Dear Rafael,
CrateDB does not support 3D coordinates (if you are talking about
geo-coordinates),
you need to use TimescaleDB + PostGIS.
As regards the plugin in Grafana, you can safely use the postgresql plugin.
Though, I am not sure there is an panel in grafana that supports 3D
visualization.

Cheers,

Hello Sir/Madam,
> My name is Rafael and I am sending this email because I am stucked on my
> FIWARE project and I wonder if you could give me some recommendations.
> The goal of my project is to plot the x,y,z coordinates (attrs from an
> entity) in a 3D graph which updates as they change (for monitoring the
> values, as a trajectory in 3D space).
> It's not important how the value of x,y,z changes, it can be for example
> by hand through the prompt, using curl.
> At first, I thought about using Cygnus, CrateDB and Grafana, but when I
> have deployed all I have realised that Grafana doesn't support the crate
> plugin anymore (
> https://community.grafana.com/t/plugin-cratedb-not-available/17165), and
> I got errors (I have tried it using PostgreSQL as it is explained here:
> https://crate.io/a/pair-cratedb-with-grafana-6-x/)
> At this point, I would like to ask: do you think I need to work with
> time-series data? If not, how should I address the problem? If yes, can I
> use another database manager with Cygnus and supported by Grafana that
> works with this time-series format?
> Thank you very much for your answer. Best regards,
> Rafael

Dr. FEDERICO MICHELE FACCA
CTO, Head of Martel Lab
+41 788075838
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