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Maps • Geospatial Centre

DMTI Digital Elevation Model

Description:

This data resource provides a digital elevation model with 30m intervals. This model is based on the NTS 1:50,000, and 1:250,000 map sheets. Index shows DEM coverage available through DMTI. The Geospatial Centre has access to DMTI's data and is available upon request.  For assistance in working with DMTI's DEM data, please consult this tutorial.

Spatial Reference and Data Type:

These data sets are available in both UTM and geographic (lat/long) co-ordinates; horizontal datum is NAD 83. These data are stored as ASCII files, but are also available as ArcInfo Grid, Vertical Mapper (MapInfo ".grd" files), and Planet (UTM projection only) files. Please see the University Map Library Guide to Digital Elevation Data for a brief outline on how to use this data in ArcView and ArcGIS. Other data formats can be accommodated, as the Geospatial Centre has access to a number of conversion utilities.

Data Access:

In order to access this data set, 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 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 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.

Data Output:

These data 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.

Use Restrictions/Licensing/Copyright:

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. DMTI Spatial 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.

Citation:

DMTI Digital Elevation Model [computer file]. Markham, Ontario: DMTI Spatial Inc. , [2011].

Sample View of the Data:

DEM TIN Created Using ArcView

DEM TIN Created Using ArcView


, Library Assistant
May 24, 2012