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List: postgis-users
Subject: Re: [postgis-users] help with a SQL Command solved
From: <paul.malm () lfv ! se>
Date: 2020-02-13 14:22:33
Message-ID: 785199B14156764C8EB14EF96CEDC44EEA1C50 () xw-exch03 ! lfv ! se
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Sorry I found what was wrong;
Drop table if exists cutted;
CREATE TABLE "cutted" as WITH
blade AS (
SELECT ST_MakeLine(ST_SetSRID(ST_MakePoint(180, -90),4326),ST_SetSRID(ST=
_MakePoint(180.000, 90), 4326)) AS geom)
SELECT a.*, (ST_Dump(ST_Split(a.the_geom, b.geom))).geom FROM shifted =
AS a, blade AS b WHERE ST_Intersects(a.the_geom, b.geom)
UNION ALL
SELECT *, the_geom FROM shifted AS a WHERE NOT EXISTS (
SELECT 1 FROM blade AS b WHERE ST_Intersects(a.the_geom, b.geom)
);
ALTER TABLE cutted DROP COLUMN IF EXISTS the_geom;
ALTER TABLE cutted RENAME COLUMN geom TO the_geom;
Fr=E5n: postgis-users [mailto:postgis-users-bounces@lists.osgeo.org] F=F6r =
Malm, Paul (Operations AIM)
Skickat: den 13 februari 2020 14:56
Till: postgis-users@lists.osgeo.org
=C4mne: [postgis-users] help with a SQL Command
Hi list!
I have a problem with a sql command, I would be grateful if someone please =
could tell me what I'm doing wrong.
I have a polygon layer where some polygons exceeds the 180/-180 border.
I would like to cut the polygons with a line from 180,90 to 180,-90.
I've got this far:
Drop table if exists cutted;
CREATE TABLE "cutted" as WITH
blade AS (
SELECT ST_MakeLine(ST_SetSRID(ST_MakePoint(180, -90),4326),ST_SetSRID(ST=
_MakePoint(180.000, 90), 4326)) AS geom)
SELECT a.*, (ST_Dump(ST_Split(a.the_geom, b.geom))).geom FROM shifted =
AS a, blade AS b
UNION ALL
SELECT *, the_geom FROM shifted AS a WHERE NOT EXISTS (
SELECT 1 FROM blade AS b WHERE ST_Intersects(a.the_geom, b.geom)
);
ALTER TABLE cutted DROP COLUMN IF EXISTS the_geom;
ALTER TABLE cutted RENAME COLUMN geom TO the_geom;
It cuts the exceeding polygons nice but the uncut objects are duplicated in=
the result layer (cutted).
Thanks,
[2_LFV_engelsk_96]
Paul Malm
Operations AIM
Direct +46 (0)8 797 70 23 Mobile: +46 (0)708 601115
paul.malm@lfv.se
Mail & Visit: L=F6jtnantsgatan 25, 115 50 Stockholm, Sweden
Unit phone: +46 (0)8 797 70 20
www.lfv.se<http://www.lfv.se/>
Please consider the enviroment before printing this e-mail message.
