I am in the middle of building weather station based on Raspberry Pi and couple of sensors.
I succesfully sent logs from RPi to logstash and logstash resend them to elasticsearch.
First of all I am configuring temperature and humidity. I send them to elasticsearch as float type:
Both are visible in Kibana as numeric filed
The thing is I would like to display temperature, humidity and other weather parameters as gauge:
First problem is: this avarage from temperature. Is it possible to display last temperature field from message? Not avarage from timeframe but last value from temperature field from latest message received?
Second problem: why I cannot set -25? Temperature can be below 0*C
Could you help me with solving my problems?
Appreciate your help!