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GEOGRAPHY OF SIERRA LEONE

PRESENTATION BY STATISTICS SIERRA LEONE ON THE USE OF GPS TO DESIGN ENUMERATION AREAS: A CONVENIENT SOLUTION FOR DEVELOPING NATIONAL SAMPLING FRAMES. GEOGRAPHY OF SIERRA LEONE. DATA COLLECTION. Georeferencing of urban and rural maps at scales of 1:25,000 and 1:50,000 respectfully.

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GEOGRAPHY OF SIERRA LEONE

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  1. PRESENTATION BY STATISTICS SIERRA LEONE ON THE USE OF GPS TO DESIGN ENUMERATION AREAS: A CONVENIENT SOLUTION FOR DEVELOPING NATIONAL SAMPLING FRAMES

  2. GEOGRAPHY OF SIERRA LEONE

  3. DATA COLLECTION • Georeferencing of urban and rural maps at scales of 1:25,000 and 1:50,000 respectfully. • Printing of maps with UTM co-ordinates for use in the field. • Collection of GPS (Garmin 12) co-ordinates of the following • Localities • Administrative boundaries • Educational institutions • Health facilities • Other social facilities eg. Churches,mosques etc.

  4. DATA CAPTURE • Fair drawing and demarcation of enumeration areas and administrative boundaries using GPS co-ordinates and natural features. • Data entry of GPS co-ordinates using excel • Conversion of GPS co-ordinates into dbase iv for processing in Arcview • Scanning of map sheets using AO scanner. • On-screen digitization of administrative boundaries down to EA level. • Editing and cleaning of EA shapefile using ArcEditor. • Linking of census database to EA shapefile for analytical planning with respect to health,education,agriculture etc.

  5. ATTRIBUTE DATA OF AN EA

  6. POINT DATA OF ENUMERATION AREAS

  7. DIGITIZED EA DATA BASE (9,671 EA’S)

  8. CENSUS DATA LINKED TO EA SHAPE FILE

  9. USE OF EA DATA BASE • National sampling frame • Delimitation of electoral wards • Reproduction of constituency maps • Reproduction of administrative maps (District,chiefdom and sections) • Spatial distribution of health and educational facilities

  10. THANK YOU FOR LISTENING

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