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.
You want to see the source code for this node? Click the following button and we’ll use our super-powers to find it for you.
A zipped version of the software site can be downloaded here.
Do you have feedback, questions, comments about NodePit, want to support this platform, or want your own nodes or workflows listed here as well? Do you think, the search results could be improved or something is missing? Then please get in touch! Alternatively, you can send us an email to email@example.com, follow @NodePit on Twitter, or chat on Gitter!
Please note that this is only about NodePit. We do not provide general support for KNIME — please use the KNIME forums instead.