Thanks Even!

Matt



________________________________
From: Even Rouault <[email protected]>
Sent: Wednesday, January 31, 2024 12:54
To: Matt.Wilkie <[email protected]>; [email protected] 
<[email protected]>
Subject: [EXT] Re: [gdal-dev] Unknown projection


Matt,

surprisingly or not, the GTiff driver doesn't try to get the SRS from a .prj 
side car file.

So just do

gdal_edit.py 047_0001.tif -a_srs "$(cat 047_0001.prj)"

Even

Le 31/01/2024 à 20:22, Matt.Wilkie via gdal-dev a écrit :

Hello gdal,



I have a collection of aerial photos for which neither gdal nor arc pro 
recognize the projection. To my eye the .prj files look ok. Attached txt is 
gdalinfo v3.8.0 report along with the .prj. I manually formatted the below for 
readability:



PROJCS["UTM_07N",

    GEOGCS["NAD83-CSRS Epoch 2006 (7 Param+Vel)",

        DATUM["NAD83-CSRS Epoch 2006 (7 Param+Vel)",

            SPHEROID["GRS 80", 6378137,298.2572221010002],

            TOWGS84[1.0026,-1.9083,-0.5165, 1.288877171229702e-07, 
8.998141921392988e-09, 5.376098909823645e-08, -1.18e-09]],

        PRIMEM["Greenwich",0],

        UNIT["degree",0.0174532925199433]

        ],

    PROJECTION["Transverse_Mercator"],

    PARAMETER["latitude_of_origin",0],

    PARAMETER["central_meridian",-141],

    PARAMETER["scale_factor",0.9996],

    PARAMETER["false_easting",500000],

    PARAMETER["false_northing",0],

    UNIT["metres",1]

    ]



Thanks!

Matt Wilkie

Geomatics Developer & Administrator

Environment | Technology, Innovation and Mapping

T 867-667-8133 | Yukon.ca<http://yukon.ca/>

Hours: 08:30-16:30, Mon-Wed: Office, Thu: Remote, Fri: Away.





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