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Posted to solr-user@lucene.apache.org by Leila Deljkovic <le...@koordinates.com> on 2018/01/16 23:09:23 UTC
Solr 7 spatial search and WKT
Hi all,
I need to index multiple POLYGONS/MULTIPOLYGONS per document; I’m trying to use multiValued RptWithGeometrySpatialField and I’m getting this error:
Exception writing document id leila_test to the index; possible analysis error: DocValuesField "gridcell_rpt" appears more than once in this document (only one value is allowed per field)
This is what I’m indexing:
{
"id": "leila_test",
"gridcell_rpt": ["POLYGON((30 10, 10 20, 20 40, 40 40, 30 10))”, "MULTIPOLYGON(((30 20, 45 40, 10 40, 30 20)), ((15 5, 40 10, 10 20, 5 10, 15 5)))"]
}
This is what’s in my schema.xml:
<field name=“gridcell_rpt” type=“location_rpt” multiValued=“true” />
…
<fieldType name=“location_rpt” class="solr.RptWithGeometrySpatialField”
spatialContextFactory="org.locationtech.spatial4j.context.jts.JtsSpatialContextFactory"
distanceUnits=”kilometers” autoIndex="true”/>
I’m pretty confused on why this isn’t working. I can’t find an example of multiValued RptWithGeometrySpatialField anywhere -_-
Thanks :)
Re: Solr 7 spatial search and WKT
Posted by Leila Deljkovic <le...@koordinates.com>.
Hi Emir
I’ve been following one of the only examples I could find on how to index a POLYGON, which does specify the field as multiValued:
Configuration: schema.xml
<field name=“geo_rpt” type=“location_rpt”
multiValued=“true” />
<fieldType name="location_rpt”
class="solr.RptWithGeometrySpatialField”
spatialContextFactory=
”
spatialContextFactory=
”
”org.locationtech.spatial4j.context.jts.
JtsSpatialContextFactory
JtsSpatialContextFactory"
distanceUnits=”kilometers” autoIndex="true”
distErrPct="0.025” maxDistErr="0.000009” />
distanceUnits=”kilometers” autoIndex="true”
distErrPct="0.025” maxDistErr="0.000009” />
Index a polygon (JavaScript syntax around WKT):
{"id":"1", "geo_rpt":
"POLYGON((30 10, 10 20, 20 40, 40 40, 30 10))”}
Indexing one MULTIPOLYGON works also, but trying to enter them as a list like you would for any other multiValued field does not work. I couldn’t find explicitly that RptWithGeometrySpatialField supports multiValued, but according to the Solr docs, it is derived from SpatialRecursivePrefixTreeFieldType (RPT) which supports multiValued and is “configured just like RPT except that the default distErrPct is 0.15 (higher than 0.025)…”
The reason I’m trying to index multiple shapes per document is that in the index, each “layer” (document) has grid cells associated with it (they help describe the density of features across the layer; more density = smaller grid cells in an area). Indexing the grid cells will allow me to figure out how relevant a result for a search extent on a map might be; a layer could cover an entire country but be dense in major cities, so if I am looking for a major city, I’d want to boost this search result. Hope that makes sense. I’m not sure if flattening into a single shape would work for this purpose.
Thanks :)
> On 17/01/2018, at 10:12 PM, Emir Arnautović <em...@sematext.com> wrote:
>
> Hi Leila,
> I haven’t been using spatial in a while and did not test this, but based on error, it seems that multivalue is not supported for this field type. Can you index a single MULTIPOLYGON? Why do you need to have multiple values? Can you flat your geometry to a single MULTIPOLYGON or MULTIGEOMETRY (if supported)? Can you explain why do you need to have multiValued field?
>
> Thanks,
> Emir
> --
> Monitoring - Log Management - Alerting - Anomaly Detection
> Solr & Elasticsearch Consulting Support Training - http://sematext.com/
>
>
>
>> On 17 Jan 2018, at 00:09, Leila Deljkovic <le...@koordinates.com> wrote:
>>
>> Hi all,
>>
>> I need to index multiple POLYGONS/MULTIPOLYGONS per document; I’m trying to use multiValued RptWithGeometrySpatialField and I’m getting this error:
>>
>> Exception writing document id leila_test to the index; possible analysis error: DocValuesField "gridcell_rpt" appears more than once in this document (only one value is allowed per field)
>>
>> This is what I’m indexing:
>> {
>> "id": "leila_test",
>> "gridcell_rpt": ["POLYGON((30 10, 10 20, 20 40, 40 40, 30 10))”, "MULTIPOLYGON(((30 20, 45 40, 10 40, 30 20)), ((15 5, 40 10, 10 20, 5 10, 15 5)))"]
>> }
>>
>> This is what’s in my schema.xml:
>> <field name=“gridcell_rpt” type=“location_rpt” multiValued=“true” />
>> …
>> <fieldType name=“location_rpt” class="solr.RptWithGeometrySpatialField”
>> spatialContextFactory="org.locationtech.spatial4j.context.jts.JtsSpatialContextFactory"
>> distanceUnits=”kilometers” autoIndex="true”/>
>>
>> I’m pretty confused on why this isn’t working. I can’t find an example of multiValued RptWithGeometrySpatialField anywhere -_-
>>
>> Thanks :)
>
Re: Solr 7 spatial search and WKT
Posted by Emir Arnautović <em...@sematext.com>.
Hi Leila,
I haven’t been using spatial in a while and did not test this, but based on error, it seems that multivalue is not supported for this field type. Can you index a single MULTIPOLYGON? Why do you need to have multiple values? Can you flat your geometry to a single MULTIPOLYGON or MULTIGEOMETRY (if supported)? Can you explain why do you need to have multiValued field?
Thanks,
Emir
--
Monitoring - Log Management - Alerting - Anomaly Detection
Solr & Elasticsearch Consulting Support Training - http://sematext.com/
> On 17 Jan 2018, at 00:09, Leila Deljkovic <le...@koordinates.com> wrote:
>
> Hi all,
>
> I need to index multiple POLYGONS/MULTIPOLYGONS per document; I’m trying to use multiValued RptWithGeometrySpatialField and I’m getting this error:
>
> Exception writing document id leila_test to the index; possible analysis error: DocValuesField "gridcell_rpt" appears more than once in this document (only one value is allowed per field)
>
> This is what I’m indexing:
> {
> "id": "leila_test",
> "gridcell_rpt": ["POLYGON((30 10, 10 20, 20 40, 40 40, 30 10))”, "MULTIPOLYGON(((30 20, 45 40, 10 40, 30 20)), ((15 5, 40 10, 10 20, 5 10, 15 5)))"]
> }
>
> This is what’s in my schema.xml:
> <field name=“gridcell_rpt” type=“location_rpt” multiValued=“true” />
> …
> <fieldType name=“location_rpt” class="solr.RptWithGeometrySpatialField”
> spatialContextFactory="org.locationtech.spatial4j.context.jts.JtsSpatialContextFactory"
> distanceUnits=”kilometers” autoIndex="true”/>
>
> I’m pretty confused on why this isn’t working. I can’t find an example of multiValued RptWithGeometrySpatialField anywhere -_-
>
> Thanks :)