Calculated items to get average temperature

[lukus]

I've created a template to access temperature sensors on my Mac OS X Servers, and am now able to track about a dozen temperature measurements.

This is kind of a lot of data when all I want to know is "how hot is the ambient air around the server" so I would like to make a calculated item that takes an average of 4 ambient temperature sensors. I've created a calculated item with this expression (broken on to multiple lines for clarity):

(
last("TemperatureChunnelAmbientLeft")+ 
last("TemperatureChunnelAmbientRight")+ 
last("TemperaturePSU1InletAmbient")+ 
last("TemperaturePSU2InletAmbient")
)/4

This works well on servers that have all 4 sensors. However, some servers only have a single power supply, so they're missing data for TemperaturePSU2InletAmbient.

Is there a way to structure this so that any missing items are just omitted from the average?

[Alexei]

No, it is not possible. Zabbix cannot calculate expression if data is missing for one of the items. Perhaps we should introduce a new function to deal with this situation.

[zabbix_zen]

Hi.

Was there any progress on this?
It's a little confining to trust all items are successfully received by Zabbix.
Is there something on the Roadmap so that items get this freely evaluated by the available functions?

[fmtaylor2]

Bump

Any progress on this yet?