Mass calculation + visualization

[bhallen]

Mass calculation is effectively already complete: just have the user select some segment pairs and output the file with them as usual (in their selected location). This output file can be read in by the visualization functions.

To-do:

• add Visualize dropdown menu, with options Heatmap, Hierarchical Clustering, Principal Components
• create a basic interface (shared by all three) that reads in a data file and produces a visualization
• package the necessary libraries with PCT: scipy.cluster.hierarchy, matplotlib, seaborn, sklearn.decomposition

[jsmackie]

I'm stalled on this until I can get seaborn and pandas to install properly (I have matplotlib and sklearn working).

[bhallen]

Hmm, it may be better to just refactor the visualization code so that it doesn't depend on seaborn or pandas. I just used them for some shortcutting and extra-pretty graphs. I'll try to work on this next.