R Source (Table)

A node for reading diverse data sources from R into a KNIME table. Use this when there are R functions that you want to use to read an exotic file into KNIME. The R library "foreign" provides some examples of such functionality.

More details about R:

http://www.r-project.org/
Short-refcard.pdf

library(foreign)

Options

R Snippet

R Script

The code being executed in R. The output to be picked up by KNIME must be a data frame named knime.out.

Flow Variable List

The list contains the flow variables that are currently available at the node input. Double clicking any of the entries will insert the respective identifier at the current cursor position (replacing the selection, if any).

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

NaNs

Convert NaN and +/-Infinity output to missing cells. Enable this for backwards compatibility with the behavior before version 2.10.

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. You can either specify the path directly or use the R installation in a conda environment. The conda environment can be specified using a conda environment flow variable from e.g. a “Conda Environment Propagation” node.

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.)

Workflows

• 01_Example_of_R_SnippetKNIME Hub
• 01_Example_of_R_SnippetKNIME Hub
• 01_Example_of_R_Snippet v1KNIME Forum
• 01_Model_Selection_SampledKNIME Hub
• 01_R SnippetノードKNIME Hub
• Show all 138 workflows

Links

• reader and writer Rby JanDuo on 2020-07-28

  forum.knime.com/p/98257

Developers