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How does the attributevaluemapper in FME work?
AttributeValueMapper Compares attribute values to a lookup table and assigns new values where matches are found. Mapped values may be stored in a new attribute, or overwrite an existing attribute, including the original source. View Documentation Try it Free in FME Desktop
How to assign random values to random points?
To assign random values to randomly placed points, first generate random points using this tool. Second, use the Add Field tool to create a new numeric field in the random points feature class. Suggested field types are long integer or float.
How to merge attributes and geometry in FME?
Merges the attributes and/or geometry of one set of features onto anot… Filters features by test conditions to one or more output ports. Creates features using the parameters supplied, and sends them into th… Download our fully-functional FME Desktop trial, free for 30 days.
How to create random points in a multipoint?
MULTIPOINT —The output will be geometry type multipoint (all points are a single feature). If create_multipoint_output is set to MULTIPOINT, specify the number of random points to be placed in each multipoint geometry. The default is 10. The following Python window script demonstrates how to use the CreateRandomPoints tool in immediate mode.
How is the attributevaluemapper driven by the lookup table?
The AttributeValueMapper is driven by a user-defined lookup table – the Value Map. One source attribute is selected, which will have its values compared to the lookup table to map new values. The new values may be stored in a new attribute (default behavior), or can overwrite an existing attribute (including the Source Attribute).
How is a value matched to a range in FME?
A value that could match more than one range will be output via the first one it encounters. Ranges are tested in the order they are defined in the parameters dialog, Range Lookup Table. For example, given the ranges 1 – 10 and 10 – 20, the value 10 will be matched to whichever of these ranges is listed first in the lookup table.
What should the default value be in FME?
The Default Value can be a constant or computed value (such as an attribute value), the value of a user parameter, the value of an FME parameter, or an expression containing the above. You can also enter a default value containing the word KEY (uppercase), where KEY will be substituted by the value of the Source Attribute.
How to map a range to an output range?
First, if we want to map input numbers in the range [0, x] to output range [0, y], we just need to scale by an appropriate amount. 0 goes to 0, x goes to y, and a number t will go to (y/x)*t.
What does floor ( ARG ) do in FME?
Returns the exponential of arg, defined as e to the power of arg. If an overflow occurs, infinity is returned. floor(arg) Returns the largest integer value not greater than arg, in 64-bit. If arg is out of range, null is returned.
How does the FME tester evaluate a feature?
The Tester accepts any feature. It evaluates each feature against one or more user-defined tests, and outputs the feature via the Passedport if it meets the defined conditions, or via the Failedport if it fails the defined conditions.
How to create a test clause in FME?
Depending on the type of test, at a minimum the clause will consist of a Left Valueand an Operator. If the chosen Operator needs more information (for example, testing for an attribute that is greater than certain value), a Right Valuefield is provided. The Test Clauses are created in a table, and numbered sequentially. Left Value Operator
How does FME route features to different ports?
Routes features to different output ports depending on the value of an attribute. The set of possible attribute values can be entered manually, or extracted from an input source in the properties dialog. Evaluates one or more tests on a feature, and routes the feature accor…