c:geo supports Openstreetmap based offline vector map files using the mapsforge format.

Using an offline map with c:geo in combination with stored caches allows to use c:geo completely offline (e.g. when you don't want or cannot use a mobile data connection).

In addition to offline map files c:geo also supports related map themes. By using a custom map theme in combination with an offline map, you can customize the map view according to your needs (e.g. height lines, hiking trail marking, and much more). Some offline maps even require a matching theme to be installed to be displayed correctly.

This tutorial describes how to download, install and configure such offline maps and themes.

c:geo supports a fully automated download and installation of offline maps from various sources.

The c:geo map downloader can be started in two ways:

• From the map view by opening the map selector and tapping on <Download offline map>
• From the map settings by selecting Download offline map

After opening the map downloader you can choose from what source you would like to download the map by opening the drop down menu shown on top. To learn more about the different map sources, please take a look at this list or click on the heart icon shown on top right in the map downloader.

For this example we use “Mapsforge” as map source.

PICTURE

The top level list is usually sorted by coarse geographical regions (typically: continents) and get more specific on each lower level. Click on the magnifier icon to open the desired list/region and see its contents. If you finally found the map file you want to install, simply click on the disc icon next to it to start the download process.

Confirm the following dialog to start the download.

PICTURE

The download itself is performed in the background by the download manager of your device. When the transfer is complete, the file is copied to the c:geo map folder and set as current map automatically.

If the downloaded map requires a dedicated map theme (does not apply to Mapsforge) the downloader will additionally ask you, whether you also want to download and install this theme.

PICTURE

First of all you need to download a compatible offline map file covering the needed geographical area. There are several services available on the internet providing frequently updated and ready-to-use map files.

The following tables provides an overview of some compatible map file sources, where you can download your offline map:

The table above does only provide some examples of map providers, there are more of them out there.

If you correctly configured the directories, c:geo will now show all available offline map files in the map selection menu on your (live) map and in c:geo Menu → Settings → Map.

Once selected c:geo will continuously use this map file to render your map instead of using the online maps.

After selecting the offline map file to be used, you can assign the theme, which shall be used to render the map.

This can be done in the menu of the (live) map using the menu option Select map theme. If you installed a theme alongside with your offline map, please make sure you select the corresponding theme here.

If you installed a theme, you can adjust and configure the visibility of certain map elements according to your need. You can find the related option in the (live) map menu under Theme Options.

Here you can select a basic map style (e.g. Hiking, Cycling, Car) and customize it afterwards by enabling/disabling additional elements of the map.

Link to some guides and tutorials made by c:geo users