4.5.1  Creating a Map Chart

To add a map chart to a Viewsheet, drag and drop the Chart component from the Component tree into the grid. Use the mouse to move and resize the chart as desired.

To bind the Chart to geographical data, follow the steps below:

1. Click on the center of the chart, or click the 'Edit' button in the top-right corner. This opens the Chart Editor on the left side of the Visual Composer.

 

2. In the Chart Editor's Data panel, click 'Select Chart Style', and choose the 'Map' chart type. Click the 'Apply' button (or double-click the 'Map' icon).

 

The the Data panel changes to display a 'Geographic' field.

If your columns con­tain longitude and lat­itude data (in decimal format) rather than location names, use the 'Longitude' and 'Latitude' fields of the 'Data' panel.

3. From the Data Source panel in the Chart Editor, drag a geographic dimension onto the 'Geographic' field in the Data panel. (See Setting a Geographical Field to declare a field as geographical.)

 

The chart updates to display the locations contained in the geo­graphic field.

4. Repeat the previous step to bind additional 'Geographic' levels. For example, you can bind 'City' and 'State' fields.

 

5. From the Data Source panel, drag a measure onto one of the fields in the Visual panel ('Color', 'Shape', 'Size', or 'Text').

 

This binding will display the measure on the chart using the partic­ular visual coding you selected, and automatically creates a corre­sponding legend. See Adding a Sub-Series for more information on using the Visual panel.

6. Click the 'Edit Measure' button, and select the desired aggregation method for the measure.

 

7. (Optional) For any geographical fields that you specified, click the 'Edit Dimension' button, and select the desired ranking for the geographical data. For example, you can display just the top three states according to the measure.

 

8. (Optional) To create a particular trajectory through the points on the chart, drag a path field to the 'P' region. The values of this field are used to assign the sort order for the plotted data so that connecting lines are drawn between points which are adjacent in the path sort order.

9. (Optional) Set the initial map view by selecting a region, and clicking the 'Zoom' button. See Zooming a Chart for more details.

 

See Also

Creating a Custom Map, in Administration Reference, to create a map based on a custom shapefile.

Setting a Geographical Field, for information on declaring a field geographical.

Editing Chart Formats, for information on changing chart labels.

Adding a Sub-Series, for information on using the Visual panel.

Creating Selection List from Chart Data Source, for information on adding a Selection List.

Creating a Selection Tree from Chart Data Source, for information on adding a Selection Tree.

Positioning a Component, for information on moving and resizing a chart.

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