Julia wrapper for LibLAS, a library for reading and writing the LAS LiDAR format.
Note: Like LibLAS itself, this project is currently in hibernation or maintenance mode. For reading and writing LAS files in pure Julia, have a look at
pkg> add https://github.com/visr/LibLAS.jl
You need to have the liblas_c shared library in your path, this is currently not added to the package. See the LibLAS website for how to obtain it.
using LibLAS # testfile downloaded from http://www.liblas.org/samples/ filename = joinpath(dirname(pathof(LibLAS)), "..", "test", "libLAS_1.2.las") reader = LibLAS.create(LibLAS.LASReader, filename) header = LibLAS.lasheader(reader) n = LibLAS.pointrecordscount(header) bounds = [LibLAS.min_x(header), LibLAS.min_y(header), LibLAS.min_z(header), LibLAS.max_x(header), LibLAS.max_y(header), LibLAS.max_z(header)] function mean_coordinates(header, reader) n = LibLAS.pointrecordscount(header) x_sum = 0.0 y_sum = 0.0 z_sum = 0.0 # looping over all points for i = 1:n p = LibLAS.nextpoint(reader) x = LibLAS.xcoord(p) y = LibLAS.ycoord(p) z = LibLAS.zcoord(p) x_sum += x y_sum += y z_sum += z end x_avg = x_sum / n y_avg = y_sum / n z_avg = z_sum / n x_avg, y_avg, z_avg end x_avg, y_avg, z_avg = mean_coordinates(header, reader) # jumping to a specific point p = LibLAS.point_at(reader, 101) intens = LibLAS.intensity(p)
For more documentation on specific functions see the LibLAS C API reference. Function names are adapted to follow Julian naming conventions. They have not all been tested. Please open an issue/PR if you find any mistakes.
over 1 year ago