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 UTM co-ordinates; horizontal datum is NAD83, and are stored in MrSID image format with accompanying SDW world 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 between the hours of 9:30am-4:30pm, Monday to Friday, in Environmental Studies 1, Room 246. 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 GRCA, 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 GIS software and other related programs and utilities. To view these images in ArcView, the MrSID Geoviewer extension must be turned on. ArcMap will automatically display a MrSID image. Patrons may use the GIS software in the library to view and manipulate the data. UW 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 ArcView 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 signed before the data is delivered. The Grand River Conservation Authority should be acknowledged on any derivative product, such as a map or an image.

Citation:

The City of Guelph Digital Orthophotos [computer file]. Guelph, Ontario: GRCA, [2000].

Sample View of the Data:

Guelph Correctional Center

, Library Assistant
May 25, 2012

Maps • Geospatial Centre