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Hallo<br>
<br>
<br>
<blockquote
cite="mid:OFA9107CBC.B0E4947D-ON852579A6.00699B08-852579A6.006A2EF1@isn.rtss.qc.ca"
type="cite"><font face="sans-serif" size="2">Does A distance of 0
mean that the polygons
touch each other or it means that their bounding box touch each
other?</font>
<br>
</blockquote>
From ST_Distance distance 0 menas that they are touching or
overlapping each other<br>
<br>
<blockquote
cite="mid:OFA9107CBC.B0E4947D-ON852579A6.00699B08-852579A6.006A2EF1@isn.rtss.qc.ca"
type="cite"><font face="sans-serif" size="2">What does a distance
of 100 mean?. Is
it the shortest distance between the 2 polygons or the distance
between
some random point on the polygon or on the surface?</font>
<br>
<br>
</blockquote>
It is the shortest distance between two polygons. You can use
ST_ShortestLine to find what that two points (first and last point
in the resulting line)<br>
<br>
HTH<br>
Nicklas<br>
<br>
<br>
<br>
<blockquote
cite="mid:OFA9107CBC.B0E4947D-ON852579A6.00699B08-852579A6.006A2EF1@isn.rtss.qc.ca"
type="cite"><font face="sans-serif" size="2">thanks</font>
<br>
<font face="sans-serif" size="2">Steve</font>
<br>
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