Saturday, March 7, 2015

Geo Chart Type

The “geo” chart type will render a map of the Earth. Each value will be a country, region, or city with a number associated with it. Countries with larger numbers will be a darker shade. The scale for the values is shown in the bottom right corner. The example below shows the location of customers by country in the Northwind sample app.

To use “geo” chart type, add the keyword “geo” to any “pivot-” tag, and make sure that it is separated with hyphens (-).

Data Field Tag
Country pivot1-row1-geo

Geo chart showing customers in each country.

The data for the chart can be seen below.

Data for the geo chart of customers in each country.

Hovering over a data point will reveal the data. An arrow will be rendered on the scale in the bottom right corner.

Hovering over a country or region will reveal the value.

The label for each row is attempted to be resolved by Google Maps. Please see the Google Maps Terms of Service for more information on their data policy.

Display Mode

The “displaymode” property determines the rendering of data points on the chart. By default, the mode is determined automatically. When using countries, such as in the example above, it will render using “regions”. One alternative mode is to place markers that are relative to the size of the value by specifying “markers”.

To define the display mode, add the keyword “displaymode”, followed by a colon and the value in quotation marks. This keyword must be the last in the tag.

Data Field Tag
Country pivot1-row1-geo pivot1-displaymode:"markers"

The geo chart also supports displaying values as marker.

Hovering over densely packed data points will magnify the region.

Hovering over dense data points will magnify the area.

Using a display mode of “text” will render the value as a string over the correct location. The size and boldness of the text reflects the size of the value.

The 'text' display mode will render data points as text.

Region

The “region” property allows setting the zoom level of the map. By default, the property is set to “world”, to display the full map. The value can be set to a continent using its 3-digit code, a country with the ISO 3166-1 alpha-2 code, or a state in the United States with the ISO 3166-2:US code. If using a state, the resolution property must be set to “provinces” or “metros”.

The example below is set to zoom into the continent of Europe with code “150”.

Data Field Tag
Country pivot1-row1-geo pivot1-region:"150"

The geo chart is set to only render the region of Europe.

Resolution

The “resolution” property determines the display of data points on the geo chart. By default, it is set to “countries”. The “provinces” value is supported for some country regions and US state regions. The “metros” value is supported for US country region and US state regions only.

Data Field Tag
Region pivot1-row1-geo pivot1-region:"US" pivot1-resolution:"provinces"

The geo chart shows a map of the US and has resolution of 'provinces'.

An example of the “metros” resolution mode can be seen below. The chart uses “markers” display mode.

Data Field Tag
City pivot1-row1-geo pivot1-region:"US" pivot1-displaymode:"markers' pivot1-resolution:"metros"

The geo chart shows a resolution of 'metros' in the United States.

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