3dplot scatter points via python
Question: I just used `numpy.loadtxt('filename', usecols=(0,))` to load a csv with the
following format:

    
    
    x,y,z
    1.1,2.2,3.3
    5.5,1.45,6.77
    

(There are ~1M lines). I'd like to make a scatterplot. I searched the web and
found `numpy.meshgrid` and `mlab.surf` but I'm not sure what to do. Please
point me in the right direction.


Answer: I think you can use [matplotlib](http://matplotlib.org/), it's very powerful,
and widely used, most importantly, it has good document and is easy to use.

Hope helps!

