LoRaServer + CayenneLPP + InfluxDB + Grafana + Worldmap panel = Not showing dots on map

Hello,

I am trying to show locations on Grafana’s WorldMap panel.

First, some context:
Location acmes from embedded devices with GPS (Pycom FiPy + PyTrack). Location is encoded using CayenneLPP codec. Message is transmitted through LoRaWAN by LoRaSERVER, which decode payload and insert into InfluxDB (including Geohash). Grafana has an InfluxDB where data came from.

Consideration:
Here is how LoRaSERVER saves the data into Influx

> show tag keys from device_frmpayload_data_gps_location_20_location

name: device_frmpayload_data_gps_location_20_location

tagKey

------

application_name

dev_eui

device_name

f_port

tag-id

> show field keys from device_frmpayload_data_gps_location_20_location

name: device_frmpayload_data_gps_location_20_location

fieldKey fieldType

-------- ---------

geohash string

latitude float

longitude float

Problem: Nothing is shown on the map.
I have tried with Geohash and coordinates in WorldMap panel’s configuration with no success.

I have learned from other sites that WorldMap panel expects Geohash as Tag field. For some reason, LoRaServer is saving Geohash as Field Key.
I wonder if there is a way to config LoRaServer to save Geohash as Tag key

Any help is more than appreciated.

With best regards

Sebastian