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 Chart (JFreeChart)
Displays a histogram chart, which is also called a stacked bar chart.
It stacks the bars that represent the number of occurrences of values for selected
columns in the individual bins. For general settings of the generated
image, see the "General Plot Options" Tab.
Dialog Options
Histogram Chart Options
- Columns
- Selects the columns to be used in the histogram.
The values of each column are used for one histogram. They are all plotted above eachother.
- Color
- Specifies the color used for the first column
- Label for X axis
- If activated the X-axis is named accordingly
- Label for Y axis
- If activated the Y-axis is named accordingly
- Number of bins
- Specifies the number of bins
- Show legend
- Switches the legend on/off
General Plot Options
- Type of Image
- The type of the created image can either be png or svg. PNGs are mostly smaller, SVGs provide details about plot and the possibility to be changed individually.
- Title of Graph
- The title of the graph shown above the generated image. If the title is not activated, no title will be shown.
- Width of Image (in pixel)
- The width of the generated image, not the plot width.
- Height of Image (in pixel)
- The height of the generated image, not the plot height.
- Background Color
- The color of the background of the image. Hence this color is used for the area behind and around the plot as well as behind potential axis and legends.
- Plot Background Color
- The color of the background of the plot. Hence this color is used for the empty space in a plot.
- Plot Background Alpha
- The transparency of the plot background can be modified using an additional alpha value. An alpha value of 1 does not change the background transparency. Decreasing the alpha value will increase the plot background transparency.
- Scale Font Size
- Factor changes the font sizes within the JFreeChart view. A value greater the 1 increases all view fonts, a value between 0 and 1 decrease them.
Ports
Input Ports
0 |
Data table containing the data for the histogram |
Output Ports
0 |
The image of the plot (SVG or PNG) |
Views
- Histogram Chart
-
Displays the histogram chart of the input data.
This node is contained in KNIME JFreeChart nodes
provided by KNIME GmbH, Konstanz, Germany.