An object-oriented cross-platform programming language developed by Sun Microsystems.

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5
votes
1answer
742 views

How to sort a SimpleFeatureCollection using GeoTools?

I have a featurecollection: SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(dbFeatureType); SimpleFeatureCollection collection = FeatureCollections.newCollection(); while (mifReader....
1
vote
1answer
7 views

Geotools - Create a line layer

I am using the Geotools library to develop a Java Swing application. I am having a problem creating a layer with lines between points. Can someone help me? Here my code: import com.vividsolutions....
0
votes
0answers
12 views

Error while publishing layer from spatialite store in GeoServer [duplicate]

I've installed Spatialite extension on GeoServer(2.5) successfully. I created a new Spatialite database (*.sqlite file) and loaded some sample shapefiles into it. Then I added a new Spatialite data ...
2
votes
1answer
554 views

Query all Object within n kilometer Radius with Hibernate Spatial?

I use hibernate spatial attach a geolocation to a car. My card domain class looks like this: import com.vividsolutions.jts.geom.Point class Card { String name Point location } My program is ...
0
votes
0answers
15 views

Find out if a coordinated is ahead of other [closed]

I would like to know if is there a practical way to find out if a coordinated A is leading a coordinated B , knowing that the direction that the coordinate is moving. I have an idea that compares the ...
0
votes
1answer
192 views

Calculating intersection between lines with GeoTools (java)

I have ArratList<Segment> (N segments - array size is N) when: public class Segment { Node vertex_1; Node vertex_2; } public class Node { double latitude; double longitude; } ...
1
vote
2answers
226 views

Creating a raster file from a shapefile using GeoTools with different colours for different features

The shapefiles that I am processing display information on an operation of a piece of equipment over an area, where the information is stored in steps as polygon features with various attributes and ...
4
votes
2answers
526 views

Read DGN file in java or c#

I'm looking solution to read DGN file in java or c# without any success. Gdal makes many problem and doesn't support all element eg. complex element. Does anyone know of a library that supports the ...
1
vote
1answer
17 views

Interpolation in Geoserver

I am new to use Java and Geoserver. I have a point sampling location (N,P,K Nutirients value for few fields spanning acroos few acres) on which I want to execute IDW or Natural Neighbourhood ...
2
votes
1answer
224 views

Generate a game world using planet.osm (in .pbf format)

I've recently downloading openstreetmap's Planet.osm for use in an experiment whereby I plan to generate a video game world based off of the planet. openstreetmap's wiki hasn't been very useful, and ...
1
vote
2answers
1k views

GeoServer failed to start on Tomcat 8.0.24

I am trying to get GeoServer up and running on an Amazon EC2 instance but it does not work. I am using Java 8 (Oracle) and Tomcat 8.0.24. The thing is I have got the same stack up and running on a ...
3
votes
2answers
134 views

Testing if Geometry is convex using JTS?

I'm using the Java Topology Suite and I'd like to efficiently check if a Geometry (a Polygon in fact) is convex or not. I currently do if (geometry.convexHull().equals(geometry)) but obivously that ...
1
vote
1answer
219 views

How to combine LineStrings using JTS

I want to combine LineStrings with common points. The scenario looks like this: I tried it using the GeometryCollection.union() method like suggested here: http://docs.geotools.org/latest/userguide/...
2
votes
1answer
253 views

How can I call gdal_translate from Java code?

How can I execute gdal_translate in Java? For example, will something like this work? gdal_translate "PG:host=localhost dbname='xyzy' schema=public' table='xyz'" "d:\xyx\ab.tiff"
1
vote
1answer
121 views

How do I generate a WorldWind importable image file with a transparent background using an SLD file with PointSymbolizers on Geoserver?

I've been tasked with visualizing a few types of metoc data onto Worldwind based on .grib files. I'm VERY new to the GIS world and I'm just beginning to figure out how a lot of these pieces go ...
1
vote
3answers
1k views

Getting exceptions with simple hello worldwind java app

Let me preface this by saying I'm very new to Java, eclipse and worldwind. So, I've got a bare bones java app. I imported worldwind.jar into the build path. Created a simple JFrame, code below, and ...
1
vote
1answer
21 views

ExternalGraphics - gray squares instead

I am creating point symbolizer with external graphic, and it works great if I load an image/png, but when I try to load svg file I get gray squares on map StyleFactory sf = CommonFactoryFinder....
0
votes
2answers
226 views

Android Google Maps average polyline paths

I'm making an android app that maps my path through plotting polylines using the google map API. If I have several of these paths, it just looks like a bunch of paths plotted on top of each other. Is ...
1
vote
0answers
22 views

using java to get ways from osm [closed]

I just try to figure out how to query all ways within a radius of let's say 1km from a defined point. Here is an example of what I mean: I've already read about overpass api, GeoTools and ...
0
votes
1answer
281 views

Using Leaflet: How do I get it to display one popup based on a condition?

Using Leaflet: How do I get it to display one popup based on a condition. See below. basemap_0.addTo(map); var layerOrder=new Array(); function pop_thunder(feature, layer) { ...
1
vote
1answer
1k views

ArcGis Server Java script API error code 500 while using proxy.ashx on one particular server

I am looking for help with using proxy.ashx in Javascript API on one particular server at a client site. We have a GP service that the proxy is used to access (when request is more than 2048 ...
0
votes
2answers
187 views

Spatial Reference Conversion

I am currently having some problem with the spatial reference projection on the map in Android. Basically I have a base map which is OneMap and all the coordinates stored in database is in SVY21 ...
2
votes
2answers
35 views

is it possible to store empty geometries in an Oracle Database?

