France Lidar Data

Discussion in 'PC Editor Discussion' started by flashnew#8146, Oct 18, 2024.

  1. flashnew#8146

    flashnew#8146 Member

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    I wanted to try making a new route in the Editor after abondining my previous route project 6 months ago. As by the title you can see that i wanted to try a French route for my new project (Will never be finished though in all fairness due to knowing nothing about blender). Anyway i started and got the path and location pins done, but when it came to lidar in qgis i dont know how to get it. i used this https://geoservices.ign.fr/lidarhd but it doesnt download as a dtm file (where as the guide and my previous UK project Shows/did). it downloads as a LAZ.file not a tif it shows up as a bunch of coloured dots when putting it in qgis

    How do i get France dtm lidar to work in qgis so i can continue?

    Thanks in advanced if anyone can help
     
    Last edited: Oct 18, 2024
  2. RobertSchulz

    RobertSchulz Well-Known Member

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  3. flashnew#8146

    flashnew#8146 Member

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    Thank you, will take a look later, still very new to this especially in qgis, the rest i know (adding the lidar to editor,track laying) just the new lidar file (LAZ) confused me. Much appreciated for the help
     
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  4. WabbeLKonG

    WabbeLKonG Active Member

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    I'm currently on vacation so I can't check if it's still the same as before, but I downloaded my LiDAR data here:
    https://geoservices.ign.fr/rgealti

    I seem to remember that if you click through the (unzipped) download’s subfolders, you eventually get to a place where you have to choose between three subfolders. One of them contains .ASC files, which also appear in grayscale in QGIS. You need these, the rest (e.g. the folder with colorful .TIF files) can go. The rest of the process should then look exactly the same as with LiDAR data from other sources.

    PS: If this helps you later, I think I also know that the CRS of the French LiDAR tiles was LAMB93.
     
    Last edited: Oct 19, 2024
  5. flashnew#8146

    flashnew#8146 Member

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    Yh thats the same website i used only i was on a different page where you click the squares you want (or draw a polygon but the clicking individual squares was better for me) and when i download it just downloads a LAZ.file no zipFolder. Ive ran into another problem where using the LAZ tutorial when you have to split it doesnt download anything.

    The CRS was something i did need so Thank you for providing that as well

    anyway I dont want to disturb you vacation so enjoy and il look into it some more, more then happy to wait in the mean time. Again thanks

    UPDATE (for later). Ok i think ive found the folder version of it, just waiting to finish download. But its for whats called 'Department' area which is a huge area. Is this correct becuse thats a lot of lidar data i wont need, and if it is correct that sucks as i need 2 Departments lol.
     
    Last edited: Oct 20, 2024
  6. WabbeLKonG

    WabbeLKonG Active Member

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    Unfortunately, this is correct. I needed 6 or 7 departments back then ☠︎︎
     
    Last edited: Oct 21, 2024
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