Hi List,
This is my first experience with GISData and GeoTools. I am trying to use
the ShapefileDataStore(URL url) to load up a handful of shape files into my
Geography. The schema and AttributeType of the GeometryTypeImpl that are
created during the ShapefileDataStore construction both contain a null CRS.
I believe this info is usually loaded from the .prj file that is located
in the same directory with the same filename of the .shp file. Does anyone
know of any gotchas here?
Code -
URL url = data.getFile().toURI().toURL();
ShapefileDataStore store = new ShapefileDataStore(url);
SimpleFeatureType schema = store.getSchema(store.getTypeNames()[0]);
// First attribute at index 0 is always the Geometry
AttributeType type = schema.getType(0);
CoordinateReferenceSystem dataCRS = ((GeometryType)
type).getCoordinateReferenceSystem(); <-- Returns null
schema.toString() -
SimpleFeatureTypeImpl
http://www.opengis.net/gml:SoCALbg2010_TRTP_Extent_DATA_NUMBERS identified
extends
polygonFeature(the_geom:MultiPolygon,OBJECTID:OBJECTID,GEOID10:GEOID10,Shape_Leng:Shape_Leng,Shape_Area:Shape_Area,STATEP10_N:STATEP10_N,COUNTRYFP1:COUNTRYFP1,TRACTCE10_:TRACTCE10_,BLKGRPCE10:BLKGRPCE10,GEOID10_NO:GEOID10_NO,INTPLAT10_:INTPLAT10_,INTPLTON10:INTPLTON10,BLKGRP_NAM:BLKGRP_NAM,POP_TOTAL_:POP_TOTAL_,HHI_MEDIAN:HHI_MEDIAN,NOSCHOOL_N:NOSCHOOL_N,NOGED_NO:NOGED_NO,GED_NO:GED_NO,SOMEGOLLEG:SOMEGOLLEG,ASSOCIATE_:ASSOCIATE_,BACHELOR_N:BACHELOR_N,MASTER_NO:MASTER_NO,PROFESSION:PROFESSION,DOCTORATE_:DOCTORATE_,EDUCATION_:EDUCATION_,INCOME_NO:INCOME_NO,POWER_NO:POWER_NO,ALAND10_NO:ALAND10_NO,AWATER10_N:AWATER10_N,AREA_SQMI_:AREA_SQMI_,DENSITY_SQ:DENSITY_SQ)
type.toString() -
GeometryTypeImpl MultiPolygon<MultiPolygon>
prj file content -
PROJCS["World_Robinson",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Robinson"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],UNIT["Meter",1.0]]
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