Dear All, I have downloaded the new release of "libLAS (libLAS 1.6.0b2)" from "OSGeo4W" and run the vertical datum conversion command as follow:
las2las gal_000052.las --a_srs EPSG:32615 --t_srs EPSG:32615+5703 which basically assign (wgs84, UTM15) coordinate system to the original file ( --a_srs EPSG:32615 ), then transform the vertical datum to NAVD 88 ( --t_srs EPSG:32615+5703). It worked great, thanks for the great effort. I have also compared the result with the results from V-datum and they match to the second decimal place very nicely.(sample calcs. included in this e-mail). Thank you very much, With best regards, Ibraheem Below some sample lines from the original file, and the results from liblas, and V-datum Original file (WGS 84 UTM15, ellipsoidal height): 293999.95 3219406.51 -25.55 293999.9 3219406.56 -25.53 293999.77 3219406.67 -25.53 293999.72 3219406.71 -25.53 293999.71 3219406.72 -25.51 Liblas Conversion Result (WGS 84 UTM15, NAVD 88):: 293999.95 3219406.51 0.94 293999.9 3219406.56 0.96 293999.77 3219406.67 0.96 293999.72 3219406.71 0.96 293999.71 3219406.72 0.98 V-Datum Conversion Result (WGS 84 UTM15, NAVD 88): 293999.95 3219406.51 0.9364 293999.9 3219406.56 0.9564 293999.77 3219406.67 0.9564 293999.72 3219406.71 0.9564 293999.71 3219406.72 0.9764
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