combined prj file error

[Phogi]

Hi,

I'm trying to project the coordinates with adding the geoid 12B file, however, when I combined the prj file PhotoScan gives me error message "vertical datum missing". Can anyone help me to find what's wrong in this prj definition?

The prj file is attached.

Thanks very much!

[Alexey Pasumansky]

Hello Phogi,

Have you downloaded corresponding GeoTIFF and put it to geoids folder?
http://www.agisoft.com/downloads/geoids/

[Phogi]

Hi Yes I 've put the file in. So Nad83 can be converted to NAVD, but if with PROJ then didn't work.

[Alexey Pasumansky]

Hello Phogi,

It seems that there are some issues with the Authority tags, also TOWGS84 section seems strange.

Can you try the following PRJ:

Code: [Select]

COMPD_CS["Texas + NAVD88 height",
PROJCS["NAD83(2011) / Texas North Central (ftUS)",
GEOGCS["NAD83(2011)",
DATUM["NAD83 (National Spatial Reference System 2011)",
SPHEROID["GRS 1980",6378137,298.257222101, AUTHORITY["EPSG","7019"]],
AUTHORITY["EPSG","1116"]],
PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9102"]],
AUTHORITY["EPSG","6318"]],
PROJECTION["Lambert_Conformal_Conic_2SP",AUTHORITY["EPSG","9802"]],
PARAMETER["latitude_of_origin",31.6666666666667],
PARAMETER["central_meridian",-98.5],
PARAMETER["standard_parallel_1",33.9666666666667],
PARAMETER["standard_parallel_2",32.1333333333333],
PARAMETER["false_easting",1968500],
PARAMETER["false_northing",6561666.667],
UNIT["US survey foot",0.3048006096012192,AUTHORITY["EPSG","9003"]],
AUTHORITY["EPSG","6584"]],
VERT_CS["North American Vertical Datum 1988",
VERT_DATUM["North American Vertical Datum 1988",2005,AUTHORITY["EPSG","5103"]],
UNIT["US survey foot",0.3048006096012192,AUTHORITY["EPSG","9003"]]]]