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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Sorry I found what was \
wrong;<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"><o:p> </o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">Drop table if exists cutted; <o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">CREATE TABLE "cutted" as WITH \
<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"> blade AS ( <o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US"> SELECT \
ST_MakeLine(ST_SetSRID(ST_MakePoint(180, -90),4326),ST_SetSRID(ST_MakePoint(180.000, \
90), 4326)) AS geom)<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">SELECT a.*, (ST_Dump(ST_Split(a.the_geom, b.geom))).geom \
FROM shifted AS a, blade AS b </span><span \
lang="EN-US" style="font-size:10.0pt;font-family:Consolas;color:#2A00FF;background:#E8F2FE;mso-fareast-language:SV">WHERE \
ST_Intersects(a.the_geom, b.geom)</span><span lang="EN-US"><o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">UNION ALL <o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">SELECT *, the_geom FROM shifted AS a WHERE \
NOT EXISTS ( <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> SELECT \
1 FROM blade AS b WHERE ST_Intersects(a.the_geom, \
b.geom)<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">);<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">ALTER \
TABLE cutted DROP COLUMN IF EXISTS the_geom;<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">ALTER TABLE cutted RENAME COLUMN geom TO \
the_geom;<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"><o:p> </o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"><o:p> </o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"><o:p> </o:p></span></p> <div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:SV">Från:</span></b><span \
lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:SV"> \
postgis-users [mailto:postgis-users-bounces@lists.osgeo.org] <b>För </b>Malm, Paul \
(Operations AIM)<br> <b>Skickat:</b> den 13 februari 2020 14:56<br>
<b>Till:</b> postgis-users@lists.osgeo.org<br>
<b>Ämne:</b> [postgis-users] help with a SQL Command<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal">Hi list!<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have a problem with a sql command, I would \
be grateful if someone please could tell me what I’m doing \
wrong.<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">I have a polygon \
layer where some polygons exceeds the 180/-180 border.<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">I would like to cut the polygons with a line \
from 180,90 to 180,-90.<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">I’ve got this far:<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">Drop table if exists cutted; \
<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">CREATE TABLE \
"cutted" as WITH <o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US"> blade AS ( <o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US"> SELECT \
ST_MakeLine(ST_SetSRID(ST_MakePoint(180, -90),4326),ST_SetSRID(ST_MakePoint(180.000, \
90), 4326)) AS geom)<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">SELECT a.*, (ST_Dump(ST_Split(a.the_geom, b.geom))).geom \
FROM shifted AS a, blade AS b \
<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">UNION ALL \
<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">SELECT *, the_geom \
FROM shifted AS a WHERE NOT EXISTS ( <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> SELECT \
1 FROM blade AS b WHERE ST_Intersects(a.the_geom, \
b.geom)<o:p></o:p></span></p> <p class="MsoNormal"><span \
lang="EN-US">);<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US">ALTER \
TABLE cutted DROP COLUMN IF EXISTS the_geom;<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">ALTER TABLE cutted RENAME COLUMN geom TO \
the_geom;<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" \
style="font-size:9.0pt;mso-fareast-language:SV"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US" \
style="font-size:9.0pt;mso-fareast-language:SV"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">It cuts the exceeding polygons nice but the \
uncut objects are duplicated in the result layer (cutted).<o:p></o:p></span></p> <p \
class="MsoNormal"><span lang="EN-US">Thanks,</span><span lang="EN-US" \
style="font-size:9.0pt;mso-fareast-language:SV"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" \
style="font-size:9.0pt;mso-fareast-language:SV"> </span><span \
style="font-size:9.0pt;mso-fareast-language:SV"><img width="132" height="107" \
id="Bild_x0020_1" src="cid:image001.jpg@01D5E281.690A7810" \
alt="2_LFV_engelsk_96"><o:p></o:p></span></p> <table class="MsoNormalTable" \
border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse"> <tbody>
<tr style="height:36.85pt">
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lang="EN-US" style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"><o:p> </o:p></span></p>
<p class="MsoNormal" \
style="margin-top:2.0pt;line-height:10.0pt;mso-line-height-rule:exactly"> <b><span \
lang="EN-US" style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"> \
Paul Malm</span></b><span lang="EN-US" \
style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"><br> <br>
Operations AIM</span><span lang="EN-US" \
style="font-size:9.0pt;color:#333333"><o:p></o:p></span></p> </td>
</tr>
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2.25pt;height:24.1pt"> <p class="MsoNormal" \
style="margin-bottom:12.0pt;line-height:9.0pt;mso-line-height-rule:exactly"> <span \
lang="EN-US" style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"> \
Direct +46 (0)8 797 70 23 Mobile: +46 (0)708 601115<br> \
paul.malm@lfv.se <o:p></o:p></span></p> <p class="MsoNormal" \
style="line-height:9.0pt;mso-line-height-rule:exactly"><span lang="EN-US" \
style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"> </span><span \
style="font-size:9.0pt;color:#333333;mso-fareast-language:SV">Mail & Visit: \
Löjtnantsgatan 25, 115 50 Stockholm, Sweden</span><span \
style="font-size:9.0pt;color:#333333"><o:p></o:p></span></p> </td>
</tr>
<tr>
<td width="420" valign="top" style="width:315.0pt;padding:0cm 0cm 0cm 2.25pt">
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lang="EN-US" style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"> \
Unit phone: +46 (0)8 797 70 20 <br>
</span><span \
style="font-size:9.0pt;color:#333333;mso-fareast-language:SV"><a \
href="http://www.lfv.se/"><span lang="EN-US">www.lfv.se</span></a></span><span \
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Please consider the enviroment before printing this e-mail message.</span><span \
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