PointPropertyExtractor

Categories

Calculated Values

Related Transformers

PointPropertySetter

Extracts point orientation to feature attributes.

Input Ports

Features with point geometries.

Output Ports

Features with newly set attributes based on point orientation. No attributes are added to features containing points with no orientation.

Note: Feature order may change in relation to other output ports. Feature order per port is maintained.

Parameters

Transformer

Specifies the representation to use when extracting point orientation. The following representations are supported:

  • 2D Rotation: Extracts orientation as a rotation around the Z-axis, in degrees CCW from the X-axis.
  • Normal + Spin: Extracts orientation as a unit vector (normal) indicating pitch and yaw, and an angle (spin), in degrees, indicating roll (right hand rule).
  • Axis Angle: Extracts orientation as a rotation, in degrees (right hand rule), around an axis of rotation specified by a unit vector.
  • Azimuth + Altitude: Extracts orientation in degrees CW from the positive Y-axis (azimuth), and degrees from the XY plane (altitude).
  • Matrix: Extracts orientation as a 3x3 rotation matrix.
  • Quaternion: Extracts orientation as a unit quaternion (versor).
  • Euler Angles: Extracts orientation as angles A, B, and Y, representing, in order, rotations around the Z-axis, X’-axis, and Z’’-axis (intrinsic rotations, right-hand rule).
  • Tait Bryan Angles: Extracts orientation as angles yaw, pitch, and roll, representing, in order, rotations around the Z-axis, Y’-axis, and X’’-axis (intrinsic rotations, right-hand rule).

2D Rotation Parameters

Name of the attribute on which to store 2D rotation.

Normal + Spin Parameters

Name of the attribute on which to store the X component of the normal.

Name of the attribute on which to store the Y component of the normal.

Name of the attribute on which to store the Z component of the normal.

Name of the attribute on which to store spin.

Axis Angle Parameters

Name of the attribute on which to store the X component of the axis.

Name of the attribute on which to store the Y component of the axis.

Name of the attribute on which to store the Z component of the axis.

Name of the attribute on which to store the degrees of rotation around the axis (right hand rule).

Azimuth Altitude Parameters

Name of the attribute on which to store azimuth.

Name of the attribute on which to store altitude.

Matrix Parameters

Name of the attributes on which to store the coefficients of the transformation matrix:

x' = Ax + By + Cz

y' = Dx + Ey + Fz

z' = Gx + Hy + Iz

Quaternion Parameters

Name of the attribute on which to store the x coefficient.

Name of the attribute on which to store the y coefficient.

Name of the attribute on which to store the z coefficient.

Name of the attribute on which to store the w coefficient.

Euler Angles Parameters

Name of the attribute on which to store the first rotation, around the Z-axis.

Name of the attribute on which to store the second rotation, around the X’-axis.

Name of the attribute on which to store the third rotation, around the Z’’-axis.

Tait Bryan Angles Parameters

Name of the attribute on which to store yaw.

Name of the attribute on which to store pitch.

Name of the attribute on which to store roll.

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.

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.

Dialog Options - Tables

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.

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