Enables the usage of R views generated on an R server. View displays the R View generated by the R command entered within the dialog. The entire data is transfered to the R server and the entered commands are executed. The resulting png file is passed into KNIME and is displayed in the node's view.
Missing values are supported, that is, missing values in numeric columns are transfered as NaN (Not a Number) to the R server while missing values in all other types of columns are sent as NA .
In order to get the R nodes running, you have to install the R-project first, see www.r-project.org . Also the R server which responds to R commands has to be installed and running, see http://www.rforge.net/Rserve/ .
Also make sure that you have the latest available or compatible R-project version at hand. For Windows you may download an R server for your R-project version. All other operating systems require the most recent clients (R-project installation). We offer downloads of current versions of R and Rserve that are compatible with KNIME on our website. Please note that in the current version the R server needs to be restarted from time to time. If an R node hangs, interrupt the R server and restart it. Warnings and errors are printed in the R server window.
More details about R: