[Proj] Proj Digest, Vol 80, Issue 5
Eric Miller
EMiller at dfg.ca.gov
Wed Jan 12 15:51:59 PST 2011
Does it work correctly if you use the same input and output datum? That is, just have cs2cs run through one or two projections without a datum shift.
For instance:
C:\proj\bin> cs2cs +proj=latlong +datum=NAD83 +to +proj=utm +zone=10 +datum=NAD83 -r
45d15'33.1 111.5W
1402197.69 5076490.88 0.00
^C
If that works, then I still suspect a problem with the grid files. It could be something as silly as copying the files over FTP in ASCII mode...
>>> On 1/12/2011 at 3:06 PM, "R. Jay Flaming" <jflaming at uw.edu> wrote:
> I think maybe I'm missing something more basic. I tried running it in
> a 32 bit machine, but I'm still getting fails on the first entry. For
> example, if I load this data into a file (JunkDataUTM):
> 553749.32 5255410.43
> 552739.32 5255400.43
> 552749.52 5255410.63
>
> And then run:
> c:\proj\bin>C:/proj/bin/cs2cs.exe +proj=utm +zone=10 +datum=NAD27 +to
> +proj=latlong +datum=NAD83 c:/proj/bin/JunkDataUTM
>
> This is the output:
>
> * * 0.000
> 47d27'14.454"E 42d12'42.477"N 0.000
> 47d27'14.784"E 42d12'42.7"N 0.000
>
> No matter what I put in my first entry (whether from a file or by
> stdin), I get the
> * * 0.000 result.
>
>
> Other weirdness... if I try the examples from the man page
> (http://trac.osgeo.org/proj/wiki/man_cs2cs)
> and enter this command:
> c:\proj\bin>cs2cs +proj=latlong +datum=NAD83 +to +proj=utm +zone=10
> +datum=NAD27 -r
>
> and then first try:
> 45d15'33.1" 111.5W
>
> this is the result:
> * * 0.000
>
> if I repeat the same numbers on a second try:
> 45d15'33.1" 111.5W
>
> the second time I get this result:
> 53329298.26 0.00 0.000
>
>
> Jay
>
>
>
>
> On Wed, Jan 12, 2011 at 9:00 AM, <proj-request at lists.maptools.org> wrote:
>> I'm going to guess that your binary NAD files (conus, etc.) do not match
> your architecture. If your Proj.4 binaries are 64-bit, you need 64-bit NAD
> files. Likewise, if you have 32-bit binaries, you need 32-bit NAD files. You
> can confirm that is the problem by using cs2cs with +towgs84 parameters
> instead of +nadgrids.
>>
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