R View (Remote)
DeprecatedKNIME R-Project - obsolete nodes registration version 4.2.0.v202003261539 by KNIME AG, Zurich, Switzerland
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.
R installation:
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:
http://www.r-project.org/
Short-refcard.pdf
Options
R Command
- R Snippet
- Examples of R code for the creation of plots can be generated by selecting a certain item (plot) of the drop down box. Furthermore, the R code within the command editor can be modified to create user specific views.
- 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 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).
- View type
- Choose a R view from the list of predefined view command and adapt the parameter list in the R command panel. Generic X-Y Plotting, Box Plots, Bar Plots, Cleveland Dot Plots, Association Plots, Conditional Density Plots, Display Contours, Conditioning Plots, Draw Function Plots, Fourfold Plots, Histograms, Plot Columns of Matrices, Mosaic Plots, Scatterplot Matrices, Perspective Plots, Pie Charts, Polygon Drawing, Spine Plots and Spinograms, Star (Spider/Radar) Plots and Segment Diagrams, Sunflower Scatter Plot, 1-D Scatter Plots.
PNG Settings
- Image width
- The width of the image to create and display in pixels
- Image height
- The height of the image to create and display in pixels
- Resolution (dpi)
- The nominal resolution in dpi which will be recorded in the bitmap file, if a positive integer. Also used for units other than the default. If not specified, taken as 72 dpi to set the size of text and line widths.
- Point size
- The point size of plotted text. One point is approximately one pixel.
- Background color
- The background color encoded in RGB Hex.
Login
- Host
- The IP of the computer where the R server is running, for example localhost with IP 127.0.0.1
- Port
- The port id, default is 6311.
- User
- The login name can be empty.
- Password
- The password can be empty.
Input Ports
Output Ports
Views
- R View
- View displays the png generated by the R command entered within the dialog.
Installation
To use this node in KNIME, install KNIME R Statistics Integration - Obsolete Nodes 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
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.