[SOLVED] Issue with valuecolor on derived item using another item's values

Setup, Configuration and Use Items & Sitemaps
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1

Hello all,

I am having an issue with valuecolor when assigning to derived item - it does not work as described in the documentation and i wonder what i did wrong…

I have a NetAtmo unit that can measure both actual temperature (as a number) and also reports trend as a string. I also use a string item to combine those.

Number            Apt_LR_Temperature            "Temperature [%.1f °C]"               <temperature>          (Apt_Temperature,Apt_LivingRoom)                                        [""]   {channel="netatmo:NAMain:fe908471:70ee50369ad0:Temperature"}
String            Apt_LR_Temp_Trend             " [%s]"                               <temperature>          (Apt_LivingRoom)                                                        [""]   {channel="netatmo:NAMain:fe908471:70ee50369ad0:TempTrend"}
String            Apt_LR_Temp_with_Trend        "Temperature [%s]"                    <temperature>          (Apt_LivingRoom)

In the rules I have the following code to update the combined string item whenever there is an update like this:

rule "update Apt_LR_Temp_with_Trend"
when
    Item Apt_LR_Temperature received update
then
    Apt_LR_Temp_with_Trend.postUpdate(Apt_LR_Temperature.getState().format("%.1f °C") + " (" + Apt_LR_Temp_Trend.state + ")")
end

Overall this works fine except that I cannot format the color of the combined string item based on the original temperature item.

The basic temperature item coloring in the sitemap works fine like this:

Text item=Apt_LR_Temperature valuecolor=[Apt_LR_Temperature=="NULL"="lightgray",Apt_LR_Temperature>=30="red",>25="orange",>=20="green",>=15="orange",<15="blue"]

The same formatting for the combined string item does not - always uses default color…:

Text item=Apt_LR_Temp_with_Trend  valuecolor=[Apt_LR_Temperature=="NULL"="lightgray",Apt_LR_Temperature>=30="red",>25="orange",>=20="green",>=15="orange",<15="blue"]

The way i read the documentation the item_name in valuecolor does not need to be the item actually being displayed right?

I see no errors or warnings in the logs…

Can you please point me to my mistake :slight_smile:

Thanks in advance!

  • Platform information:
    • Hardware: synology NAS
    • OS: synology DSM
    • Java Runtime Environment: not sure… whatever the docker has
    • openHAB version: openhab 2.4.0 running in a docker container
2

Try that:

Text item=Apt_LR_Temp_with_Trend  valuecolor=[Apt_LR_Temperature=="NULL"="lightgray", Apt_LR_Temperature>=30="red", Apt_LR_Temperature>25="orange", Apt_LR_Temperature>=20="green", Apt_LR_Temperature>=15="orange", Apt_LR_Temperature<15="blue"]
1 Like
3

Thank you very much! This did it!

I guess this has to do with how java interprets this perhaps?

4

Nothing to do with java. It’s the sitemap parser. Because you are using another item you need to use the item in every condition.