number of points of the line or area. A Path geometry or path boundary of an area is ignored. A PathSplitter transformer can be used to split a path to its respective segments in order to set the measure(s) on each segment separately. A PathBuilder can also be used to join the segments back into a path.

End Points of Arc: Sets the measure of the start and end points of an arc to the values or values of the attributes specified in Start Point Measure Value of Arc and End Point Measure Value of Arc respectively.

Measure Value of Point or Vertex

This parameter is used when the Type is All Vertices to Same Value, Individual Vertex by Index or Point.

Index

This parameter is used when the Type is Individual Vertex by Index.

Source Measure List Attribute of Line or Area

This parameter is used when the Type is Whole Line or Whole Area.

Start Point Measure Value of Arc

This parameter is used when the Type is All Vertices to Same Value.

End Point Measure Value of Arc

This parameter is used when the Type is End Points of Arc.

Destination Measure Name

If not specified, the default measures will be set.

Editing Transformer Parameters

Transformer parameters can be set by directly entering values, using expressions, or referencing other elements in the workspace such as attribute values or user parameters. Various editors and context menus are available to assist. To see what is available, click beside the applicable parameter.

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.

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.

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.

For more information, see Transformer Parameter Menu Options.

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