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lasmerge: merge multiple LAS files into a single file
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:Author: Martin Isenburg
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:Contact: isenburg@cs.unc.edu
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lasmerge reads multiple LIDAR data files in the LAS format and merges them
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into a single file. The filenames can either be provided one by one or in
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All the header information of the first file provided is used including
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variable and user_defined headers. but some records are updated by
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integrating the corresponding information from other headers. these are:
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* number_of_point_records
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* number_of_points_by_return[5]
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* max_x, min_x, max_y, min_y, max_z, and min_z
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In addition x_scale_factor, y_scale_factor, z_scale_factor may need to be
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increased to accommodate a possibly larger bounding box. The user can
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also set those in the command line with
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-scale 0.01 or -scale_xyz 0.01 0.01 0.001
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Similarly a new offset can be specified
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-xyz_offset 63025000 483450000 0
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$ lasmerge -i in1.las -i in2.las -i in3.las -o out.las
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merge the three inX.las files into one out.las file.
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$ lasmerge -i las_file_list.txt -o out.las
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merges all LAS files listed in the text file into one out.las file
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$ lasmerge -i las_file_list.txt -o out.las -scale 0.01 -verbose
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merges the file and stores the LIDAR points with 0.01 accuracy in x, y, and
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z and prints out control information.
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$ lasmerge -i las_file_list.txt -o out.las -scale_xyz 0.01 0.01 0.001
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same but with a different accuracy for z.
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C:\lastools\bin>lasmerge -h
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lasmerge -i lasfiles.txt -o out.las
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lasmerge -i file1.las -i file2.las -i file3.las -o out.las
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lasmerge -i file1.las -i file2.las -olas > out.las
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lasmerge -i lasfiles.txt -scale 0.01 -verbose -o out.las