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ionic 3 is based off angular 2/4/5. there is a library that you can use to connect to firebase called angularfire2.

here's the documentation: https://github.com/angular/angularfire2

as far as the chart is concerned, you can get the data retrieved from the firebase. (usually you have to loop through the array of retrieved firebase data and clear the linechartdata[0].data element and assign the retrieved data into the element. afterwards, two-way binding in angular will do its magic.


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