Expands or shrinks the boundary segments in the input geometry by a specified amount, and if necessary, connects them using stroked arcs.
This transformer works much the same way as the standard Bufferer, but is designed for use with features in Geographic coordinates. The transformer reprojects the features into the Dynamic Equal Distance projection, buffers them, then reprojects back into the original Geographic coordinates.
Only 2D geometries are accepted as input.
Each point in the output curve will be the specified amount, measured in the specified units, away from the input geometry. If the specified buffer amount is too small, a feature with a null geometry is output.
This parameter specifies the measurement units used by the Buffer Distance parameter.
If a positive (negative) buffer amount is specified, the input feature is expanded (shrunk). A buffer amount of 0 will leave the input geometry unmodified.
When buffering a line, there is the additional concept of end caps on both ends of a buffered line. As the diagrams below illustrate, these caps can be round or square but it is also possible for the buffered area to not contain any caps.
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.
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