The following node is available in the Open Source KNIME predictive analytics and data mining platform version 2.7.1. Discover over 1000 other nodes, as well as enterprise functionality at http://knime.com.

Scatter Matrix

In a scatter matrix each matrix element Eij is a scatterplot of the columns i and j, where the values of the i-th column are displayed at the x axis and the values of the j-th column at the y axis while the coordinates are displayed alternating on all sides of the plot.

Only columns with a valid domain are available in this view. Make sure that the predecessor node is executed or set the domain with the DomainCalculator node!

HiLiting:

The data points may be selected by either dragging a rectangle with the mouse over the points or clicking directly on them. Hold control pressed for multiple selections. The selected datapoints may be hilited by either right-click to get the context menu or via the hilite menu in the menu bar. The data points are displayed as selected or hilited in all matrix elements.

Tooltip

Move the mouse over the data points to get information about the row ID and the value.

Properties:

Default Settings:

Column Selection: Choose the columns you want to have displayed in the scatter matrix. Initially only the first three are selected.

Appearance:

Dialog Options

Nr. of rows to display
Enter the maximum number of rows the plotter should display. Setting a higher value than the default value might dramatically decrease performance.
Ignore columns with more nominal values than:
Enter the maximum number of distinct nominal values that the view should consider. Columns with more values than the specified number will be ignored and can't be selected in the view. Please also note that nominal values must be present in the table specification of the input table (check it by inspecting the table spec tab of the predecessor's outport view). If no nominal values are present in the table, execute the predecessor or consider to use the "Domain Calculator" node and to enforce the determination of the nominal values.

Ports

Input Ports
0 Data to display

Views

Scatter Matrix
A scatter matrix displays scatter plots for each combination of columns.
This node is contained in KNIME Base Nodes provided by KNIME GmbH, Konstanz, Germany.