- If you already have a Digital Elevation Model,…or DEM attached to your QGIS map,…you can create contour lines from them.…A contour line is a polyline that's usually based…on elevation along a particular path.…For example, you can have a continuous contour line…that represents 20 feet above sea level,…along that line.…Let's create contours from our DEMs.…First we need to add the DEMs to the map.…So in your Raster folder double click on the…East and West, DEM, that's the .dem files.…
You'll see one has DEMW, meaning West,…and DEME, meaning East.…So first let's create the contour line…for the West DEM.…So under Raster, Extraction, Contour.…In the Contour dialog box…first we pick what file we want to export,…and that's the DEMW, meaning West.…We're going to put the file,…make sure it's a shape file,…because you notice under the files of types…you have all these different types,…DXF, GPX, and so on,…but we're going to pick shape file…and we're going to call this contour_west.…
And just put it on the desktop, make sure this is desktop.…
Author
Released
8/29/2015- Explain how to determine if you should install the 32-bit or 64-bit version of QGIS on a Windows 10 machine.
- Write the command that will navigate you to the "Add WFS Layer from a Server" dialog window in QGIS.
- Identify what format WMS typically delivers images in.
- State which layer properties tab allows you to edit the line layers of a shapefile.
- List the labels tab that should be selected to edit the visibility of vector data labels at certain scales.
- Identify what programming language the OpenLayers plugin is written in.
Skill Level Beginner
Duration
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Introduction
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Welcome47s
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1. Understanding and Installing QGIS
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Overview of QGIS features5m 21s
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Installing QGIS1m 30s
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Exploring the QGIS browser3m 43s
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2. Vector Data with QGIS
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Adding shapefiles to QGIS2m 22s
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Adding WFS data to QGIS3m 52s
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3. Raster Data with QGIS
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Adding ECW data3m 51s
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Adding WMS data4m 46s
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Adding DEM data4m 22s
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4. Styling Data
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Working with point layers3m 52s
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Utilizing polyline layers3m 30s
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Exploring polygon layers4m 6s
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Using thematic layers6m 5s
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Working with DEM layers3m 1s
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5. Labeling Features
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Labelling vector data7m 6s
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6. Changing Default Properties
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Exploring project properties8m 46s
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7. Printing with Print Composer
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Adding maps5m
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Adding elements4m 17s
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8. Creating New Data
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Creating new vector data4m 59s
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Adding data from Excel (CSV)2m 50s
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Editing existing data4m 59s
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9. Using Advanced Tools
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10. Using Plugins
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Conclusion
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Next steps38s
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Video: Creating contour lines from DEM