nG2 Chart data from Local Storage

Im pretty new to this, so please no criticism. ive searched the internet high and low and cannot find any tutorial or git Fix for this. im trying to create a graph from user input. so i can set storage in the app and save value with time stamp. i have a set of information stored in the database. what i cannot do is pull that information from local storage and post to a ng2 graph. any help on this would be really greate.

many thanks,