creating a line chart of heart rata data

[ANOOD]

is it possible to an external tool lile lightening chart js 

https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwjv-f6mt7DzAhXErZYKHSA8ANcYABAAGgJ0bA&ae=...

to create line charts of heart rate data versus time and displayed on the monitor screen  while qpp is running in the developer mode on the watch ?

thank you 

[Gondwana]

Do you mean real-time data (as opposed to synced)?

[ANOOD]

yes the real time data 

[Gondwana · Accepted solution]

Yes, it's possible, but difficult. The trick is to send data via companion to a server, via fetch or WebSocket. (WebSocket is probably better for real-time.) The server can run on the same device as the companion, which can simplify security issues. The server can draw the graph, or onforward it to some other app to do so.

[ANOOD]

ahaa i understand 

that makes sense 

thank you so much for the help

one more question 

can we similar create a watch app that has the same functionality and shows a line chart of heartrate vs time data ?

thank you 

[Gondwana]

Yes. That's easier because you don't need all the communications stuff. However, drawing graphs on the watch is tricky because you need to do it by manipulating an array of SVG elements (eg, lines).

In either case, your app will need to be running to collect real-time data.

[ANOOD]

thank you so much thats vry helpful