geotools

问题 What is Google map's spatial reference system using when you enter a lat, long into the maps search bar? I've found hints that it might be WGS84 but after converting to that coordinate system, nothing shows up when i paste the coordinates into the google maps search box. I am converting from GDA MGA 56. Sample: Input MGA56 coords: 336301, 6253363 Expected WGS86 coords: -33.8473340793201, 151.230631835944 I get: 16834916.928327594 -4008321.1020318186 Spatial coord systems: EPSG:28356 for MGA56

问题 I want to use geotools(8.0-M3 currently, could be also 2.7.3) library in an Android app, using eclipse. (win7 prof, 4gb ram) But the build process crash, and i get following error Unhandled event loop exception Java heap space The java heap space problem should be solveable, but it seems there is more. (3gb should be enough, isn't it?) My final target is to be able to request a postgres postgis db on geoserver by OGC "web feature service" and "web map service". I already set the eclipse ini

问题 I'm working on a Grails app over Neo4J which I'd like to also export as a GIS database. Looking at the examples for how to use neo4j in GeoServer/uDig it appears that the Spatial integration is only via embedded neo4j databases. Does anyone know whether it's possible to set things up so that my Neo4J is available over REST, so that I can interface to it from a variety of places? At first sight it appears that it ought to be possible: // Works with this embedded database //def graphDb = new

问题 I am working on parsing a MapInfo TAB Format file in Java. It consists of a set of four files viz .TAB, .ID, .MAP and .DAT. After searching on web I came across a parser provided by GeoTools at this repository: https://github.com/geotools/geotools/blob/master/modules/library/main/src/main/java/org/geotools/data/MapInfoFileReader.java When I use this API for parsing the MAPInfo TAB format file bundle, the API throws exception: "Didn't find a minimum of three control points in the .tab file." I

问题 I have a number of points which make getOrthodromicDistance method to fail with exception in geotools lib, while these points are valid lat lon points: Point which throws the exception (lat,lon): val p1= (5.318765,-75.786109) val p2= (-6.32907,106.09254) eg exception: No convergence for points 75°47,2'W 06°19,7'S and 106°05,6'E 05°19,1'N. java.lang.ArithmeticException: No convergence for points 75°47,2'W 06°19,7'S and 106°05,6'E 05°19,1'N. at org.geotools.referencing.GeodeticCalculator

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . I am looking for a Java library to display map data from various sources, including shapefile, WMS, WFS, Google Maps, possibly ArcIMS, etc. It seems like OpenLayers is the closest thing to what I want, except it's a JavaScript library, and I'm writing a Swing application. GDAL looks promising, but as far as I can

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . I am looking for a Java library to display map data from various sources, including shapefile, WMS, WFS, Google Maps, possibly ArcIMS, etc. It seems like OpenLayers is the closest thing to what I want, except it's a JavaScript library, and I'm writing a Swing application. GDAL looks promising, but as far as I can

问题 I want to compute the nearest distance from a point to a shp file (ports.shp) from natural earth data. For example, I am loading the features of the file: ... String filename = "10m_cultural/ne_10m_ports.shp"; ... public static void Calcs(String filename) throws IOException, NoSuchAuthorityCodeException, FactoryException, TransformException { HashMap<String, Object> params = new HashMap<>(); params.put("url", DataUtilities.fileToURL(new File(filename))); DataStore ds = DataStoreFinder

问题 I have a geometry object of type (com.vividsolutions.jts.geom.Geometry). it is currently in latitude, longitude form and I'd like to flip the coordinates so that its longitude latitude so that I can have it in GeoJSON format for mongodb. My constraints that I am seeing are: a) the input that I would like to flip coordinates for is a Geometry object. b) The Geometry object will be either a Polygon type or Multipolygon. c) I would like to flip the coordinates before the type cast to Polygon