I just tried to import it into excel, but it can only accept a little over a million rows of data. It's 3 columns of data, and all I want to do is graph column 1 against 2 and 3 for two graphs.

I am thinking of making a grid preprocessor which divides the 2D landscape up into cells and marks each cell as having or not having an element within it. There will be a fiddle factor for making the cells small enough to discern information from the graph while large enough to be under 1Million filled cells to fit in excel. 

While I do on that or something else, anyone know how to graph all of the data easily?