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.

Color Manager

Colors can be assigned for either nominal (possible values have to be available) or numeric columns (with lower and upper bounds). If these bounds are not available, a '?' is provided as a minimum and maximum value. The values are then computed during execute. If a column attribute is selected, the color can be changed with the color chooser.

Dialog Options

Column(s):
Select the column whose possible values or ranges should be used for color selection.
Nominal:
Assigns colors based on the possible attribute values of the selected column. The colors are set independently for each attribute value.
Range:
Assigns a color gradient based on a numeric attribute. If the range is known, the minimum and maximum are displayed in the list, otherwise a '?' is shown. The color is determined by the position of the attribute's value within the numeric range: the corresponding color is set at the same position in the gradient.
Alpha:
Adjust the color's alpha component in the range of 0..255. Please note, alpha composition is expensive in cases when operations performed are not hardware-accelerated.

Ports

Input Ports
0 Table to which color should be applied
Output Ports
0 Same table with color information appended to one attribute
1 Color settings applied to the input table
This node is contained in KNIME Base Nodes provided by KNIME GmbH, Konstanz, Germany.