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 Plot
Creates a scatterplot of two selectable attributes. Then each datapoint is
displayed as a dot at its corresponding place, dependent on it's values
of the selected attributes. The dots are displayed in the color defined by
the Color Manager, the size defined by the Size Manager, and the shape
defined by the Shape Manager.
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
by clicking on points.
Hold control pressed for multiple selection.
The selected datapoints may be
hilited by either right-click to get the context menu or via the hilite
menu in the menu bar.
Tooltip
Move the mouse over the data points to get detailed information about
the data point (Row ID, and the x and y value).
Properties:
Default Settings:
- Mouse Mode: choose "Selection" to select the datapoints or
"Zooming" to zoom in. If you have zoomed in you may choose "Moving"
to navigate in the zoomed display.
- "Fit to screen" fits the display again to the available space.
- "Background color lets you choose the background color of the display.
- "Anti-aliasing": Check if the view should enable anti-aliasing
(make a smoother drawing). This will slow down performance as well.
Column Selection:
Choose the columns you want to have displayed as x and y coordinate.
With the "X attribute" and "Y attribute" spinners the range of the axes
can be adjusted. The left spinner changes the lower end, the right
spinner the upper end.
Appearance:
- "Dot Size" lets you define the size of the dots.
- "Jitter": if a nominal column is selected you may adjust how much
the values are jittered (scattered around there origin).
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 |
Datatable with data to display |
Views
- Scatter Plot
-
The scatterplot displaying the data.
This node is contained in KNIME Base Nodes
provided by KNIME GmbH, Konstanz, Germany.