Using R's goodness-of-fit tests in iPython Notebook

Some additional items need to be first installed on the SA421 virtual machine in order for this to work:

1. Open UXTerm.

2. In the UXTerm window, install rpy2 by typing sudo pip install rpy2 at the prompt. Use simulation when prompted for a password.

3. In the UXTerm window, install singledispatch by typing sudo pip install singledispatch at the prompt.

4. Run R in the UXTerm window by typing sudo R at the prompt.

5. Install the fitdistrplus package in R by typing install.packages("fitdistrplus") at the prompt. A dialog window will appear with a list of mirrors. Choose any one.

6. Quit R by typing quit() at the R prompt. Close the UXTerm window.

You should now be ready to run R and its goodness-of-fit tests in iPython Notebook.

• This iPython Notebook uses R's goodness-of-fit tests to determine whether arrivals to a Twitter feed follow a Poisson process (i.e. exponentially distributed interarrival times).
• This iPython Notebook depends on this data file. Make sure both files are in the same folder.
• The documentation for the fitdistrplus package can be found here.