The R class R programming for biologists

Week 6 -- February 13th, 2015

The notes from last week are available here. We’ll cover the section “Statistics across factor levels” this week.

A few people mentioned on their post-it that they are still a little uncomfortable with the use of the square brackets. I added three challenges at the top of last week’s lesson so that you can practice your square bracket skills.

I also posted a bigger challenge nicknamed “the sea cucumber challenge”. Don’t feel demoralized if you find it difficult: it is. No matter your level of expertise, when your code works you feel like you have super powers, when you fiddle around to try to find the answer you feel like you have no idea of what is going on. This second state is the manifestation of the learning process.

The two states of every programmer

If you are stuck, don’t hesitate to open an issue on GitHub and ask for help. Remember to read again seeking help before posting your question. If you think you can help someone stuck, please do!

Before you start on the challenge, if you use a Mac, follow these instructions so you don’t have to enter your user name and password for github everytime you push to your repository.

Remember to comment your code so other people will know what you are doing.

See you Friday!