Transformer Quick-Reference

Transformer	Brief Description
2DArcReplacer	Replaces the geometry of the feature with a two-dimensional arc whose shape is set by the parameters, which can be either constant floating point values or the values of existing attributes.
2DBoxReplacer	Replaces the geometry of the feature with a two-dimensional box whose minimums and maximums are fixed values, or are taken from attributes in the original feature.
2DCreator	Replaced with the Creator.
2DEllipseReplacer	Replaces the geometry of the feature with a two-dimensional ellipse whose shape is set by the parameters.
2DForcer	Removes any elevation (Z) coordinates which may (or may not) have been present on the original feature.
2DGridCreator	Creates a grid of two-dimensional point features, at the origin and using the offsets specified.
2DGridReplacer	Replaces the input features with a grid of two-dimensional point features that have the specified spacing, and which cover (at least) the bounding box area of all the features that enter the transformer.
2DPointAdder	Adds a two-dimensional point as the last vertex of the feature. The ordinates are taken from attributes in the original feature.
2DPointReplacer	Replaces the geometry of the feature with a two-dimensional point whose ordinates are taken from attributes in the original feature.
3DAffiner	Performs 3D affine transformation on the coordinates of the feature.
3DArcReplacer	Replaces the geometry of the feature with a two-dimensional arc whose shape is set by the parameters, which can be either constant floating point values or the values of existing attributes.
3DCreator	Replaced with the Creator.
3DForcer	Sets all the Z coordinates of the feature to the value of the specified attribute (or the entered floating point number).
3DInterpolator	Interpolates elevation values along a linear feature from a starting value to an ending value.
3DPointAdder	Adds a three-dimensional point as the last vertex of the feature. The ordinates are taken from attributes in the original feature.
3DPointReplacer	Replaces the geometry of the feature with a three-dimensional point whose ordinates are taken from attributes in the original feature.
Affiner	Performs an affine transformation on the coordinates of the feature.
AffineWarper	Performs warping operations on the spatial coordinates of features. It is used to adjust a set of observed features so they more closely match some set of reference features.
AggregateFilter	Routes features differently depending on if their geometry consists of an aggregate of several primitive geometries, or if it is a simple, single piece geometry.
Aggregator	Combines feature geometries into aggregates. One aggregate feature is output for each unique combination of values of the attributes specified in the GROUP BY.
AnchoredSnapper	Snaps endpoints of features entering via the CANDIDATE port to endpoints of features entering via the ANCHOR port. ANCHOR features are not output.
AngleConverter	Converts angles of a feature's geometry and/or attributes from one representation to another.
ArcCreator	Replaced with Creator.
ArcEstimator	Replaces the geometry of the feature with a two-dimensional circular arc whose shape is estimated from the first, middle, and last point of the linear feature passed in.
ArcMeasureExtractor	Sets the given attributes to the values of the measure named by Source Measure Name.
ArcMeasureSetter	Sets measures on an arc geometry to the values given.
ArcPropertyExtractor	Sets the given attributes to the properties of an arc geometry.
ArcPropertySetter	Sets the properties of an arc geometry to those specified.
ArcSDEGridSnapper	Simulates the ArcSDE conversion on a feature by performing ArcSDE translation, scaling, and coordinate snapping.
ArcSDEQuerier	Performs queries on an ArcSDE spatial database. The queries can have both a spatial as well as nonspatial component.
ArcStroker	Converts arc features into lines replacing the feature geometry with a series of points interpolated along the arc boundary.
AreaBuilder	Forms area features from lines and optionally cuts out any resulting holes from their containers.
AreaCalculator	Calculates the area of a polygonal feature and adds it as a new attribute.
AreaFillColorSetter	Sets the fill color for the feature's area. Formats that support color will then render the interior feature in the set color.
AreaGeneralizer	Reduces the density of area feature boundary coordinates by removing points from the original feature while preserving the original coverage topology.
