Search Results

Creating a map chart

A map chart positions your data in a geographical context, using different layers. The layers can be either data layers, such as marker layers or feature layers, or reference layers, such as map layers or Web Map Service layers (WMS). By adding different layers to the map chart, you can configure the map to suit your needs.

Prerequisites

The data you use to create a map chart must have geographical context, such as columns with latitude and longitude values, or names of countries and cities.

You can add more than one layer of each layer type and control the properties for each layer separately. Zoom and pan using the navigation controls in the visualization to explore the data in the map chart.

  • Each layer contains its own set of properties to add fine control for the specific type of layer.
  • Transparency, a property in each layer, gives you fine control over the layer display.
  • The marker layers can add indicators for a data column, such as locale or zip codes, major cities, or country names.
  • The feature layers can add shapes defining areas such as regions, countries, or continents.
  • Third-party services (TMS and WMS) can be used to add specific field interest or beauty to the map charts.

Procedure

  • On the toolbar, click Add new visualization, and then select Map Chart.
    A default map chart, which reads data from the available geographical columns, is created.

Map chart example

This example shows a map chart created from the existing GeoAnalytics public data, available in the library. The data table, already loaded, shows Australia States and Territories. When the map chart is created from this data table, it uses the categorical values in Continent, Country, and Subregion to display the map chart, and then it automatically adds the map layer and a feature layer to render the filled-in shapes using the other data columns (Geometry, State, and so on). This image shows the default properties settings for this built-in data before any customizations are added.


The map chart created from GeoAnalytics data provided in Spotfire

What to do next

Configure the map chart properties, and then add and configure any number and variety of layers to the map chart.