"Making Visible the Invisible", a data visualization commissioned by the Seattle Central Library, operational since fall 2005


This database receives by the hour all of the checkouts of books, cds, DVDs, and other material that library patrons take out of the library. The data at the library is classified in two separate categories. Non-fiction items receive a Dewey Classfication System coding, explained here: Dewey Decimal Classes. Fictional items are classified in a different way. This visualization features the top 20 most active Dewey categories. Click on each of the categories to get the chronological list of titles checked out during the previous hour.

 

1631 books out of 2856 items checked out at 15:00, 11.27.2017

[2856] Total items checked out [0793] Dewey (non-fiction) Books [0838] Non-Dewey (fiction) Books
[1631] Total Books [1101] Media (dvd, cd, etc.) [0019] Misc

Dewey Decimal Classification Graph

This map highlights current circulating books according to their Dewey classification category in Generalities [0-99]; Philosophy & Psychology[100-199]; Religion [200-299]; Social Science [300-399]; Language [400-499]; Natural Science & Mathematics [500-599]; Technology & Applied Sciences [600-699]; Arts [700-799]; Literature [800-899]; Geography & History [900-999].


     

The top 20 Dewey categories


  177   [741] Drawing + drawings
  57   [641] Food + drink
  23   [746] Textile arts
  13   [398] Folklore
  13   [811] Poetry
  11   [591] Zoology
  11   [305] Social groups
  11   [745] Decorative arts
  11   [658] General management
  10   [362] Social welfare problems + services
  10   [796] Athletic + outdoor sports + games
  9   [940] General history of Europe
  9   [914] Europe
  9   [248] Christian experience, practice, life
  9   [158] Applied psychology
  8   [306] Culture + institutions
  8   [629] Other branches of engineering
  8   [910] Geography + travel
  8   [759] Historical, areas, persons treatment
  7   [793] Indoor games + amusements

Hourly Histogram of Circulation Activities

View a Previous Date | 11.23 | 11.24 | 11.25 | 11.26 | 11.27 | 11.28 | 11.29 | 11.30 | 12.01 |

George Legrady, with Andreas Schlegel and August Black. This active webpage has been operational since October 2005