The E-Plot (Beta) node provides scatterplots, line charts, and bar charts to illustrate the
relationship between numeric fields. The new graphing interface introduced in this beta node
includes many new and improved capabilities.
Figure 1. E-Plot (Beta) scatterplot graph
On the Graph tab, the upper left corner provides a toolbar for zooming in on a specific section
of the chart, zooming back out, returning to the initial full view, or saving the chart for external
use:Figure 2. Toolbar
At the bottom of the window, you can use the slider to zoom in on a specific section of the
chart. Move the small rectangular controls on the right and the left to zoom. To use this slider,
you must first turn it on in the Toolbox options area.Figure 3. Zoom slider
The left side of the window provides controls for changing the range of values shown. To use
these controls, you must first specify options in the Data Map options area. In the example below, a
field named PM25 is selected for the color map, a field named PM10
is selected for the size map, and a field called City is selected for the shape
map. You can hover over the vertical color bars to highlight the corresponding areas of the graph,
or slide the upper and lower triangles.Figure 4. Range controls
On the right side of the window, a set of expandable options is available that you can use to
interact with the data and change the chart's appearance in real time:Figure 5. Expandable options
Basic options
Figure 6. Basic options
Select the dark or light theme, specify a title and a subtitle, select a chart type
(scatter, line, or bar), and select the series shown on the Y axis. If you select
Line chart, only the fields on the Y axis will be displayed and only the
fields on the Y axis will be available in the Data Map options for color map and size map. If you
select Bar chart, only color map options will be available in the Data Map
options. For the series, all Interested fields you selected on the Plot tab
of the E-Plot node will be available here.
Data Map options
Figure 7. Data map options
Select a continuous field or a categorical field for the Color Map.
If a continuous field is selected, colors from green to red will be shown. The lower the value is,
the closer to red its color will be – and the higher the value is, the closer to green its color
will be. If a categorical field is selected, the field color will be displayed according to the
defined color palette. Size Map only supports continuous fields.
The lower the value is on the chart, the smaller its plot size will be. Shape
Map only supports categorical fields. The shape displayed on the map is defined by a
categorical field that splits the visualizaton into elements of different shapes – one for each
category.
Palette options
Figure 8. Palette options
Use the Palette if you want to customize the colors used for the title and the series.
Select the title or the series from the drop-down, click Edit Predefined
Colors, and then click More to select a color. Or you can use the
RGB or Hex fields to specify an exact color.
Toolbox options
Figure 9. Toolbox options
Use the Toolbox options to turn on or off the zoom slider, set gridline properties, and
turn on or off mouse tracking. Mouse tracking shows your exact coordinate position when hovering
over the chart.
