On Oct 5, 2010, at 9:47 AM, Allan Adair wrote: > I ran across something when defining and retrieving spatial/vertical > reference information using las2las2 and lasinfo. I grabbed the source > yesterday and did a build. Here is an example of using the las2las2 utility: > > las2las2.exe --input LID35094D7NEC.las --a_srs PROJCS["NAD83 / UTM zone > 15N",GEOGCS["NAD83",DATUM["North_American_Datum_1983",SPHEROID["GRS > 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","6269"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4269"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-93],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],AUTHORITY["EPSG","26915"],AXIS["Easting",EAST],AXIS["Northing",NORTH]] > --a_vertcs 5703 "North American Vertical Datum of 1988 (NAVD88)" 5103 9001 > > This creates an "output.las" by default with the new spatial/vertical > reference information. Here is part of the output when using the lasinfo to > retrieve the spatial/vertical reference information:
> VerticalCitationGeoKey (Ascii,47): "North American Vertical Datum of > 1988 > (NAVD88╠" > > Ignoring the error messages at the beginning of the output, I see that there > is a symbol at the end of the "VerticalCitationGeoKey". I get the same issue > if I alter the text, the last character is not visible and is replaced with > the same unwanted piece of data. Outside of aesthetics, will this affect how > the vertical reference information is interpreted by software that supports > these tags? It would seem this is a bug in las2las2 or somewhere in the stack of software that sets the vertical geotiff keys in the file. I see the same bug when I run on OS X just now as well. Thank you for the report. Howard_______________________________________________ Liblas-devel mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/liblas-devel
