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  1. 1. African Set Maps Project Library of Congress November 16, 2011
  2. 2. Project Scope <ul><li>Library of Congress, Library Services, Geography & Map Division awarded $240,240 grant from Council on Library and Information Resources (CLIR) </li></ul><ul><li>Catalog approximately 1,800 African multi-sheet map sets and inventory 125,000 map sheets. Provide access through a web portal using Google Earth. </li></ul><ul><li>The collection includes 19 th century to present large scale mapping of Africa by various colonial powers. The largest volume and most expansive collection of African set maps. </li></ul><ul><li>Project team of professionals in various disciplines: Cataloging, Collections Management, Digital, Reference, Information Technology & Policy, Library Technicians, Interns, and an Arabic Language Expert. </li></ul><ul><li>Project span: 2009 – 2011 </li></ul>
  3. 3. Project Overview <ul><li>Identify collection materials </li></ul><ul><ul><li>Database tracking and reporting </li></ul></ul><ul><li>Catalogers review & update </li></ul><ul><ul><li>MARC records </li></ul></ul><ul><li>Statistics </li></ul><ul><ul><li>Set maps fully cataloged – 1,893 (Target exceeded!) </li></ul></ul><ul><ul><li>Maps inventoried – 72,652 sheets or 1,438 sets </li></ul></ul><ul><ul><li>Arabic language map sheets staged – 25,000 </li></ul></ul><ul><li>Challenges </li></ul><ul><ul><li>Coordinate conversions (approx. 43% of collection) </li></ul></ul><ul><ul><li>Arabic language (approx. 25,000 sheets or 20%) </li></ul></ul><ul><ul><li>Technology (Google license) </li></ul></ul><ul><li>Web portal access to the collection </li></ul>
  4. 4. African Set Map Project <ul><li>What is a map set? </li></ul><ul><li>A set map consists of at least 2 or more individual sheets within a map series. </li></ul><ul><li>Usually the individual sheets contain the same data elements such as, scale, sheet name/series, and imprint, issuing body or corporate body. </li></ul><ul><li>At the same time the individual sheets contain different data elements such as, sheet title, coordinates, edition statement, and sheet numbering. </li></ul>
  5. 8. About Cadastral Survey of Egypt <ul><li>Overview: </li></ul><ul><ul><li>Commenced as Survey of State Lands (1892-1907) </li></ul></ul><ul><ul><li>Total Sheet maps are 24,755 </li></ul></ul><ul><ul><ul><li>17,964 at 1:2,500 scale </li></ul></ul></ul><ul><ul><ul><li>3,622 at 1:4,000 scale </li></ul></ul></ul><ul><ul><li>Unit of Measurement: Egyptian Feddan: </li></ul></ul><ul><ul><ul><li>Feddan = 333 1/3 square Qasabah (3.55 meters) </li></ul></ul></ul><ul><ul><ul><li> = 4200.83 square meters </li></ul></ul></ul><ul><ul><ul><li> = 1.038 Acre </li></ul></ul></ul><ul><ul><li>Two main regions: Upper and Lower Egypt </li></ul></ul><ul><ul><ul><li>14 Provinces (Mudīrīyah), </li></ul></ul></ul><ul><ul><ul><li>77 Districts (Markaz) ; or Police Stations; </li></ul></ul></ul><ul><ul><ul><li>3401 Village area (Nāḥīyah). </li></ul></ul></ul>
  6. 10. ILS ILS (Library Catalog) XML Datastore (XQuery) MARCXML Sheets XML Holdings* METS/MODS* KML* MARC Bibliographic Records, Holdings Records, etc Data Entry Form Public LC Web Portal Google Earth Display *Automatically generated from MARCXML and Sheets XML
  7. 14. Establishing a Reference Point <ul><li>Grid data is relative to a point of origin; therefore, a known point can be used to determine the map grid’s point of origin. </li></ul><ul><li>Select an intersection on map sheet and match location on Google Earth. </li></ul>
  8. 15. Determining X of Point of Origin <ul><li>In this case, X of the known point is 21,500 meters east from the point of origin. </li></ul><ul><li>Therefore, measure 21,500 meters west. </li></ul>
  9. 16. Determining Y of Point of Origin <ul><li>Y is 55,500 meters north of the point of origin. </li></ul><ul><li>Therefore, measure 55,500 meters south. </li></ul>
  10. 17. Central Meridian and Longitude of Origin Established <ul><li>11˚ 36’ 30” N </li></ul><ul><li>42 ˚ 56’ 28” E </li></ul><ul><li>Data is entered into Geotrans as point of origin. </li></ul><ul><li>Sheet corner X,Y data is converted against this point to establish longitude and latitude </li></ul>
  11. 18. Sheet Corners