I used the Voyant Tool called "Links," which, according to its "Voyant Tools Documentation" site, "represents the collocation of terms in a corpus by depicting them in a network through the use of a force directed graph." For this exercise, I had this tool visualize the Book I of Milton's Paradise Lost.http://voyeurtools.org/tool/Links/?corpus=1382415075548.616&stopList=the%2C%20and%2C%20to%2C%20that%2C%20thir%2C%20a%2C%20as

The other tool, also from Voyant, is called "ScatterPlot." The link should lead you to a scatterplot. The numerical figures and the way this graph works I'm still trying to grasp and puzzle out.

http://voyeurtools.org/tool/ScatterPlot/?corpus=1382417240752.27&stopList=the%2C%20and%2C%20to%2C%20that%2C%20thir%2C%20a%2C%20as&type=

Here's another link to the same graph but I tweaked it to present more words:

http://voyeurtools.org/tool/ScatterPlot/?corpus=1382417240752.27&stopList=the%2C%20and%2C%20to%2C%20that%2C%20thir%2C%20a%2C%20as&analysis=pca&clusters=5&limit=100&type=of&type=in&type=his&type=with&type=or&type=from&type=on&type=he&type=by&type=th'&type=heav'n&type=for&type=but&type=all&type=they&type=who&type=not&type=what&type=him&type=then&type=our&type=when&type=this&type=be&type=so&type=though&type=yet&type=like&type=were&type=now&type=whom&type=such&type=nor&type=hell&type=gods&type=at&type=these&type=if&type=whose&type=had&type=how&type=high&type=hath&type=first&type=which&type=where&type=we&type=was&type=us&type=lost&type=it&type=is&type=her&type=have&type=force&type=can&type=thus&type=through&type=those&type=stood&type=out&type=one&type=more&type=may&type=fire&type=till&type=them&type=strength&type=power&type=great&type=god&type=while&type=soon&type=fell&type=far&type=came&type=thence&type=spirits&type=round&type=own&type=once&type=next&type=new&type=never&type=light&type=i&type=here&type=call'd&type=arms&type=will&type=under&type=thou&type=there&type=temple&type=sons&type=some&type=shall&type=seat&type=place&type=old

For both tools, I implemented a stop word list, in which I prevented the tools from considering the words, "the, "and, "to, "that, "thir, "a," and "as."