AreaOnAreaOverlayer	Performs an area-on-area overlay. All input areas are intersected against each other and resultant area features are created and output.
AreaSmoother	Smooths the feature's boundary lines by determining a new location for each vertex.
AttributeAccumulator	Combines feature attributes.
AttributeClassifier	Tests if the contents of the source attribute are entirely of a particular character classification, and routes the feature accordingly.
AttributeCopier	Copies the value of an attribute to a newly created attribute.
AttributeCreator	Adds an attribute to the feature, supplying it some constant value.
AttributeDereferencer	Copies the value of the attribute whose name is held in the source attribute to a newly created attribute.
AttributeExploder	This factory can either process and clone a feature, and produce a new pair of attributes in each cloned feature (attribute_name/attribute_value), or for each processed feature, create a new "list" attribute that contains (attribute_name/attribute_value) pairs.
AttributeExposer	Exposes a series of attributes.
AttributeExpressionRemover	Removes all attributes on incoming features that match a given regular expression.
AttributeFileReader	Reads the contents of a file and stores them as the value for the specified attribute.
AttributeFileWriter	Writes the contents of the specified attribute to a file.
AttributeFilter	Routes features to different output ports depending on the value of an attribute.
AttributeKeeper	Removes all attributes from the feature, except those chosen in the list.
AttributePrefixer	Adds a prefix or suffix to all attributes coming into the transformer.
AttributeRemover	Removes the attributes chosen from the feature. This is normally not necessary unless the feature will later be processed by a transformer that merges attributes onto it from other features.
AttributeRenamer	Renames a set of attributes.
AttributeReprojector	Reprojects attributes holding coordinate values from one coordinate system to another.
AttributeRounder	Rounds off an attribute to the specified number of decimal places.
AttributeSetter	Sets an existing attribute to a constant value.
AttributeSplitter	Gives values to a number of attributes (with the specified prefix) which result from splitting the source attribute's value at the delimiter character.
AttributeTrimmer	Removes any leading or trailing trim characters from the value contained in the source attribute and stores the resulting character string in the result attribute.
BaseConverter	Converts an attribute's value from one numeric system (base) to another, putting the resulting value in a new attribute.
BoundingBoxAccumulator	Creates bounding boxes for groups of features.
BoundingBoxReplacer	Replaces the geometry of the feature with a two dimensional box whose minimums and maximums are taken from the bounds of original feature.
BoundsExtractor	Extracts the minimum and maximum values of the feature's coordinates into new attributes.
Bufferer	Replaces the geometry of the feature with a area feature (polygon or donut polygon) that buffers the original feature (or a line feature that is some distance away from the original feature).
CaseChanger	Changes the case of attribute values. Supports conversions to UPPERCASE, lowercase, Title, and Full Title Case.
CenterLineReplacer	Replaces the geometry of an area feature with a line that threads through the center of the feature. Only works well with long, thin features.
CenterOfGravityReplacer	Replaces the geometry of the feature with a point that is the "center of gravity" of the feature.
CenterPointReplacer	Replaces the geometry of the feature with a point that is in the center of the feature's bounding box.
ChangeDetector	Detects changes between two sets of input features.
CharacterCodeExtractor	Extracts the integral character code of the first character in the source string attribute, and adds its integer value in the character set to the feature as another attribute.
CharacterEncoder	Sets the result attribute to the character whose numeric code was contained in the source code attribute (or the integer entered in).
Chopper	Ensures that all features output have less than or equal to <maximum vertices> vertices.
CircularityCalculator	Calculates the "circularity" of an area feature, which indicates how elongated the feature is.
Clipper	Performs a geometric clipping operation. Works on both raster and vector data.
Cloner	Makes copies of the features input and outputs all copies through its single output port.
ColorRasterCreator	Creates a feature with a raster of the specified size using the parameters supplied, and sends it into the workspace for processing.
