[postgis-users] Enter details into Geom column

[Ricardo Bayley]

Hi Ben

Try instead of  "public.CLEANEDCAMDENGPS" --> public."CLEANEDCAMDENGPS"

notice the "".

I strongly suggest to lowercase all your table and column names.


Hope this helped.

Ricardo




2011/5/30 Ben Madin <lists at remoteinformation.com.au>

> James,
>
> The error message has two possibilities:
>
> ERROR: relation "public.CLEANEDCAMDENGPS" does not exist
>
> either their is no table called 'CLEANEDCAMDENGPS' (and I think you've
> probably got the idea about the issues with case), but it is also possible
> that the schema is not 'public', depending on your access to a database. If
> it is on your local computer, and you have no idea what I'm talking about,
> then it probably is public. If you are using a shared installation, it may
> not be public.
>
> if you are using psql (the command line), and try a command like \dt, you
> will see a list of the 'relations' which do exist - something like
>
>                List of relations
>    Schema   |       Name       | Type  | Owner
> ------------+------------------+-------+-------
>  backoffice | access           | table | ben
>  backoffice | accesslevel      | table | ben
>  backoffice | categories       | table | ben
>
> if your table is not in this list, (it's specified as backoffice.access for
> instance) then it may not exist, or you need to look up search_path.
>
> cheers
>
> Ben
>
>
>
> On 31/05/2011, at 2:35 AM, James Smith wrote:
>
> Dear Brent,
>
> Thank you for your reply and simple explanation, it's much appreciated.
> Unfortunately, it doesn't seem to work. When I try to create the Geom
> column, I get this error:
>
> -----
> ERROR: function st_creategeometrycolumn(unknown, unknown, unknown, integer,
> unknown, integer) does not exist
> SQL state: 42883
> Hint: No function matches the given name and argument types. You might need
> to add explicit type casts.
> Character: 8
> -----
>
> So I browsed the PostGIS functions, and thought that I should perhaps use
> the function 'AddGeometryColumn' instead, so changed the code to below:
>
> ----
> select AddGeometryColumn('public',
> 'CLEANEDCAMDENGPS','geom',4326,'POINT',2);
> ----
>
> However this returns an error of the below:
>
> ----
> ERROR: relation "public.CLEANEDCAMDENGPS" does not exist
> ----
>
> I should perhaps say at this point, that the table called CLEANEDCAMDENGPS
> is within a database called CAMDENGPS. I played around with trying to put
> the database name into the statement too, but with no luck.
>
> Any thoughts?
>
> Thanks again, and yes, I'll take onboard your point about captials and
> table names from this point forwards.
>
> Cheers
>
> James
>
>
>
> On 29 May 2011 23:44, <pcreso at pcreso.com> wrote:
>
>>
>> Hi James,
>>
>> I suggest you avoid upper case letters in table & column names if you can.
>> It makes a few things easier....
>>
>> The syntax in both SQL statements is wrong. Try:
>>
>> select
>> ST_CreateGeometryColumn('public','CLEANEDCAMDENGPS','geom',4326,'POINT',2);
>>
>> the fields are (in order):
>>
>> schema where table can be found ('public')
>> the table name where you want the new column ('CLEANEDCAMDENGPS')
>> the name of the geometry column to create ('geom')
>> the SRID of the geometry column to create (4326)
>> the geometry type  ('POINT')
>> the number of dimensions (2 - x & y)
>>
>> All string values need to be quoted.
>>
>> To populate this column try:
>>
>> update "CLEANEDCAMDENGPS"
>> set geom=setsrid(makepoint("LONGITUDE","LATITUDE"),4326);
>>
>> So, create a point geometry from the two numeric columns (makepoint),
>> force the SRID of this geometry to 4326 (setsrid), & write this value to
>> your new column (update table set column =).
>>
>>
>> HTH,
>>
>>   Brent Wood
>>
>>
>>
>> James Smith wrote:
>> > Dear all,
>> >
>> > Would appreciate some help. I have created an existing database (with
>> > PostGIS extension) and it has a table called CLEANEDCAMDENGPS which
>> > is populated with approx 600,000 rows. There are 20 or so columns in the
>> > table, two of which are Latitude and Longitude (WGS84). I would now
>> > like to create a Geom column with points in, the values of which
>> > should be taken from the latitude and longitude column. Could someone
>> > provide me with sample code as to how to do this please? I had a go
>> > with the below, but don't really know what I'm doing... neither of the
>> > statements work...
>> >
>> > --CREATE THE COLUMN--
>> > SELECT AddGeometryColumn('CAMDENGPS', 'GPS_POINTS', 'geom', 4326,
>> 'POINT', 2)
>> >
>> > --POPULATE THE COLUMN--
>> > INSERT INTO CLEANEDCAMDENGPS (GPS_POINTS)
>> > VALUES ( ST_GEOMFROMTEXT('POINT((SELECT LONGITUDE FROM
>> > CLEANEDCAMDENGPS) (SELECT LATITUDE FROM CLEANEDCAMDENGPS))', 4326,
>> > 'Point'));
>> >
>> > Thank you
>> >
>> > James
>> > _______________________________________________
>> > postgis-users mailing list
>> > postgis-users at postgis.refractions.net
>> > http://postgis.refractions.net/mailman/listinfo/postgis-users
>> >
>>
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