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After having to answer this yet again I am finally reduced to adding the age old question: Why does pgAdmin show that my geometries are blank. Also change the FAQ to a pretty anchor so its easily referenceable and permanent.

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git-svn-id: http://svn.osgeo.org/postgis/trunk@6748 b70326c6-7e19-0410-871a-916f4a2858ee
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Regina Obe 2011-01-28 12:11:15 +00:00
parent 89f0060ff2
commit 478149ce5b
1 changed files with 20 additions and 2 deletions
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22
doc/faq.xml
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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<chapter> <chapter id="PostGIS_FAQ">
<title>Frequently Asked Questions</title> <title>PostGIS Frequently Asked Questions</title>
<qandaset> <qandaset>
<qandaentry> <qandaentry>
@ -25,6 +25,24 @@
</answer> </answer>
</qandaentry> </qandaentry>
<qandaentry>
<question>
<para>I tried to use PgAdmin to view my geometry column and it is blank, what gives?</para>
</question>
<answer>
<para>PgAdmin doesn't show anything for large geometries. The best ways to verify you do have day in your geometry columns are?</para>
<programlisting>-- this should return no records if all your geom fields are filled in
SELECT somefield FROM mytable WHERE geom IS NULL;</programlisting>
<programlisting>-- To tell just how large your geometry is do a query of the form
--which will tell you the most number of points you have in any of your geometry columns
SELECT MAX(ST_NPoints(geom)) FROM sometable;</programlisting>
</answer>
</qandaentry>
<qandaentry> <qandaentry>
<question> <question>
<para>What kind of geometric objects can I store?</para> <para>What kind of geometric objects can I store?</para>