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.

Pie chart (interactive)

Displays an interactive pie chart with different viewing options. The interactive pie chart supports hiliting and the changing of the pie and aggregation column on the fly.

If the pie chart appears in gray no color information is set for the selected pie column. Use the 'Color Manager' node in order to set the color appropriate.

The user can change the following view properties on the fly:

  1. Pie column
  2. Aggregation column
  3. Aggregation method (count, summary, average)
  4. Pie size
  5. Show missing value section
  6. Show pie section outline
  7. Draw selected section exploded
  8. Show details for selected sections
  9. Set value scale to percentage or original
  10. Pie size
  11. Explode size
Each pie column value get its own colored section. Hiliting is supported.

Color selected sections: If the color selected sections option is selected the pie displays also sub sections for the selected sections. A sub section represents the rows color using the color manager. This option is only available if row colors are set.

Please note: This node caches all data in the main memory to provide interactive functions. If you plan to visualize extremely large datasets the non interactive "Pie chart" node may be better suited.

The pie chart supports maximum 360 sections!

Dialog Options

Display all rows
If selected the pie chart displays all rows of the incoming data.
No. of rows to display:
Defines the number of rows to be displayed in the pie chart. This option is disabled if the 'Display all rows' option is selected.
Pie column:
The values of this column are represent as colored section in the pie chart. Can be changed in the view later on.
Aggregation method:
The initial aggregation method to use. Can be changed in the view later on.
Aggregation column
The column to calculate the aggregation values from. Can be changed in the view later on.

Ports

Input Ports
0 The data table to be displayed.

Views

Pie Chart
Displays the data in an pie chart.
This node is contained in KNIME Base Nodes provided by KNIME GmbH, Konstanz, Germany.