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.
Histogram
Displays a histogram view with different viewing options.
The user can change the following view properties on the fly:
- Aggregation method (count, summary, average)
- Bar size
- Show empty intervals
- Show missing value bar
- Layout
- Zooming
- ...
The bars are colored in proportion to the aggregation value.
Hiliting is not supported.
All automatically created bins, except the first one, are
left open intervals (a,b] where a is excluded and b is included in
the interval. To cover all values the first interval is a closed
interval [a,b] where a and b are included. In order to provide nicer bin
intervals the left border is set to 0 if possible.
This view is particularly well suited for extremely large datasets.
For more interaction and hiliting support use the
"Interactive Histogram" node.
Only columns with a valid domain are available in this view.
To set the domain use the DomainCalculator or ColumnFilter node!
Dialog Options
- Display all rows
-
If selected the histogram view displays all rows of the incoming data.
- No. of rows to display
-
Defines the number of rows to be displayed in the histogram.
This option is disabled if the 'Display all rows' option is selected.
- Binning column
-
This is the column to be shown on the x axis of the histogram view.
For numerical values the number of bars can be adjusted later
in the 'Bar settings' section of view properties.
- Aggregation column
-
This is the column to be used as the bar value and displayed on the
y axis. Only numerical values with a valid domain are allowed.
The aggregation method can be adjusted later in the
'Aggregation setting' section of view properties .
- Number of bins
-
The number of bins to create for a numerical x axis column.
If the selected x column is nominal this value is ignored.
Ports
Input Ports
0 |
The data table to be displayed.
|
Views
- Histogram View
-
Displays the data in a histogram view.
This node is contained in KNIME Base Nodes
provided by KNIME GmbH, Konstanz, Germany.