Use a plot graph when you want to show the relationship between two or more variables. Two variables are plotted on the horizontal and vertical axes of the graph, while a third variable can be added and is represented by the size of the bubble.
To select plot graph in the visualization menu, you need at least two numeric columns.
In this article
1. Plot Graphs
A plot graph is helpful to display the relationship between two attributes, for example, two product attributes. You can plot attributes such as sweetness and texture and include the third variable of price. In such a graph, there would be a bubble to represent each brand. The score of each brand on sweetness and texture determines the bubble position in the chart. The price of each brand determines the size of the bubbles.
In the example below, Lifestage is added to the down drop zone, and three measures are selected across. Harmoni plots the first measure, Airfare Cost, in the horizontal axis (x-axis) and the second measure in the vertical axis (y-axis), displaying the results for each Lifestage group. The third measure, Total Spend, controls the size of each bubble.
- Drag an axis to the down drop zone
- Add measures to across to explore attribute relationships
- Click Visualize, then select Plot Graph
2. X-axis, Y-axis, and Bubble Size
In an analysis with three dimensions across, Harmoni plots the graph as follows:
- The first column in the table (excluding the total) is represented by the x-axis
- The second column is the y-axis
- The third column is the size of the bubbles, which is shown in the interactive title. Each bubble on the graph represents a row.
- Items in the Down zone display as the chart legend
- X, Y, and bubble size represent different elements from the Across zone
- The first two attributes plot as X and Y
- The third sets bubble size, shown in the interactive title
If you select two measures as you create the table, then visualize using the plot graph, you can add the bubble size to the plot graph later by dragging the third measure to the Bubble Size zone.
Important: Low sample size does not currently work with plot graphs.
Tooltip
With data labels turned on in the chart (the default setting), and a measure included in the bubble size drop zone, the value displays in the bubble on the chart. Users can change this by accessing the Modify menu and clicking the show/hide all data labels option to turn off the labels. With the icon greyed out, the values are removed and hovering over the bubble displays a tooltip with the information about the data point.
- Bubble size reflects the third column's data value
- In the modify menu, you can toggle data labels on or off
- Orange icon means labels are shown on bubbles
- Click to hide labels; icon turns gray
- Hover to see values in a tooltip
Where to from here?
Learn more about Visualize.