Loads more data without losing the current viewport

[kaijaz123]

Hey there! I know the last maintenance was couple of years ago, but still would like to ask something for this one.

I am now plotting the candlestickchart with the stock data i fetch from API. So what I was trying to achieve is lets say the chart is already plotted for the first time and when user scroll to the left and reaches a point, it will automatically fetch the data from API and gets rendered again and this whole new plotting is done without rescaling the xaxis, means that the current view range (viewport) is maintained while the new data is being plot.

How can i achieve this?