An interactive way to explore 2d arrays (especially for correlations and coincidences).

Click here to open it!

Intro

You can:

• Load any csv file with numerical values (first column and first row specify the labels).
• Lookup values.
• Sort rows and columns.
• Explore multidimensional data (e.g. 100 dimensions).

Examples of usage:

• Exploring correlation matrix.
• Looking at projections of variables on principal components.
• Discovering dependencies between two sets of variables (e.g. countries vs diseases).

License

CC-BY Piotr Migdał at Compass Inc.

Loose notes

To do

• examples
• polishing sorting
• autodetect of correlation vs count data

Feature creep

• ? Gray lines when mouse-on
• Importance, principal component, linkage sorts?
• Make sorting more consistent
  • Alphabetic and Orginal as buttons
• pseudo-symmetric sort, when first one axis, then automatically along the other
• Bootstrap or some other nice interface? Or rather keep it bare-bone?
• Easier search for / filtering variables?
• Some listing of previously loaded csv files?
• Some scales, not only -1 to 1 (so it will be usable also for counts)

Ideas

• How to work with many variables?
  • Make first n variables bigger?
• If and how allow more datapoints per pixes (e.g. also Spearman correl)
• How to expand it into a 2d scatter/histogram plot per each correlation?
• Show how much position changed?