Situm supports 4 cartography formats: raster images, raster tiles, GeoJSON and IMDF.
Raster images #
Raster images conform the basic cartography supported by Situm. In Situm Dashboard, all floors of the building must have at least one floorplan defined as a raster image. All of them must have exactly the same dimensions (height & width in pixels).
Please take into account:
- We admit PNG, JPEG and JPG images.
- Max resolution is 4096×4096 px.
Please take a look at the Floorplan Section for more information on raster images use and restrictions.
Raster tiles #
If your venue is big, 4096×4096 px might not be enough. One convenient alternative is to use the raster tiles format.
Raster tiles are high-resolution images where, at each zoom level, the image is divided on a set of squared areas or tiles. All tiles have the same resolution (independently of the zoom level), which guarantees a constant real-size / image-resolution ratio on each tile.
You may generate raster tiles by following this tutorial.
GeoJSON #
If you need more resolution, you may try vector maps. In this regard, GeoJSON is a standard open-source format designed to represent geographic information. It supports different types of geometries to present spaces, for example:
- Dots are used to represent points of interest inside a building, such as a cash machine.
- Line chains to represent corridors.
- Polygons to represent rooms.
- … and a long etcetera.
Representing information as geometries instead of as individual pixels has a number of advantages: higher resolution, lighter data weight, etc.
You may create your GeoJSON following this tutorial and upload it to Situm Dashboard as explained here.
IMDF #
Along the same lines, the IMDF (Indoor Mapping Data Format) has been developed in recent years. This specification created by Apple (based on GeoJSON) offers a compact, human-readable, and highly extensible data model for any indoor space allowing the definition of a wide variety of categories of indoor elements, and their characteristics, and attributes.
IMDF offers great benefits over GeoJSON. Mainly, a better support for 3D visualization, look & feel customization, and categorization of indoor elements with semantic labels and properties.
You may create your IMDF following this tutorial and upload it to Situm Dashboard as explained here.