Select a Map
Some geographical maps of the world are provided with Alpana.
They are available under Map Settings, by selecting Built-in :
By default, the selected map shows the world’s countries.
You own custom GeoJSON files can be used instead.
Under Map Settings, select Custom :
Click the “…” to browse for a
*.json file on your machine.
Select a Geometry Type :
- Geographic : coordinates are longitude/latitude with a corresponding Mercator projection. This is useful for geographical data like country shapes. Not suitable for viewing very small values of latitude and longitude (eg: 0.0001 degree latitude or longitude)
- Normal : coordinates are X/Y with no projection. This is useful for representing a plan, like an equipment shape or a plant floor disposition.
When a map file is selected, the GeoJSON Properties key names are listed in the “Shape Identifier” combobox in Alpana Designer :
For example, the default map has Properties named “admin”, “name”, “continent”, …
And each Property has values like name=France, continent=Europe, …
The values in the selected Shape Identifier must match the values in your Data Source.
For this, you have basically 2 solutions :
- edit the GeoJSON file so that there is a Property that possesses values that match your data
- edit your Data Source so that the values match the values of a map Property