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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<pre><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>I have a table of parcels and the projection is epsg 102728 (NAD_1983_StatePlane_Pennsylvania_North_FIPS_3701_Feet). I am trying to select certain parcels that are within 1 mile of the host parcel. I select the centriod of the host parcels as follows:<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>SELECT ST_AsText(ST_Centroid(the_geom)) FROM public.pa42089_parcels WHERE rpd_property_id = 123456;<o:p></o:p></span></font></pre><pre><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>And with that centroid ( POINT(2611084.52017283
293875.803135596 ) I am doing the following:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>SELECT gid, pin, ST_AsGML(the_geom) FROM
public.pa42089_parcels WHERE
ST_DWithin(the_geom,ST_GeomFromText('POINT(2611084.52017283
293875.803135596)'),5280.0) AND property_type ='Building' AND sale_date >=
'05/05/2001' AND ( acreage >= 0.75 AND acreage <= 1.25 )<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>My results are not as expected, I am suspect of the centroid
point as used in the ST_DWithing function (the wrong srid?) … the mapped
results (in openlayers) from this query show a concentration parcels in another
area (not around the host parcel).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Any help would be greatly appreciated..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Vince<o:p></o:p></span></font></p>
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