change of factor, minor stuff
Added extragrades for comparison
Changed the plot for extragrades to be standard with all the other plots.
Check pc, write a plot of extragrades
Started on a new plot. Comparison of weights.
Changed plot title
Increased the weighting data in the w plot. It may be too confusing now.
New script for US data
Started working on getting more data into each column. pH is good, CaCO3 is a little incomplete. Next on the hit list is C and N. I may be able to use a few tricks to add a few rows of that data. Ultimately I would like to be able to process 50% of the data.
added a plot
Improved qhull_algorithm so that it now takes an arbitrary number of dimensions at a time.
Added .png to .gitignore.