I have two excel files. One is quarterly GDP data and the other file is monthly data for two other variables. I need to construct one time series data set to load into R that will convert the monthly data into quarterly using average value and combining that into the existing quarterly data to form one data set in time series format.
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Hello I can achieve this project perfectly using R I can use ggplot2 to visualize the time series please check my portfolio it contain some example of my time series outputs best regards