Joel's Tricky Octave Installation on His Mac.. There are numerous ways to install Octave on a Mac. The Octave homepage listed on my Math 307 page will tell you how. I just want to point out that the installation can be a bit tricky on a Mac, and I want to tell you what I needed to do, in case you have issues that are similar to mine. I will try to recall what happened, but it's a bit of a blur. The upshot is that I had some minor problems, some kinda weird ones that I don't understand, but everything works great now. I am a big fan of MacPorts. That is what I used. I used MacPorts about a year ago to install a bunch of stuff. I thought that to install Octave, I would simply need to "su" to an admin account and type: sudo port install octave This failed. So I went through all the MacPort steps: (1) downloaded the latest Xcode, and (2) from Xcode I installed Command Line Developer Tools. At some point I also ran Xcode and accepted a license. Again, I typed sudo port install octave-devel +atlas+docs (which is recommended at http://wiki.octave.org/Octave_for_MacOS_X ), and it failed to install some program (I think it was "gnuplot" or something like that) on which Octave depends. So then I typed sudo port install xxxx where xxxx was the program on which Octave depends that failed to install. This worked!!! Then I typed something like sudo port install octave-devel +atlas+docs which worked as well!!! And I was happy... ...I was happy until I ran LaTeX, and found that MacPorts had build a different version of LaTeX into my system and made that the default LaTeX version. I fixed this temporarily by putting "/usr/texbin:" first in my path, but then decided to use the MacPorts LaTeX version but give the "full installation" via sudo port install texlive +full Once again everything worked and I was happy. At least for now...