This data resource consists of 3,084 individual black & white orthoimages which provide coverage of the City of Toronto. These images were flown in 2003 by J D Barnes and then provided to the Geospatial Centre by the City of Toronto, Geospatial Competency Centre in June 2005. The resolution of these photos is 7.5cm.
A detailed clickable index provides the 9-digit tile idenitifier (e.g. 6320 48580) for each image. Please use this index to determine the tile identifiers of the images that interest you.
These images are stored on three DVD disks that are located in Geospatial Centre Controlled Access, call number G3464.T7A4 2003.T72x. Note that images 6230 44805 through 6345 48440 (central Toronto) are also stored online.
These georeferenced images are available in UTM zone 17, NAD83 coordinate system. They are stored as compressed MrSID data files, with accompanying SDW world files. Average file size of one MrSID image is 4 MB.
In order to access these data sets, please visit the Geospatial Centre Reference Desk during reference hours. Library reference staff are available to provide further information about these data sets and to deliver data upon request. Under the terms of the Library's license agreement, these images are for use by students, faculty, and staff at the University of Waterloo only.
There are public workstations in the Geospatial Centre that provide access to both ArcGIS and ArcView software programs, program extensions and data manipulation utilities. Patrons may use the GIS and image processing software in the library to view and manipulate the data. UW faculty, students and staff may copy these data to other media (for example: CD, DVD or Zip disc) for use elsewhere.
These images may be exported from ArcGIS in a choice of bitmapped formats (also known as raster graphics) including JPG, TIFF, GIF, and BMP or in a choice of vector graphics formats including AI, EPS, and SVG. Yet another option is PDF. The MrSID Geoviewer may also be used to export the image, in whole or in part, as either a TIFF or GeoTIFF image. The user defines the output resolution.
These data are provided for personal use for academic, research, and/or teaching purposes. Library staff will ask patrons to read and sign a data release agreement before these licensed data can be released. The City of Toronto, Geospatial Competency Centre must be acknowledged on any derivative product, whether printed or electronic, including for example, a printed map, a raster or vector graphic, a web-based application, etc. Patrons are advised to fully respect the provisions of Canada's Copyright Act as well as terms and conditions imposed by the data provider.
City of Toronto 2003 Orthoimagery [computer file]. Toronto, Ontario: City of Toronto Geospatial Competency Centre. [2003].
Click image to zoom in
June 4, 2012
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