Fixed length auto update real time chart ploting In QML.

vicky_mac

Hi,

I want to show sensor's live data coming after every second on a QML chart.

I want to maintain a fixed length 50 points history on graph. So first 50 points will be displayed as it is and then after that I want to remove first point and add the new data to last index.

Possible ways I explored :

Manual remove , shift the elements and then add last value at last index.

2.Remove first , add last and move x axis.

These both are working but 1st solution requires too much of work to get it done .

And in second scenario the xaxis is a real value so after a point I think it will create problem because my application may run for weeks . I don't know xaxis shifting will be ok or not.

Is there any way we can achieve it efficiently. I know many medical devices developed using QML. Heart rate monitors and other other applications have similar use cases of data plotting.

Thank you.