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  • FGDC

Africa, 1834 (Raster Image)

  • Identification Information
  • Data Quality Information
  • Spatial Data Organization Information
  • Spatial Reference Information
  • Entity and Attribute Information
  • Distribution Information
  • Metadata Reference Information
Identification Information
Citation
Originator
Harvard Map Collection, Harvard College Library
Originator
Brue, Adrien Hubert, 1786-1832.
Publication Date
201202
Title
Africa, 1834 (Raster Image)
Geospatial Data Presentation Form
map
Publication Information
Publication Place
Cambridge, Massachusetts
Publisher
Harvard Map Collection, Harvard College Library
Online Linkage
https://hgl.harvard.edu/catalog/harvard-g8200-1834-b7
Abstract
This layer is a georeferenced raster image of the historic paper map entitled: Carte detaillee (en deux feuilles), de l'Afrique et des iles qui en dependent (partie septentrionale), par A. Broue, Geographe du Roi, d'apres les observations astronomiques, les decouvertes et les hypotheses les plus recentes. Revue en 1834. It was published by Chez l'Auteur in 1828, i.e. 1834. Scale [ca. 1:16,250,000]. Covers Africa and a small portion of Europe and the Middle East. Map in French.The image inside the map neatline is georeferenced to the surface of the earth and fit to the Africa Sinusoidal projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, territorial boundaries, roads, mines, shoreline features, and more. Relief shown by hachures. Includes notes and insets: Extremite Sud de l'Afrique, ou Colonie du Cap, Pays des Hottentots et Betjouanas; Archipel du Nord-Est de Madagascar; Abyssinie et Pays des Gallas, etc.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.
Purpose
Historic paper maps can provide an excellent view of the changes that have occurred in the cultural and physical landscape. The wide range of information provided on these maps make them useful in the study of historic geography, and urban and rural land use change. As this map has been georeferenced, it can be used in a GIS as a source or background layer in conjunction with other GIS data.
Temporal Extent
Currentness Reference
source map publication date
Time Instant
1834
Bounding Box
West
-45.965406
East
82.865009
North
51.679764
South
-51.621508
Theme Keyword
Maps
Human settlements
Cities and towns
Landforms
Bodies of water
Infrastructure (Economics)
Transportation
Theme Keyword Thesaurus
LCSH
ISO Topic Category
imageryBaseMapsEarthCover
Place Keyword
Africa
Place Keyword Thesaurus
LCSH
Temporal Keyword
Access Restrictions
None
Use Restrictions
For educational, non-commercial use only.
Status
Complete
Maintenance and Update Frequency
None planned
Point of Contact
Contact Organization
Harvard Map Collection, Harvard College Library
Delivery Point
Harvard Map Collection
Delivery Point
Pusey Library
Delivery Point
Harvard University
City
Cambridge
State
MA
Postal Code
02138
Country
USA
Contact Telephone
617-495-2417
Contact Facsimile Telephone
617-496-0440
Contact Electronic Mail Address
hgl_ref@hulmail.harvard.edu
Hours of Service
Monday - Friday, 9:00 am - 4:00 pm EST-USA
Native Data Set Environment
ESRI ArcGIS 9.3.1
Data Quality Information
Attribute Accuracy Report
The georeferenced raster is a faithfully reproduced digital image of the original source map. Some differences may be detected between the source graphic used and the raster image due to the RGB values assigned that particular color. The intent is to recreate those colors as near as possible.
Completeness Report
Data completeness for raster digital image files reflect content of the source graphic. Features may have been eliminated or generalized on the source graphic due to scale and legibility constraints
Horizontal Positional Accuracy Report
The horizontal positional accuracy of a raster image is approximately the same as the accuracy of the published source map. The lack of a greater accuracy is largely the result of the inaccuracies with the original measurements and possible distortions in the original paper map document. For instance, this map contains grid-like seams that are the result of being formerly folded as a booklet. There may also be errors introduced during the digitizing and georeferencing process. In most cases, however, errors in the raster image are small compared with sources of error in the original map graphic. The RMS error for this map is 22706.34081 meters. This value describes how consistent the transformation is between the different control points (links). The RMS error is only an assessment of the accuracy of the transformation.
Lineage
Source
Originator
Brue, Adrien Hubert, 1786-1832.
Publication Date
1834
Title
Carte detaillee (en deux feuilles), de l'Afrique et des iles qui en dependent (partie septentrionale)
Edition
Revue en 1834.
Geospatial Data Presentation Form
map
Publication Information
Publication Place
Paris
Publisher
Chez l'Auteur
Other Citation Details
1 map : hand col. ; 65 x 51 cm.Includes insets: Extremite Sud de l'Afrique, ou Colonie du Cap, Pays des Hottentots et Betjouanas; Archipel du Nord-Est de Madagascar; Abyssinie et Pays des Gallas, etc.
Source Scale Denominator
16250000
Type of Source Media
paper
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
1834
Source Currentness Reference
publication date
Contribution
Source map for raster image
Spatial Data Organization Information
Direct Spatial Reference Method
Raster
Raster Object Information
Raster Object Type
Pixel
Row Count
8546
Column Count
6567
Vertical Count
1
Spatial Reference Information
Horizontal Coordinate System Definition
Planar
Map Projection
Map Projection Name
Sinusoidal
Sinusoidal
Longitude of Central Meridian
15.000000
False Easting
0.000000
False Northing
0.000000
Planar Coordinate Information
Planar Coordinate Encoding Method
row and column
Coordinate Representation
Abscissa Resolution
1356.907531
Ordinate Resolution
1339.684511
Planar Distance Units
meters
Geodetic Model
Horizontal Datum Name
D_WGS_1984
Ellipsoid Name
WGS_1984
Semi-major Axis
6378137.000000
Denominator of Flattening Ratio
298.257224
Entity and Attribute Information
Entity and Attribute Overview
The indexes reference a color palette of RGB values from 0 through 255, representing the color value from the original paper sheet map. The colors on that sheet can represent relief, drainage, vegetation, populated places, cultural features, coastal hydrography, transportation features (roads, railroads, tracks and trails), spot elevations and boundaries. The colors are sometimes explained in a legend that is incorporated into the map inset or collar.
Entity and Attribute Detail Citation
Not applicable.
Distribution Information
Format Name
JPEG2000
Distributor
Harvard University Information Technology
Online Access
http://hgl.harvard.edu/
Name
Metadata Reference Information
Metadata Date
20120112
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Harvard Geospatial Library
Contact Position
Geospatial Resources Cataloger
Contact Address
Address
Harvard University Information Technology
Address
Library Technology Services
Address
90 Mount Auburn Street
City
Cambridge
State or Province
MA
Postal Code
02138
Country
USA
Contact Voice Telephone
617-495-2417
Contact Facsimile Telephone
617-496-0440
Contact Electronic Mail Address
hgl_ref@hulmail.harvard.edu
Hours of Service
Monday - Friday, 9:00 am - 4:00 pm EST-USA
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
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