How can I Fetch specific property data from QueryPropertyHistory and show in a line chart graph.

[Pratik_Aswale]

Hello,

I want to fetch a specific property data from QueryPropertyHistory service.

consider like I have a thing and have a humidity and Temperature property. So I want to only fetch Temperature property data from QueryPropertyHistory. How can we do that?

Thanks.

[Velkumar]

Hi @Pratik_Aswale 

You can use QueryNamedPropertyHistory service to get specific property value from Value Stream

/VR

[Pratik_Aswale]

Hi @Velkumar 

Thanks for the response...

 yes its works.

But In my use case I have 3 different Things which has some property data I log and store in valuestream .Now In mashup I have dropdown widget and line chart widget.

How can we get data after selection from dropdown 1 thing and data will shown in linechart of that 1 thing?

[Velkumar]

Hi @Pratik_Aswale

Pass Thing Name from Drop down to service dynamically. It should work.

Pass thing name from drop down 

/VR

[Pratik_Aswale]

Hi @Velkumar 

Which service to pass dropdown widget so that I can get thingname and also which selected Entity should I enter in below so that I can get QueryPropertyHistory service data and bind All data to line chart?

[Velkumar · Accepted solution]

Hi @Pratik_Aswale 

In Select Entity you can select your Thing Name

Select Service QueryNamedPropertyHistory service in service category

After that, pass your thing name to EntityName

/VR