KNIME Expression Nodes version 4.3.0.v202011191431 by KNIME AG, Zurich, Switzerland
This node provides the possibility to append an
arbitrary number of
flow variables or modify existing variables using expressions.
that shall be appended or modified a separate expression
These expressions can be simply created using predefined
Nodes). Nevertheless there is no restriction on the number of lines
an expression has and the number of functions it uses. This allows
users to create their own complex expressions.
Additionally, intermediate results of functions or calculations can be stored within an expression by assigning them to variables (using '='). This allows that these results can be reused in different parts of the expression after they have been assigned (see Examples). Note: the names of these variables must be different to all of the predefined function identifiers. Otherwise an error will occur.
To change an expression of an output variable it has to be selected in the list of expressions. By selecting an expression the Expression Editor shows up and the user can modify the expression in the provided text area.
Available flow variables can be accessed via the provided method variable("varName"). For each expression the last computed instruction will be returned.
To use this node in KNIME, install KNIME Expressions from the following update site:
A zipped version of the software site can be downloaded here.
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