Offsetter
Adds offsets to the feature's coordinates.
After you connect the transformer, you can enter parameter values as a number or pick the value of a feature attribute by picking Set to Attribute Value from the Parameter menu.
The feature will be shifted by the amounts specified.
Parameters
Mode
The mode in which to offset feature coordinates.
Cartesian Coordinate Parameters
X Offset, Y Offset, and Z Offset
A separate offset must be set for each of the X, Y, and Z axes. If the input feature is 2D and a Z offset is specified, the feature is converted to 3D, and the Z offset is applied from a starting Z value of zero. If the input feature is a raster, only X and Y offset values will cause coordinate location shifts. The Z offset will cause the values in the cells of the raster to be offset by the specified amount for each selected band.
Polar Coordinate Parameters
Distance
The distance to offset the feature.
Polar Angle
Angle in degrees CCW from the positive X-axis.
Spherical Coordinate Parameters
Distance
The distance to offset the feature.
Azimuth
Angle in degrees CW from the positive Y-axis.
Altitude
Angle in degrees from the XY plane. The angle between the XY plane and the positive Z-axis is 90 degrees.
Point Cloud
Component
Specifies a component to offset on point cloud features. Note that the x, y, and z components can be offset using the X Offset, Y Offset, and Z Offset parameters. This parameter is intended for non-spatial components (for example, intensity).
If the same component occurs multiple times in the table, each of the Offset values will be added to that component's value.
Offset
The offset that will be applied to the corresponding point cloud component.
Usage Notes
This transformer works with both raster and vector
data.
This transformer supports raster band and palette selection. The RasterSelector can be used to modify selection.
Examples
This example shows an image offset using the x and y parameters:
This example shows an image offset using the x and y 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.
How to Set Parameter Values
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.
Dialog Options - Tables
Transformers with table-style parameters have additional tools for populating and manipulating values.
Table Tools
Row Reordering
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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
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Cut, Copy, and Paste
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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.
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Filter
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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.
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Import
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Import populates the table with a set of new attributes read from a dataset. Specific application varies between transformers. |
Reset/Refresh
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Generally resets the table to its initial state, and may provide additional options to remove invalid entries. Behavior varies between transformers.
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Note: Not all tools are available in all transformers.
FME Community
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Search for samples and information about this transformer on the FME Community.
Keywords: raster vector coordinates offset pointcloud