Creates polygons from input raster features. One polygon is output for each contiguous area of pixels with the same value in the input raster.
Parameters
Extract Nodata Values
Specifies whether polygons will be output for nodata areas in the raster.
A cell is considered to be nodata when, for each selected band, the value for that cell is equal to that band's nodata value. If any cell value is not equal to that band's nodata value, the cell will be considered data.
Preserve Attributes
Specifies whether the output vector features should retain attributes from the input raster feature.
Label Attribute
Specifies the name of an attribute that will be created on every output feature describing the polygon.
The label will be a comma-separated list of the band values covered by that polygon. For example, the label for a raster with three bands might be something like 64,128,255.
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.
Transformer Categories
FME Licensing Level
FME Professional edition and above
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