Viewing an R function's source code is usually straightforward, but sometimes a few extra steps are needed.
While Excel is handy for doing simple stuff with data, eventually there comes a time where you need more.
Using code to leverage GIS tools is tricky, but rewarding.
Measuring the surface area of a leaf is quite simple with Matlab.
While there's a bit of a learning curve, once you get the hang of plotting with ggplot2 you'll never look back.