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How to create contour maps from geotiff maps full version#
How to create contour maps from geotiff maps full#

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How to create contour maps from geotiff maps full#

The Global Mapper found on the library's GIS Workstations has full functionality.

How to create contour maps from geotiff maps full version#

While users can download a free trial version of Global Mapper at, this version is not the full version and does have considerable restrictions that do not allow the user to export to any file type. If you have a site outside Canada for which you need elevation contours, this is how we recommend obtaining them.

Global Mapper is a viewer capable of displaying elevation datasets and allows users to create contour lines from DEMs. **To create contours from a DEM in ArcGIS Pro, find details here.ĪSTER is a technology that was used to create digital elevation models (DEMs) for the entire globe at a 30 metre resolution, which means each pixel is 30m x 30m and has one elevation value assigned to it. **To create contours from a DEM in QGIS, use the Raster > Extraction > Contour built-in tool then save contours as shapefile or DWG.

Export the contours to AutoCAD Drawing (.dwg) or shapefile (.shp) format.

Create contours from the DEM in Global Mapper.

Load a DEM into Global Mapper find your location.

If you're working in Ottawa, you have a couple of options: the 2012-2015 1m LiDAR-derived digital surface model (includes buildings/trees) or 2001 25cm DEM We recommend the 1:50,000 / 30m CDEMs from Natural Resources Canada for locations within Canada, ASTER for non-Canadian locations

Find a digital elevation model (DEM) for your area on the NASA Earthdata website.

If none of the options on our Elevation Data page meet your needs, this help guide will show you how to: