Hi all.
I need your help! I have read every post about Spatial in Solr because I
need to check if a point (latitude,longitude) is inside a Polygon.
/**************/
/* 1. library */
/**************/
(1) I use "jts-1.13.jar" and "spatial4j-0.4.1.jar"
(I think they are the latest version)
/*****************/
/* 2. schema.xml */
/*****************/
<fieldType name="locationSolr"
class="solr.SpatialRecursivePrefixTreeFieldType"
spatialContextFactory="com.spatial4j.core.context.jts.JtsSpatialContextFacto
ry" distErrPct="0.025" maxDistErr="0.000009" units="degrees" />
(I omit geo="true" because it is the default)
...
<field name="LOCATION" type="locationSolr" indexed="true" stored="true"/>
(Here I dont know what means if I add multiValued="true")
/*********************/
/* Document contents */
/*********************/
I have tried with 3 different content for my documents (lat-lon refers to
Madrid, Spain):
a) As it is WKT format, I tried "longitude latitude" (x y)
<doc>
<arr name="LOCATION">
<str>-3.69278 40.442179</str>
</arr>
</doc>
b) As it is WKT format, I tried "POINT(longitude latitude) (x y)
<doc>
<arr name="LOCATION">
<str>POINT(-3.69278 40.442179)</str>
</arr>
</doc>
and
c) I tried no WKT format by adding a comma and using "longitude,latitude"
<doc>
<arr name="LOCATION">
<str>40.442179,-3.69278</str>
</arr>
</doc>
d) I tried no WKT format by adding a comma and using "latitude,longitude"
<doc>
<arr name="LOCATION">
<str>-3.69278,40.442179</str>
</arr>
</doc>
/*****************/
/* My solr query */
/*****************/
a)
_Description: This POLYGON (in WKT format, so "longitude latitude") is a
triangle that cover Madrid at all, so my point would be inside them.
_Result: Query return 0 documents (which is wrong).
http://localhost:8983/solr/pisos22/select?q=*%3A*&;
fl=LOCATION&
wt=xml&
indent=true&
fq=LOCATION:"IsWithin(POLYGON((
-3.732605 40.531415,
-3.856201 40.336993,
-3.493652 40.332806,
-3.732605 40.531415
))) distErrPct=0"
b)
_Descripcion: This POLYGON (in WKT format, so "longitude latitude") is a
rectangle out of Madrid, so my point would not be inside them.
_Result: Query return 0 documents (which is correct).
http://localhost:8983/solr/pisos22/select?q=*%3A*&;
fl=LOCATION&
wt=xml&
indent=true&
fq=LOCATION:"IsWithin(POLYGON((
-4.0594 40.8708,
-4.0621 40.7211 ,
-3.8095 40.7127,
-3.8232 40.8687,
-4.0594 40.8708
))) distErrPct=0"
***I also tried modifying the order of lat/lon but I am not able to find out
the solution to make it work.
