Dane,
Dane,
Oops sorry about that . I just posted a revised version. Can you
try that
out? Thanks.
Also can you send me a sample of your data off list. I think the
issue was
I was experimenting with array_append vs. st_geom_accum and I had
gotten the
error you described below, but then was unable to replicate it again.
It could be the detoasting affect of st_geom_accum that Mark had
described
was the difference between the two.
Thanks,
Regina
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Dane
Springmeyer
Sent: Sunday, October 05, 2008 1:47 AM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] Cascaded Union Aggregate function
Hi Regina,
Thank you so much for the wiki posting. I've been using your code
from your
august 12th email with great success, if not joy. What an amazing
speed
improvement, especially for such a critical function. This was your
exact
email of code I have working:
http://postgis.refractions.net/pipermail/postgis-devel/2008-August/003412.ht
ml
I've just downloaded the new code off the wiki, but I'm getting an
error of
'Unknown Geometry Type: 0'. I'll paste the whole error below in case
you
have an idea what might be going on. I'm running mac 10.5 with these
details:
postgis_version
---------------------------------------
1.3 USE_GEOS=1 USE_PROJ=1 USE_STATS=1
(1 row)
--------------------------------------------------------------
PostgreSQL 8.3.3 on i386-apple-darwin9.4.0, compiled by GCC
Cheers,
Dane
-- full error:
test=# select upgis_cascadeunion(the_geom) from npsa group by
wholedrain;
ERROR: Unknown geometry type: 0
CONTEXT: SQL function "upgis_dump_collect_garray" statement 1
SQL statement "SELECT
upgis_dump_collect_garray( array_append(ARRAY(SELECT $1 [s] As geom
FROM
generate_series(1, $2 ) As s WHERE NOT (s = ANY( $3 )) ),
st_unite_garray(ARRAY(SELECT $1 [s] As geom FROM generate_series(1,
$2 ) As s WHERE s = ANY( $3 ) ) ) ) )"
PL/pgSQL function "st_collect_unite_garray" line 29 at assignment SQL
statement "SELECT upgis_unitecascade_garray(ARRAY(SELECT
st_collect_unite_garray( $1 [i:least(i + $2 - 1, $3 )]) As geom FROM
generate_series(1, $3 , $2 ) As i), $4 + 1, $5 , false)"
PL/pgSQL function "upgis_unitecascade_garray" line 48 at assignment
SQL statement "SELECT
upgis_dump_collect_garray( array_append(ARRAY(SELECT $1 [ $2 [s]]
As geom
FROM generate_series(1, array_upper( $2 ,1)) As s ),
upgis_unitecascade_garray(ARRAY(SELECT $1 [s] As geom FROM
generate_series(1, $3 ) As s WHERE NOT (s = ANY( $2 )) ), $4 + 1,
$5 , true) ) )"
PL/pgSQL function "upgis_unitecascade_garray" line 33 at assignment
SQL
function "upgis_unitecascade_garray_sort" statement 1
On Oct 4, 2008, at 4:53 PM, Paragon Corporation wrote:
Oops sorry about that.
Just realized I had ugly spaces in the link. I've changed it. Use
this one
http://postgis.refractions.net/support/wiki/index.php?
upgis_cascadeuni
on
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Paragon Corporation
Sent: Saturday, October 04, 2008 7:44 PM
To: 'PostGIS Users Discussion'
Subject: [postgis-users] Cascaded Union Aggregate function
For those people who have unions to do that are slow, feel free to
try
out this aggregate union function.
I haven't tested it enough for it to make it into 1.3.4, but have
included a link to the source code in the wiki. It should work just
fine on PostGIS versions 1.2.2 and above.
http://postgis.refractions.net/support/wiki/index.php?PL%2FPGSQL
%20Pse
udo%20 Cascade%20Union%20Aggregate%20Function
Let me know if you run into any problems with it. It has worked well
for the samples I have used it on.
Thanks,
Regina
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
_______________________________________________
postgis-users mailing list
postgis-users@postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users
