[GRASSLIST:185] Re: Question about re-projecting points imported from Postgres

[Thomas Adams]

David,

Maybe you don't understand. The Postgres table is for points and has the 
lat-long location; using v.in.db one is required to identify the x,y 
location. The additional attributes are read as well, of course. I can 
successfully import the Postgres table into GRASS into my lat-long 
location. If I then try to re-project the points into a LCC projection 
(from the LCC location), the v.proj does not seem to work. Is this what 
you previously understood I was tying to do or do now?

Who would know whether or not this can be done?

Thanks for you r responses…

Tom

David Finlayson wrote:
> Ah, I understand now. I'm afraid I can't help you with this. I've only
> used databases to hold attribute information not the topology also. I
> haven't tried PostGIS yet.
>
> David
>
> On 3/15/06, Thomas Adams <Thomas.Adams at noaa.gov> wrote:
>   
>> List:
>>
>> I have a Lat-Long location into which I have successfully imported
>> points from Postgres (a further question about this further below). What
>> I want to do is to re-project the points into a Lambert Conic Conformal
>> location using v.proj. When I try to do this, it does not work — it
>> seems as though GRASS does not know how to do this. I have been able to
>> do this successfully with points imported using v.in.ascii. It seems I
>> am missing something, either conceptually or procedurally…
>>
>> The further question about using v.in.db, the 'key' parameter in the
>> documentation claims this is a string, which makes since to me, but when
>> v.in.db is run, GRASS complains that an integer is needed. I'm guessing
>> the integer that's supplied is the column/field number (beginning with
>> '1'); if true, this seems to be inconsistent by what the 'x', 'y', and
>> 'z' fields require — just a thought.
>>
>> Tom
>>
>> --
>> Thomas E Adams
>> National Weather Service
>> Ohio River Forecast Center
>> 1901 South State Route 134
>> Wilmington, OH 45177
>>
>> EMAIL:  thomas.adams at noaa.gov
>>
>> VOICE:  937-383-0528
>> FAX:    937-383-0033
>>
>>
>>     
>
>
> --
> David Finlayson
>   


-- 
Thomas E Adams
National Weather Service
Ohio River Forecast Center
1901 South State Route 134
Wilmington, OH 45177

EMAIL:	thomas.adams at noaa.gov

VOICE:	937-383-0528
FAX:	937-383-0033