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updating README
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Martin Isenburg committed Mar 4, 2020
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Showing 1 changed file with 18 additions and 11 deletions.
29 changes: 18 additions & 11 deletions bin/las2las_README.txt
Original file line number Diff line number Diff line change
@@ -200,32 +200,38 @@ other commandline arguments are
-subseq 20 100 : extract a subsequence of 100 points starting from point 20
-set_point_type 0 : force point type to be 0
-set_point_size 26 : force point size to be 26
-set_global_encoding_gps_bit 1 : sets bit in global encoding field specifying Adjusted GPS Standard time stamps
-set_version 1.2 : set LAS version number to 1.2
-set_version_major 1 : set LAS major version number to 1
-set_version_minor 2 : set LAS minor version number to 2
-set_lastiling_buffer_flag 0 : sets buffer flag in LAStiling VLR (if it exists) to zero
-set_attribute_scale 0 0.1 : sets the scale of the *first* attribute in the extra bytes to 0.1
-set_attribute_offset 1 10.0 : sets the offset of the *second* attribute in the extra bytes to 10.0
-set_classification 0 : sets all classifications fields to zero
-set_user_data 0 : sets all user_data fields to zero
-set_ogc_wkt : translate GeoTIFF keys into CRS string in OGC WKT format and add it as VLR
-set_ogc_wkt_in_evlr : same as above but adds it as LAS 1.4 EVLR instead. really not recommended!!!
-remove_padding : remove user-defined bytes before and after the header
-remove_all_vlrs : remove all VLRs
-remove_vlr 2 : remove VLR number 2 (couting starts at 0)
-remove_vlr 2 : remove third VLR with index 2 (counting starts at 0)
-remove_vlrs_from_to 0 2 : remove the first three VLRs
-remove_all_evlrs : remove all EVLRs
-remove_evlr 2 : remove EVLR number 2 (couting starts at 0)
-remove_evlr 2 : remove third EVLR with index 2 (counting starts at 0)
-remove_evlrs_from_to 0 2 : remove the first three EVLRs
-remove_tiling_vlr : removes VLR containing tiling information created by lastile
-remove_original_vlr : removes VLR containing original header information created by on-the-fly buffering
-add_attribute 0 "hello" "sample attribute" 1.0 0.0 : adds a new attribute of type 0 (unsigned byte) as "extra bytes"
-unset_attribute_scale 0 : unsets the scale of the *first* attribute in the extra bytes
-unset_attribute_offset 1 : unsets the offset of the *second* attribute in the extra bytes
-move_evlrs_to_vlrs : move all EVLRs with small enough payload to VLR section
-save_vlrs : saves all VLRs to a file called vlrs.vlr so they can be loaded into another file
-load_vlrs : loads all VLRs from a file called vlrs.vlr and adds them to each processed file
-remove_padding : remove user-defined bytes before and after the header
-dont_remove_empty_files : does not remove files that have zero points remaining from disk
-clip_to_bounding_box : kicks out all points not inside the bounding box specified by the LAS header
-week_to_adjusted : converts time stamps from GPS week to Adjusted Standard GPS
-adjusted_to_week : converts time stamps from Adjusted Standard GPS to GPS week
-scale_rgb_up : multiplies all RGB values by 256 (to go from 8 bit to 16 bit numbers)
-scale_rgb_down : divides all RGB values by 256 (to go from 16 bit to 8 bit numbers)
-set_version 1.2 : set LAS version number to 1.2
-set_global_encoding_gps_bit 1 : sets bit in global encoding field specifying Adjusted GPS Standard time stamps
-set_attribute_scale 0 0.1 : sets the scale of the *first* attribute in the extra bytes to 0.1
-set_attribute_offset 1 10.0 : sets the offset of the *second* attribute in the extra bytes to 10.0
-unset_attribute_scale 0 : unsets the scale of the *first* attribute in the extra bytes
-unset_attribute_offset 1 : unsets the offset of the *second* attribute in the extra bytes
-set_lastiling_buffer_flag 0 : sets buffer flag in LAStiling VLR (if it exists) to zero
-dont_remove_empty_files : does not remove files that have zero points remaining from disk
-wgs84 : use datum WGS-84
-grs80 : use datum GRS1980
-wgs72 : use datum WGS-72
@@ -236,6 +242,7 @@ other commandline arguments are
-nad27 : use datum NAD27
-etrs89 : use datum ETRS89
-gda94 : use datum GDA94
-gda2020 : use datum GDA2020
-osgb1936 : use datum OSGB 1936
-utm 12T : input is UTM zone 12T
-epsg 2972 : input is EPSG code 2972 (e.g. Reseau Geodesique Francais Guyane 1995)

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