Jean, In the US most areas that have flown LiDAR also provide DEM (raster terrain models) created from the ground points of the datasets. >From there it is easy to create contours. NOAA has an inventory of all the areas that have data: https://coast.noaa.gov/inventory/?redirect=301ocm
On Thu, Mar 4, 2021 at 9:12 PM Nicolas Cadieux <njacadieux.git...@gmail.com> wrote: > Hi, > > If you want to create contour lines, you will need a Lidar data point and > then create a DEM from which you will extract contour lines. (That’s the > most common way of do it!) > > LiDAR is new in QGIS and i’am not sure what files formats are supported > yet. I had trouble with the current version. It did show support for a > json file format but I expect the las/laz format support will pop up once > the bugs are worked out. In the mean while, I would use CloudCompare > (OpenSource) to read the cloud and create the DEM. Then, you could import > the DEM into QGIS to extract the contour lines. > > If you want us to propose à data sets, then, I suggest you give us an idea > of where you are working. LiDar data is currently spars depending on the > country and area. You may get lucky as more open data is being produced > every day. > > I may suggest the lastool (openlaso) user list. They have good knowledge > of lidar data sources. Lastool is a suit of tool to work with LiDar. Some > tools are OpenSource and some are not. Read the individual license so you > don’t violate the licenses. > > Good luck > > Nicolas Cadieux > https://gitlab.com/njacadieux > > Le 4 mars 2021 à 09:37, jean Lukusa <luku...@gmail.com> a écrit : > > > Thank dear Kirk > I > My purpose is to generate topographical contour. > Do you Can suggest to my what lidar . > > Jean Lukusa > B.Sc. Geology > Trained on Jorc Code > GIS Operator > +243812156128 > > Le jeu. 4 mars 2021 à 14:32, Kirk Schmidt <k...@nortekresources.com> a > écrit : > >> Hi Jean: >> >> I am not sure what you are looking for? >> >> Do you want to download a lidar derived image (such as a surface model) >> or do you want to work with raw point cloud data? >> >> Kirk Schmidt >> On 3/4/2021 8:41 AM, jean Lukusa wrote: >> >> Hi all , >> how Can I download Lidar image from Qgis 3.18.0 ? >> >> Jean Lukusa >> B.Sc. Geology >> Trained on Jorc Code >> GIS Operator >> +243812156128 >> >> _______________________________________________ >> Qgis-user mailing listqgis-u...@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> >> -- >> Kirk Schmidt, MScF, BScF, RPF >> General Manager >> Nortek Resource Solutions Inc. >> RR # 1 >> Thorburn, NS >> B0K 1W0 >> Tel (902) 922.3607 >> Email: k...@nortekresources.com >> Web: www.nortekresources.com >> >> _______________________________________________ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >
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