CommonSegmentFinder	Tests to see which of the CANDIDATE features have even one segment in common with any BASE feature.
Concatenator	Concatenates the values of any number of attributes and constants together, and stores the result in a new attribute.
ContourGenerator	Generates contours from the underlying surface which is defined by the input POINTS, DEM_GRIDS, 3D_LINES, and BREAKLINES.
ConvexHullAccumulator	Creates convex hulls for groups of features.
ConvexHullReplacer	Replaces the geometry of the feature with a polygon representing its convex hull.
CoordinateConcatenator	Retrieves the value of all the feature's coordinates into an attribute, separated by the delimiter characters.
CoordinateCounter	Retrieves the value of the x, y, and z coordinate at the specified index into attributes.
CoordinateFetcher	Retrieves the value of the x, y, and z coordinate at the specified index into attributes.
CoordinateRemover	Removes one or more coordinates from the geometry of the feature.
CoordinateRounder	Rounds off the coordinates of the feature to the specified number of decimal places.
CoordinateSystemDescriptionConverter	This transformer converts coordinate system strings between representations.
CoordinateSystemFetcher	Retrieves the coordinate system of the feature into an attribute.
CoordinateSystemSetter	Tags all features with the given coordinate system.
CoordinateSystemRemover	Removes the coordinate system from all input features.
Counter	Adds an attribute holding the next integer in a sequence.
CRCCalculator	Calculates a CRC value as directed for a feature and places the calculated CRC value into the attribute specifed.
Creator	Creates features using the parameters supplied, and sends them into the workspace for processing. This transformer replaces the NullGeometryCreator, 2DCreator, 3DCreator, ArcCreator, and EllipseCreator.
CSGBuilder	Creates Constructive Solid Geometry (CSG) from pairs of solid geometry features.
CSGEvaluator	Replaces the geometry of a feature that has Constructive Solid Geometry (CSG).
CurveFitter	Smoothes features and reduces vertices by replacing line segments with arcs.
DateFormatter	Reformats a date or time string (in the Source Date attribute) into a new date format.
Deaggregator	Decomposes an aggregate feature into its components.
DecimalDegreesCalculator	Calculates a decimal degree value from separate degrees, minutes, and seconds (DMS) values, stored in attributes.
DEMGenerator	Generates a Digital Elevation Model (DEM) from the input POINTS, BREAKLINES, and 3D_LINES.
DEMDistanceCalculator	For each input line feature, a DEM is created after the reference DEM, and then output.
DEMRasterGenerator	Generates a DEM from the input POINTS, BREAKLINES, and 3D_LINES.
Densifier	Adds vertices to the feature by interpolating new coordinates along its definition at some interval of distance.
DimensionExtractor	Returns the dimension of the feature as a new attribute.
Dissolver	Dissolves area features by removing common boundaries to create larger areas.
DistanceSnipper	Shortens the geometry of a line feature by snipping off a specified amount from the ends.
DMSCalculator	Calculates degrees, minutes, and seconds (DMS) from a decimal degrees value stored in an attribute.
DonutBridgeBuilder	Builds connections between donut holes with the outer boundary of a donut, resulting in a polygon-equivalent representation of the input donut.
DonutBuilder	Cuts holes in polygonal features by making polygons completely enclosed in other polygons into holes of the containing polygon.
DonutHoleExtractor	Splits an area feature which has holes into its component rings.
DonutBridgeBuilder	Builds connections between donut holes with the outer boundary of a donut, resulting in a polygon-equivalent representation of the input donut.
DuplicateCoordinateRemover	Checks all elements of the geometry that are lines for duplicate coordinates. Any consecutive coordinates with the same location will be reduced to a single coordinate.
DuplicateRemover	Removes duplicate features based on the value of a key attribute.
ElevationExtractor	Extracts the elevation of the first coordinate and assigns it to the named attribute.
EllipsePropertyExtractor	Sets the given attributes to the properties of an ellipse geometry.
