Show a measure as markers at the centres of regions on a GeoJSON boundary map, for example sales by province as markers sized by value. It needs no online map service. To colour the regions themselves, use Filled map; to place points by coordinates or addresses on an online basemap, use GIS marker map or Mapbox/Amap.

Bind regions and choose the map

1. Add Components → Charts → Maps → Marker map (480 × 360 px) and select an Analysis model.
2. Bind Geographic field (region names or codes) and Measure.
3. Choose the Map in Data. The initial selection is World; the list contains the maps maintained in GeoJSON Map. Changing the map resets the saved centre and zoom.
4. Add Tooltips, Time axis and Filters as needed.
5. Format it in Style (below), then test a few known regions.

On the United States map, the markers sit at the state centres and are sized by store sales:

The marker of a region is placed at the region's centre point, which is set in the GeoJSON Map tool.

Matching regions

Region values are matched exactly as for the Filled map: first the region name, then the administrative code, then the aliases (details).

• One marker per region: rows whose values resolve to the same region, such as 广东, 粤 and 广东省, are merged into one marker. Their values are summed and the tooltip lists all spellings. An average or a ratio is summed too, so keep one spelling per region when the measure is not additive.
• Unmatched regions: in edit mode a yellow box at the top left reads {count} of {total} regions do not match the current map; hover it for the names (up to 30). It is not shown in view mode. A value that matches a different region, such as the US state "Georgia" on the World map, is not reported, so choose the map that fits the data.
• No data: when the query returns no rows, the grey map stays and the empty-data message is drawn over it. The map can still be zoomed and panned.

Style

Group	Option	Effect	Default
Data colors	Ripple color	Marker colour.	—
Data labels		Labels on the markers.	—
Marker settings	Marker image(SVG)	Uses the path of an SVG file as the marker shape. Hides Enable animation.	Default marker
	Enable animation	Ripple effect around the markers.	Off
	Size type	Linear, Square or Logarithmic scaling by the measure.	Linear
	Size	Overall marker size, 2–90 %.	10 %
Region	Show region name	Draws region names.	Off
	Font	Font of the region names.	—
	Region color	Fill colour of the regions.	—
	Border	Region border.	—
Pan and roam	Pan and roam	Hide, Zoom, Pan or Zoom and pan for readers.	Zoom and pan
Tooltip	Show Tooltip	Data tooltip on hover (Tooltips).	On

Markers are at least 6 px wide, so zero and very small values stay visible and can be hovered; larger values still scale. Negative values are drawn at the minimum size.

Working with the map

• Mouse wheel in the editor: when Pan and roam includes zooming, the wheel scrolls the report page; hold Ctrl (⌘ on Mac) and scroll, or pinch on a touchpad, to zoom the map. In view mode and in the enlarged view the wheel zooms the map.
• Chart switch: Marker map and Filled map are listed first for each other; the fields and the selected map carry over.
• Aspect ratio: maps added in this version keep the shape of the GeoJSON map inside the component instead of being stretched.
• China map: the South China Sea islands are drawn in a framed inset at the bottom right. See the Filled map page, including the note on saved views in reports from earlier versions.

Opening reports made before 10.00

• Rows with several spellings of one region used to produce stacked markers with partial values; they now give one marker with the summed value.
• Unmatched rows used to be dropped without notice; they are now listed in edit mode.