I am having difficulty properly visualizing aerial LIDAR data from the csc.noaa.gov source.
Taking any of the
.laz files, the point cloud displays as an extremely long thin line of points. Zoomed in, there are cyclic perturbations in the points along that line, which leads me to believe that some sort of transform is necessary to properly visualize the data. For comparison sake, the aerial LIDAR data set found in opentopo.sdsc.edu visualizes as one would expect.
Both claim to use NAD83 as the horizontal coordinate system. From what I can tell, the only major difference is one is
las 1.0 and one is
las 1.2. That being said, I don't really know what I'm doing. Any help in explaining the difference between the two data sets is greatly appreciated.
A little bit of background to help guide an answer. I do not come from a GIS background, but rather am interested in comparing my LIDAR point clouds against a geographically accurate model, say a quality aerial LIDAR collect. For now, while learning, I have been using the free applications LAStools and CloudCompare.