R To R

Takes the R workspace from the input port and modifies it according to the entered R script. The node outputs an R workspace containing the updated variables.

More details about R:
http://www.r-project.org/
Short-refcard.pdf

Options

R Snippet

R Script

The code being executed in R. Code may be executed in full or in part using the Evaluate Script and Evaluate Selection options, respectively. Output is printed to the console.

Column List

The list contains the column that are available in the input table. Double click any of the column names to insert the respective field in the expression editor. It will replace your current selection or simply insert at the current caret position.

Flow Variable List

The list contains the flow variables that are currently visible to the node. Double clicking any of the entries will insert the respective identifier at the current cursor position in your expression editor, replacing the current selection.

Templates

Category

A template category defined by the author.

Title

Name of the template.

Description

A brief overview of the purpose of the template.

Preview

The code to be applied to your expression editor.

Advanced

Overwrite default path to R home

Check this option to select a path to the home of a R installation that is different from the path configured on the R preference page. The path must point to the root folder of the R installation tree.

Input Ports

R Input (Workspace)

Output Ports

R Output (Workspace)

Views

R Std Output

The text sent to standard out during the execution of R executable as well as the text of the .Rout file generated by R.

R Error Output

The text sent to standard error during the execution of R executable as well as the text of the .Rout file generated by R. (If it appears in gray, it's the output of a previously failing run which is preserved for your trouble shooting.)

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Best Friends (Outgoing)

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Workflows

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• m_​001_​missing_​values_​amelia (KNIME Hub) 
• MSstats_​statPostProcessing_​iPRG2015.knwf (OpenMS) 
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Installation

To use this node in KNIME, install KNIME Interactive R Statistics Integration from the following update site:

A zipped version of the software site can be downloaded here. Read our FAQs to get instructions about how to install nodes from a zipped update site.

Developers

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