Decomposes all input numeric raster features into individual points or polygons. One vector feature is output for each cell in the band.
Parameters
Output Cell Geometry
Points: one point feature will be created for each of the raster's cells, positioned at the cell's origin.
Polygons: polygon features will be output, each one covering one of the raster's cells.
Extract Band Values As
Attributes: One feature will be output per cell in the raster. Band and palette values will be stored in attributes named _band{}.value and _band{}.palette{}.value. The output geometry will be 2D.
Z Values: One feature will be output per band per cell in the raster. The output geometry will be 3D, where the z value is the band value.
Extract Nodata Values
Specifies whether point features will be output for nodata cells in the raster. When set to yes, a point feature will be output for each nodata cell. When set to no, point features will not be output for nodata cells in the raster.
Preserve Attributes
Specifies whether each point will retain the attributes from the input raster.
Raster ID Attribute, Band ID Attribute
当指定,每个点或多边形收到raster ID and a band ID which correspond to the raster and band from which the vector feature originated.
Column Attribute, Row Attribute
当指定,每个点或多边形收到row and a column attribute, specifying the cell for which the feature was created. Row 0, Column 0 corresponds to the upper-left corner.
Usage Notes
This transformer supports raster band selection. TheRasterSelectorcan be used to modify this selection.
When Extract Band Values is set to Z Values, each selected band must not contain a palette.
Example
Editing Transformer Parameters
使用一组菜单选项,变压器参数s 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
Transformer History
This transformer was previously known as the RasterToPointCoercer, RasterPointExtractor, or GridPointExtractor.
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TagsKeywords: GridPointExtractor RasterPointExtractor RasterToPointCoercer