Radar Plot (Plotly)

A radar plot based on the Plotly.js library. This radar plot displays each row in a data set as an individual line on a circular plot with each radii corresponding to an individual feature of that row. This plot only displayed numeric columns and is NOT currently compatible with other KNIME interactive views. It is also recommended that you choose to display 20 or fewer rows. This chart can be useful for visualizing relationships between groups within data, but it is recommended to consolidate your statistics before using this view, rather than displaying an entire data set. A recommended node to use in conjunction with this view would be the 'Statistics' node to provide useful numeric information about the data set and then the radar plot to visually inspect these relationships.

The node supports custom CSS styling. You can simply put CSS rules into a single string and set it as a flow variable 'customCSS' in the node configuration dialog. Current KNIME classes are NOT YET supported, so class names will have to be deduced from the view itself. We are hoping to support standard KNIME classes in an upcoming release.

Please note: the Plotly.js KNIME extension is currently in Labs. It is recommended that you handle missing values and normalize your data before using visualization nodes in this extension to improve performance. Please feel free to leave feedback and suggestions on our community forum here .


General options for the KNIME Radar Plot with Plotly.

Maximum number of rows
Maximum number of rows displayed. Calculated from top towards the bottom of the input table.
Included columns
Select the columns to be plotted as spokes on the radar plot.
'Group-By' Column (*)
If "Display Legend" is enabled, this column will be used to group different visual elements based on their membership in the chosen "Group-By" column in the legend. With the legend enabled and groups chosen, you can then toggle the visibility of visual elements by group through legend interactions.
Report on missing values
When enabled this will display a warning whenever there is a missing value present in the data and give a count on how many missing values exist in the data.
Missing values handling
The way in which this view tries to compensate for missing or invalid values. "Skip rows with missing values" will omit the entire row if a single cell is missing. This can affect multiple traces on the chart in some circumstances. "Leave missing" will leave a gap where the missing value exists and draw the chart anyways.

General Plot Options

These options control the initial state of the view.

Title (*)
The chart title.
Axis label (*)
The label for the radial axis. If "Enable text editing" is enabled, this value can be changed in the view.
Settings for SVG image generation.
Display legend
When checked, the chart's legend is displayed.
Show warnings in view
When checked, the any warnings will be displayed in the view.
Override colors
When checked, the colors provided by the data table will be ignored and the color chosen below for "Data color" will be applied to the plot. If there are no colors provided with the data, the node will use the "Data color" by default, even if this option has not been selected.
Data color
The color of the data on the plot if there are no colors provided with the table (i.e. from the "Color Manager" node) or if "Override colors" has been chosen. This color will not be automatically applied if the data has "Default" colors, it will only be automatically applied if in the absence of ANY colors. You can always apply this color to the data by selecting the "Override colors" option.
Background color
The background color of the plot, including the axes labels, the title and the subtitle.
Data area color
The background color of the data area, within the axes.
Grid color
The background color of the grid and axis base lines.
Use WebGL graphic library
Enabling this option uses WebGL (instead of traditional SVG rendering) in the compatible browsers to improve performance. It is recommended that you leave this option enabled. However, enabling this option will disable any custom CSS provided to the node. If your browser does not support WebGL, the view will use traditional SVG rendering as a fallback. NOTE: If "Generate image" is enabled, this process will use SVG while creating the image, but WebGL for the interactive view. In this case, CSS Styles may be applied to the image, but not the Interactive View.

Control Options

Use these options to configure the available controls within the view.

Enable view controls
Check to enable controls in the chart.
Show fullscreen button
When checked, a fullscreen option is displayed in the KNIME interactive menu.
Enable tooltip toggle
Check to enable toggling of the tooltip within the view.
Enable feature selection controls
Check to enable column editing in the view.
Enable text editing
Check to enable the editing of the title and axis labels within the view.
Enable 'Show only selected' toggle
Check to enable toggling of selection-only within view.
Enable publish selection toggle
Check to enable toggling of selection publishing within view.
Enable subscribe to selection toggle
Check to enable toggling of selection subscription within view.
Enable subscribe to filter toggle
Check to enable toggling of filter subscription within view.
Enable link to Plotly editor
Check to enable toggling of filter subscription within view.


This KNIME implementation of Plotly is compatible with the other interactive JavaScript views in the KNIME analytics platform. Use these options to control the degree to which this chart interacts with other views.

Enable selection
If checked selection controls will be available for this view. This does not disable the view from subscribing to selection events which are published by other views in a combination or composite view.
Display clear selection button
Displays a button to clear current selection if selection is enabled, you are subscribed to selection or "Enable subscribe to selection toggle" is enabled in the Control Options.
Publish selection events
If checked, notifies other interactive views when user changes the selection in the current view. See also "Subscribe to selection events".
Subscribe to selection events
If checked, the view reacts on notifications from other interactive views that the selection has been changed. See also "Publish selection events".
Subscribe to filter events
If checked, the view reacts on notifications from other interactive views that a filter has been created or modified.

Input Ports

Data table to display in an interactive Radar Plot.

Output Ports

SVG image of the Radar chart if that option has been enabled.
Data table containing the input data with an appended boolean column representing which rows were selected in the view.


Interactive View: Radar Plot
The KNIME Radar Plot with Plotly.




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