The three data sets for problem set 8 are available
 <a href="ftp://ftp.cs.colorado.edu/users/lizb/"> here </a>.
<p>
That link appears to be broken; until it gets fixed, here's a <a
href="4446.zip"> zip file </a>.
<p>
There are a couple of things that you should note:
<p>
These are real-world-size data acquisition files (i.e., many MB), and
part of the point of this problem set is to learn how to deal with
memory-intensive tasks like this.  You may have to hack around a bit:
only reading in 1000 points at a time, etc etc.  If you have
unavoidable trouble because of the size of these data sets and your
(computer's) memory, please come see me.
<p>
NB: If you're ever rummaging around in net data and find a
'.gz' suffix, it means that a file has been compressed with gzip.
The way to decompress it is:
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gzip -d foo.gz
<p>
...which will transform foo.gz into foo and leave it in the same
directory.