Extract cross-sections from a DEM

How do I extract a cross section from a Dem?

The tool can use your existing line layer to extract the profile from the raster data.



1 Answer

1. Select the raster image.
2. Add Layer.
3. From the drop-down list select Selected Polyline.
4. Select the line layer.
5. Select the line in the map view the one above the raster image.

How do I create a geological cross section in Qgis?

Construction of geological cross sections in QGIS

1. MAKE YOUR MAP.
2. SUBSET YOUR OUTCROP DATA.
3. PERFORM A SPATIAL QUERY.
4. ADD qProf PLUGIN TO QGIS.
5. USE qProf TO BUILD YOUR PROFILE.
6. ADD THE RELEVANT GEOLOGICAL INFORMATION TO YOUR PROFILE.
7. EXPORT THE PROFILE.
8. INTERPRET THE SUBSURFACE!

How do you extract contour lines from DEM?

Create Contours from DEM

1. Go to Raster menu >> Extraction >> Contours.
2. In the Contour window: enter your parameters: eg. 50 meter interval, save to file as a shapefile, geopackage, dxf, etc.

How do you visualize cross sections?

Quote from video: Your horizontal cross-section is going to be a square a vertical cross-section that goes through the vertex is going to give you a triangle similar to what it did is for a cone.

How do you make a geological cross section in Arcgis?

Quote from video: Click on the Peck. Section a target layer. And say and apply and so then you see our our layer is the cross section is now selected.

How do you create a cross section in Arcgis?

Quote from video: I'll use the select by location tool to select wells within a certain distance of the section. Line. Next I activate the XS 2d wizard tool with the wizard enabled I select a section line.

How do you plot a cross section graph?

Quote from video:

How do you work out the cross section of a 3d shape?

Quote from video: Any side can be the base really. So I when you cut parallel or perpendicular on a rectangular prism. You form a rectangle.

How do I download DEM data?

You can download the ASTER DEM data for free from the USGS Earth Explorer. Under the data sets tab, select Digital Elevation > ASTER.
 

How do I download a DEM for an area?

Best 6 Free Sources for Download DEM Data

1. USGS Earth Explore.
2. OpenDEM.
3. Bhuvan NRSC.
4. JPL – NASA (SRTM)
5. JPL – ASTER Global DEM.
6. JAXA EORC ALOS.