City of Toronto digital orthoimagery 2003

Description

This data resource consists of 3,084 individual black and 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 7.5 cm.

A detailed 2003 index provides the 9-digit tile identifier (e.g. 6320 48580) for each image. Please use this index to determine the tile identifiers of the images that interest you.

Spatial reference and data type

These georeferenced images are available in Universal Transverse Mercator (UTM) zone 17, North American Datum (NAD)83 coordinate system. They are stored as compressed MrSID data files, with accompanying Sid World (SDW) data files. Average file size of one MrSID image is 4 MB.

Data access

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.

Data manipulation and storage

There are public workstations in the Geospatial Centre that provide access to ArcGIS software programs, program extensions and data manipulation utilities. Patrons may use the Geographic Information System (GIS) and image processing software in the library to view and manipulate the data. UWaterloo faculty, students and staff may copy these data to other media (for example: CD, DVD or Zip disc) for use elsewhere.

Data output

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 Adobe Illustrator (AI), Encapsulated Postscript (EPS), and Scalable Vector Graphics (SVG). Yet another option is PDF. The user defines the output resolution.

Use restrictions/licensing/copyright

These data are provided for personal use for academic, research, and/or teaching purposes. A data release agreement must be agreed to 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.