City of Guelph orthomosaic 2000

Description

This data resource consists of several georeferenced orthoimages compressed into one MrSID image covering the City of Guelph. Aerial photography was flown in April 2000. Pixel resolution is 35 cm. The orthomosaics were provided to the Library by the Grand River Conservation Authority in February, 2004.

Spatial reference and data type

These mosaics are available in Universal Transverse Mercator (UTM) co-ordinates; horizontal datum is North American Datum (NAD) 83, and are stored in MrSID image format with accompanying Sid World (SDW) files. Other data formats can be accommodated, as the Geospatial Centre has access to a number of conversion utilities.

Data access

In order to access these images, please visit the Geospatial Centre reference desk during reference hours when 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 with the Grand River Conservation Authority, these data sets are for use by students, faculty, and staff at the University of Waterloo only.

Data manipulation

There are public workstations in the Geospatial Centre with access to Geographic Information System (GIS) software and other related programs and utilities. ArcMap will automatically display a MrSID image. Patrons may use the GIS software in the library to view and manipulate the data. UWaterloo faculty, students and staff may copy these data to other media (Zip disk or CD-R disk) for use elsewhere.

Data output

These mosaics may be exported from ArcMap as images such as jpeg, or bmp. Additionally, ArcMap is able to export images as georeferenced TIFF extensions. Users may also choose to export images from MrSID Viewer as a Tiff or GeoTiff image. The mosaics may also be printed as a map view using one of the library's colour printers.

Use restrictions/licensing/copyright

This material is provided for academic, research, teaching, and personal use only. A data release agreement must be agreed to before the data is delivered. The Grand River Conservation Authority should be acknowledged on any derivative product, such as a map or an image.