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Work with GDP growth instead of GDP level
Juan Imbet
edited Feb 22, 2018

Hello Everybody

I am new with quantopian, I am building an investment strategy that relies on the following pipeline data

    from quantopian.pipeline.data.quandl import fred_gdp  
    pipe_x=fred_gdp.value

I would prefer to use gdp growth instead of the level itself. I know how to get the growth between last quarter and this quarter by using for example 

(pipe_x[-1]-pipe_x[-n])/pipe_x[-n] # Where n is how far I want to go to calculate de growth

The problem is that I also want to calculate moving averages of growth. Using for example the function SimpleMovingAverage()

Is it possible to have a time series of gdp growth instead of a time series of gdp level?

Thanks in advance

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