EllipsePropertySetter	Sets the properties of an ellipse geometry as specified.
EllipseCreator	Replaced with the Creator.
EnvelopeFilter	Replaced by the SpatialFilter transformer.
EnvironmentVariableRetriever	Retrieves the specified Environment Variable, and puts it into the specified Attribute.
ExpressionEvaluator	Evaluates an arithmetic expression and returns the result in a new attribute.
Extender	Creates extensions to linear features.
Extruder	Converts the face or donut or polygon of a feature to an extrusion geometry.
FaceReplacer	Replaces the geometry of a feature from donut or polygon to face.
FeatureHolder	Stores incoming features until they have all arrived, and then releases them in their original order.
FeatureMerger	Merges the attributes of one feature onto another feature.
FeatureTypeExtractor	Adds an attribute containing the original feature type of a feature.
FeatureTypeFilter	Separates the features routed to it into their original feature types, if possible.
FMEFunctionCaller	Calls the specified FME Function, optionally putting the resulting value in the Result Attribute.
GeometryCoercer	Resets the geometry type of the feature.
GeometryExtractor	Extracts the geometry of a feature and encodes it as FME Binary, hexadecimal-encoded FME Binary, FME XML, OGC Well Known Text (wkt), Well Known Binary (wkb), or hexadecimal-encoded Well Known Binary (wkbhex), depending on the setting of the geometry encoding parameter.
GeometryFilter	Routes a feature based on its geometry type.
GeometryRefiner	Performs the following "refinements" on features' geometry: - Any homogeneous IFMEAggregate will become a multi (IFMEMultiCurve, IFMEMultiArea, IFMEMultiPoint, or IFMEMultiText). - Any IFMEAggregate or multi with only one member will be replaced by its single part. - Any IFMEDonut with no holes will become an IFMEPolygon or IFMEEllipse. - Any IFMEPath with only one segment will be replaced by that segment. - Consecutive IFMELine segments within an IFMEPath will be combined
GeometryRemover	Completely removes the geometry of the feature.
GeometryReplacer	Replaces the geometry of each feature with the one defined by the Geometry parameter.
GeometryTraitFetcher	Copies a series of geometry traits into feature attributes.
GeometryTraitRemover	Removes traits from geometry.
GeometryTraitSetter	Copies attributes from a feature to its geometry.
GeometryValidator	Evaluates the simplicity or validity of a geometry feature, and routes the feature according to the outcome of the test(s).
GeoRSSFeatureExtractor	Constructs GeoRSS documents from the input features and stores them in the specified attribute for the features that are output by the GeoRSS port.
GeoRSSFeatureReplacer	Constructs features out of GeoRSS documents/URLs that are stored in an attribute of the input features.
GlobalVariableRetriever	Replaced by VariableRetriever.
GlobalVariableSetter	Replaced by VariableSetter.
GMLFeatureExtractor	Constructs GML documents from the input features and stores them in the specified attribute for the features that are output by the GML port.
GMLFeatureReplacer	Constructs features out of GML documents that are stored in an attribute of the input features.
GOIDGenerator	Calculates a GOID (Geographic Object IDentifier) for each incoming feature, and adds it as a new attribute. The GOID is a unique 128-bit number that incorporates the position of a feature with other numbers.
GtransAttributeReprojector	Reprojects attributes holding coordinate values from one coordinate system to another using the Gtrans reprojection library and the specified translation file.
GtransReprojector	Reprojects features using the Gtrans reprojection library and the specified translation file.
HexDecoder	Decodes the given attribute into a new attribute, by converting its encoded hexadecimal value into a new ASCII string. Decodes a value that has been encoded from the HexEncoder.
HexEncoder	Encodes the given attribute into a new attribute, by converting its ASCII value into a hexadecimal string. Can be undone with the HexDecoder.
HoleCounter	Adds a new attribute whose value is the number of holes in the feature.
HTTPDeleter