[postgis-users] transformation discrepancy with postgis v. cs2cs

[Bryan Keith]

>>
>> Something is definitely strange with the PROJ.4 installation on that
>> one system. If I had to guess, you compiled PROJ.4 yourself, but
>> didn't unzip the gridshift files in the nad folder before ./configure
>> ? It should be apparent that the grid shift files are installed with
>> the make install command.
>
> Mike,
>
> Thanks for the reply.
>
> I certainly don't think I compiled anything myself.  I'm on Ubuntu/Debian
> and installed postgres, postgis, gdal, and the gdal/ogr Python bindings
> with apt-get.  I don't know that I ever explicitly installed proj.4, but I
> figured it was installed because I have the cs2cs executable.  I've
> installed some other GIS-type stuff like Quantum.
>
>>
>> Try reinstalling the PROJ.4 library with the gridshift files intact,
>> and it should affect both PostGIS and cs2cs (since they use the same
>> system library).
>
> Should I just try:
>
> sudo apt-get install proj

I tried this and got the message:

proj is already the newest version.
proj set to manually installed.

Manually installed?  I wonder why that is.

Where is it installed?  I search for a nad directory and only found this one:

/usr/lib/grass/etc/nad

I didn't try doing the coordinate conversion in GRASS since I don't know
how to use GRASS, but the nad directory seems to have the uncompressed
grid shift files:

-rw-r--r-- 1 root root 1053896 2008-05-29 14:33 alaska
-rw-r--r-- 1 root root  264392 2008-05-29 14:33 conus
-rw-r--r-- 1 root root    8840 2008-05-29 14:33 FL
-rw-r--r-- 1 root root  451976 2008-05-29 14:33 hawaii
-rw-r--r-- 1 root root    3528 2008-05-29 14:33 MD
-rw-r--r-- 1 root root 1113184 2008-05-29 14:33 ntv1_can.dat
-rw-r--r-- 1 root root  318464 2008-05-29 14:33 nzgd2kgrid0005.gsb
-rw-r--r-- 1 root root   26696 2008-05-29 14:33 prvi
-rw-r--r-- 1 root root   59176 2008-05-29 14:33 stgeorge
-rw-r--r-- 1 root root   26696 2008-05-29 14:33 stlrnc
-rw-r--r-- 1 root root    7016 2008-05-29 14:33 stpaul
-rw-r--r-- 1 root root    4392 2008-05-29 14:33 TN
-rw-r--r-- 1 root root    6728 2008-05-29 14:33 WI
-rw-r--r-- 1 root root   11080 2008-05-29 14:33 WO

I appreciate any suggestions.  I don't really know what I'm doing here.

Bryan

>
> ?
>
> Bryan
>
>>
>> -Mike
>> _______________________________________________
>> postgis-users mailing list
>> postgis-users at postgis.refractions.net
>> http://postgis.refractions.net/mailman/listinfo/postgis-users
>>
>
>