"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.

 

1292 books out of 2449 items checked out at 17:00, 02.16.2018

[2449] Total items checked out [0641] Dewey (non-fiction) Books [0651] Non-Dewey (fiction) Books
[1292] Total Books [1073] Media (dvd, cd, etc.) [0009] 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


  159   [741] Drawing + drawings
  47   [641] Food + drink
  22   [973] General history of North America United States
  17   [746] Textile arts
  16   [158] Applied psychology
  12   [398] Folklore
  12   [616] Diseases
  12   [914] Europe
  10   [811] Poetry
  10   [636] Animal husbandry
  9   [745] Decorative arts
  8   [613] Promotion of health
  8   [932] History of ancient world Egypt
  8   [917] North America
  7   [915] Asia
  7   [6] Special computer methods
  7   [332] Financial economics
  6   [155] Differential + developmental psychology
  6   [635] Garden crops (Horticulture)
  6   [650] Management + auxiliary services

Hourly Histogram of Circulation Activities

View a Previous Date | 02.12 | 02.13 | 02.14 | 02.15 | 02.16 | 02.17 | 02.18 | 02.19 | 02.20 |

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