Extracts the band minimum and maximum values, palette minimum and maximum keys and palette minimum and maximum values of a raster feature and exposes them as attributes.
The attribute values are for reference only at one point in the workspace and may become out of date if the raster properties change.
The following band and palette properties are exposed:
_band{}.min
_band{}.max
_band{}.palette{}.keyMin
_band{}.palette{}.keyMax
_band{}.palette{}.valueMin
_band{}.palette{}.valueMax
Note that wherever "{}" appears, there will be one instance of the attribute for each band or palette. The first will appear with {0}, the second with {1}, and so on.
这个转移mer only extracts band and palette minimum and maximum properties. To extract other band properties, use theRasterBandPropertyextractor.. To extract raster geometry properties, such as the number of rows and columns, use theRasterPropertyExtractor.
Usage Notes
- 这个转移mer accepts only raster features.
- Note that the any nodata values that are present on the band are ignored in the minimum and maximum value calculations.
- 这个转移mer is unaffected by raster band and palette selection.
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, seeTransformer Parameter Menu Options.
Transformer Categories
FME Licensing Level
FME Professional edition and above
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