A scatter plot shows two numbers per point. A bubble chart shows three.
Each bubble has an X position, a Y position, and a radius — useful for anything with three numbers worth comparing at once, like price, rating and sales volume.
For every Dynamic Device setting in one place, see the Advanced Charts block guide.
Before You Start
- Edition: Pro — the Advanced Charts block needs Nexter Blocks Pro.
- Block to enable: Advanced Chart, switched on under Nexter > Blocks in your WordPress dashboard.
- Every value is typed, separated by a pipe (
|). Labels, one row of series data, colours — all of it is a single line of text with|between the parts, not a spreadsheet-style grid.
Steps
- Add the Advanced Charts block and choose a chart Style.
- Type your axis labels into Label Values, separated by
|.
- Set Style to Bubble.
- Open Datasets, add a row, and type your points into Data as bracketed groups:
[x|y|r][x|y|r].
- Add more rows to plot a second group of bubbles in a different colour.
Each bubble is its own bracket. Measured with
[10|20|8][15|10|12]: two bubbles, at (10, 20) and (15, 10), with radii 8 and 12 — exactly as typed.
How It Behaves
- Label Values names the rows, not the bubbles — bubble positions come entirely from the x/y numbers inside each bracket, not from the label list.
- Radius is in the same units as the axes, so very different X/Y ranges can make bubbles look oddly large or small — scale your radius numbers to suit your data.
- Grid Lines, Legends and Tooltip all work the same way as on Line or Bar.
- One Datasets row is one colour of bubble; add a second row for a second group to compare.
Limitations
- Every point needs all three numbers — there is no way to plot X/Y without a radius.
- Brackets must be well-formed; a missing
]or a bracket without exactly three pipe-separated numbers is silently dropped rather than shown as an error. - Data is typed, not linked to a spreadsheet or external source.
Troubleshooting
Some of my bubbles are missing
Check every bracket has exactly three pipe-separated numbers — [x|y|r]. A bracket with more or fewer values is skipped without a warning.
My bubbles are all the same size
Check the third number in each bracket (the radius) actually varies — if every point uses the same r value, every bubble will be the same size.
The bubbles are too big or too small for the chart
Radius is plotted in the same scale as the axes. Adjust your r values down or up until they sit comfortably against your X/Y range.
