You can add markers that represent other entries in your RAMADDA.
Entry Markers
The Entry Marker and the Multi Entry allow you to add markers for RAMADDA entries. Clicking on the marker will show some content from that entry. For example, RAMADDA supports 3D Models as an entry type. Choosing New->Entry Marker and adding it to the map will add a marker. Clicking on that marker will show a 3D view of the model:
images/entrymarker.png?version=750
When adding a marker for an entry that has geolocation you will be prompted if you want to use the entry's latitide/longitude as the position for the marker or if you want to position the marker manually. If you opt to use the entry's position then, if the position of the entry is changed, that change is reflected in the map. You can manually move the marker and that new position will then be used. Likewise, the name and label for the marker is taken from the entry name. If the name of the entry changes then that will be reflected in the map. This can be changed by bringing up the properties for the entry marker:
images/entrymarker2.png?version=750
Data Displays
RAMADDA provides very rich capabilities to show data in maps, e.g. on ramadda.org. These displays are accomplished through RAMADDA's wiki facility. You can import one or more map data displays into an IMDV.

First, upload your data to RAMADDA and create a map display for that data using RAMADDA's wiki facility. Next, from the IMDV New menu select Data and select the data you uploaded. The IMDV will extract from you data's wiki the arguments for a map display. These will be shown and can be edited if needed. Here we've selected some aircraft track data:
images/newdata.png?version=750
With the result map:
images/data1.png?version=750
The map display properties can be edited through the Edit form. Other data displays can be added and overlaid on the IMDV map.

You can play around with this by importing the file https://ramadda.org/repository/a/userguide_showing_data_in_maps to your RAMADDA. This is an export of the example showing Colorado aircraft crashes and Colorado mines on ramadda.org.