City of Toronto digital orthoimagery 2017

Description

2017 orthoimagery was received June 2018 from the Geospatial Competency Centre, Mapping Services, City of Toronto. Imagery was taken March 23^rd, April 13^th, 23^rd, 24^th and covers the entire City of Toronto. The full colour imagery has a resolution of 8 cm ground pixel and consists of 3,797 tiles each covering an area of 0.5 km².

Extent of orthoimagery

A detailed index (PDF) provides the four digit identifying number for each .5 km tile.

Spatial reference and data type

Coordinate system for these georeferenced tiled orthos is Modified Transfer Mercator (MTM) zone 10, North American Datum (NAD) 1927. Average file size for each tile is 7 MB, and the entire set is 74 GB.

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.

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.