One great way to get help with R is by asking a question on the r-help mailing list. More often than not I have actually figured out the answer simply by typing up the question, because that made me think more clearly about what the problem really was. The people on the list are exceedingly […]
When you start using R, it can be confusing that if you assign something to an object you do not get visual feedback: x x [1] 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 You can exploit this fact for doing a quick-and-dirty lottery. Assume you have a […]
So, you want to send an e-mail to a list of people, but you don’t want to put them all in the “To:” or the “Bcc:” field of a single mail. You want each person to get an individual e-mail, but with the same subject line and the same content. It’s easy using mutt. Create […]
I’ve written a small script that checks whether I have queued mail and that displays a notification icon via “zenity –notification” in case I do. I wanted to run it using ~/.crontab but it wouldn’t run. First, I got error messages from the cron daemon that looked like this: (zenity:22981): Gtk-WARNING **: cannot open display: […]
I like the graphical login screen on my laptop to display my e-mail address. In case I lose the laptop and an honest person finds it, they should at least have the possibility to return it. In the latest versions of Ubuntu or Xubuntu, you can change the welcome message via the settings menu for […]