LiDAR LAStools with QGIS. Create DEM and Contour lines ✔️✔️✔️

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▶️ LiDAR LAStools with QGIS. Create DEM and Contour lines.

This minicourse consist in 3 video tutorials. In the first one, you are going to learn how to create a Digital Elevation Model (DEM) with QGIS using data from Google Earth. In the second one, you are going to learn how to use LASTool to process LiDAR data to create a DEM with QGIS. Also, you are going to see how to get the contour lines from both models. The third one is going to be a comparison between the two models and we will have a discussion about the accuracy of the ground elevation from Google Earth data.

▶️ What you are going to learn in Part 2:

✔️ Where downloading the LAStools
✔️ Setting up LAStools in QGIS 3.10 A Coruña
✔️ Download LiDAR data and checking metadata
✔️ Analyzing LiDAR data: lasinfo
✔️ Visualizing LiDAR data 3D: lasview
✔️ Creating DEM: las2dem and blast2dem
✔️ Visualizing DEM 3D
✔️ Contour lines extraction
✔️ Labeling and symbology

▶️ Links of interest:

[zachmorris]

This video was so helpful. I have been trying to find an easy way to process .las files for months, and never could gt LAStools to work right. Followed the instructions and it worked great. Thank you!

[bololo]

Thank you very much for the tutorial. I normally do not work with LIDAR data, as an architect I usually get the countours or height points of a certain lot from surveyor and lets generate terrain in a CAD software. But I found out our state cadastre just began to offer las files with terrain data from aerial scanning and this might be useful for a conceptual design at the moments like this when there are tons of snow on the lot and an in/situ surveying might be impossible. I thought there is an easier workaround just to filter the ground points, mesh the cloud with filling the holes where buildings stands and export the mesh as a file that can be import to CAD or Sketchup as a polygons. But your tutorial was the closest way to what I wanted to reach. I just exported the DEM to STL file that I am able to import in a project as a terrain object. Maybe somebody who works in architectural design might know an easier workaround. Just one more question when doing LAS to DEM, what is happenning with the holes and gaps in the point cloud that are left after other classes like buildings, vegetation etc. has been deleted?

[Fauzanazhima]

Thankyou very much for the tutorial, this was so helpful. Can you make a video How to remove vegetation in DEM data to find the structure underneath?

[trezjuri]

you save my live.
Thanks because j must do it to pass at university exam

[nazishiftikhar]

Can youvplease make a video on snow damages through lider data in qgis ?

[mohamedhamoud]

I opened the site of countygp..
But I can't download any data, the site doesn't provide the data as it provides to you..
What is the solution please?

[mattthomas]

Hi I keep getting "LAStools console output The system cannot find the path specified" but im clicking on a .las file. Do you know what the issue might be ?

[kayemimages]

That background "music" is really distracting and TOTALLY unnecessary!!!