"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.

 

1821 books out of 2929 items checked out at 14:00, 01.02.2019

[2929] Total items checked out [0835] Dewey (non-fiction) Books [0986] Non-Dewey (fiction) Books
[1821] Total Books [0953] Media (dvd, cd, etc.) [0008] 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


  137   [741] Drawing + drawings
  64   [641] Food + drink
  21   [891] East Indo-European + Celtic
  19   [746] Textile arts
  18   [613] Promotion of health
  17   [811] Poetry
  16   [973] General history of North America United States
  16   [917] North America
  15   [305] Social groups
  14   [398] Folklore
  13   [914] Europe
  13   [599] Mammalia (Mammals)
  13   [158] Applied psychology
  12   [796] Athletic + outdoor sports + games
  12   [155] Differential + developmental psychology
  11   [612] Human physiology
  9   [791] Public performances
  9   [362] Social welfare problems + services
  9   [688] Other final products + packaging
  9   [745] Decorative arts

Hourly Histogram of Circulation Activities

View a Previous Date | 12.29 | 12.30 | 12.31 | 01.01 | 01.02 | 01.03 | 01.04 | 01.05 | 01.06 |

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