I'm trying to fix a GeoTools issue but I'm running into problems putting empty geometries into my Oracle database. Basically executing: select SDO_UTIL.FROM_WKTGEOMETRY('POINT EMPTY') from ...
0
votes
1answer
23 views

Why can't osm2po router find vertexIds when I use Graph.SUPPORT_EDGEFLAGS?

I am using the Osm2po.router in Java, trying to find the clazz of roads from this Get road type (clazz) in osm2po. When I am using the router without any supports, I am able to find the vertex Ids. ...
2
votes
0answers
15 views

set bounds for pointLayer based on another layer size

I am creating a simple method for drawing Points on map, and have problem with full extent. I create a new point layer and add it to mapContent, and the problem is that it set bounds somewhere around ...
3
votes
1answer
96 views

Whitebox GAT not starting under Windows 10 - General JAVA or Whitebox problem?

I am currently running the DEM preprocessing on a relatively large (50000 km2 at 30 m resolution) and steep DEM. The objective is to extract the stream network and some morphologic attributes (e.g., ...
1
vote
1answer
27 views

Choosing opengis or geotools imports dealing with geotools library?

In some cases, I have to use some classes of GeoTools library. Most of class names are duplicated in org.geotools and org.opengis package. for example, StyleVisitor, Symbolizer, PointSymbolizer, etc....
2
votes
0answers
28 views

Coordinate Reference Systems error CRSAuthorityFactory

When I try to set CRS in geotools application first time it works great but after that I get FactoryNotFoundException it shows me this in console Exception in thread "AWT-EventQueue-0" java.lang....
0
votes
1answer
43 views

MultiSelectionTool - selecting multiple content in multiple layers

I am trying to create MultiSelectionTool that will work in multi, and have a problem with extending selection if Ctrl is pressed while selecting, it just deselect the everything else before and start ...
0
votes
0answers
15 views

Can't get a response from a wfs2.0.0 using Geotools

I have some issues with the WFS-NG extension of Geotools 14.3. I am using the code below to get a data store from a distant server : String getCapabilities = "http://ids.craig.fr/wxs/public/wfs?...
5
votes
1answer
737 views

Algorithm to find N nearest points to point?

I'm trying to build a mobile app, and find the x number of points closest to a users location that satisfy certain conditions that the user chooses on the front end. My current solution is to ...
1
vote
0answers
26 views

Read a shapefile and write an identical one using GeoTools

How would one go about reading a shapefile using GeoTools and then writing it to disk so that the read and written are as identical as possible (idempotent)? I do not feel familiar enough with ...
0
votes
2answers
116 views

How to clear JMapFrame with multiple layers

Is there any way to clear a JMapFrame and all of its layers before opening a new file? I currently am running into an error (exception no stack trace) while opening a file with one already open that ...
0
votes
0answers
42 views

Displaying Dijkstra's result as a path in a map

I have implemented a Java Program that asks for two points X and Y and then run Dijkstra algorithm to find the shortest path from X to Y. The returned path is represented as a sequence of nodes each ...
1
vote
1answer
31 views

JSON Error? - Unfolding library - Bug or something else?

While trying to make use of GeoJSONReader from the Unfolding Library, while compiling I got the following error: A JSONObject text must begin with '{' JSON Error: Expected a ':' after a key org.json....
0
votes
0answers
9 views

Strip characters in Java/QML in App Studio for Arc GIS

I'm trying to change the display text for attachments in the Arc GIS App Studio. I want to strip a number of characters from the front of the string, and a number of characters from the end and keep ...
2
votes
1answer
132 views

Solving java.lang.RuntimeException: No osm2po-GraphFile?

I tried to use osm2po as a library and write a simple routing program based on the sample code at (http://osm2po.de/) However, when I try to load the .pbf file into the data structure "Graph". The ...
0
votes
1answer
166 views

ArcGIS WMS in Android. ArrayIndexOutOfBoundsException

I have a simple Android application that used the ArcGIS SDK to render a map, that works fine, but when I try to use a WMSLayer to render over my map, it generates me an ArrayIndexOutOfBoundsException ...
1
vote
1answer
25 views

Getting trouble with prefix clause for an ArcObjects Java query filter

I'm using ArcObjects/Java for ArcGIS 10.2.2 and I'm trying to get unique values of a field for a feature class. Here's my current code: List<String> values = new ArrayList<String>(); ...
1
vote
1answer
88 views

Parsing and rendering JSON data in Java with GeoTools [closed]

I'm working on a Web Map Service written in Java and using the GeoTools library. My goal is to make the data parsing json format, so I'm using the form Unsupported GeoTools. This is the parsingJSON ...
1
vote
1answer
26 views

Getting data from postgis with hibernate is returning an hash instead of the rows

Is the first time that i use spring and hibernate starting from the basics, i need to get geometries from a postgis table populated with Qgis. I generate a persistence mapping of the table with ...
1
vote
1answer
71 views

Representing json data on a map with GeoTools (Java)

I'm working on a Web Map Service in Java. Practically this WMS allows me to represent the map of open data type (shp, kml and gml). I'm going to start working even with data in json format, and for ...
0
votes
1answer
86 views

Read WKT geometry using JTS 1.13 in java

I want to create a shape file from coordinates, in the client side I take the coordinates of a polygon by opelayers, it send to a java class, in this class read the geometry of the polygon, when the ...
0
votes
0answers
21 views

Transforming GML into image?

I am looking for a simple way to transform a GML file into an image. I have a number of SLD files to provide the formatting. In the past we used an XSLT style sheet to transform the GML into a SVG ...
1
vote
1answer
424 views

Create shapefile based on geojson data with geotools (Java)

I'm using Geotools 14.0 for Java and I'm trying to generate shapefile based on data from GeoJSON. Here is my code: try { String url = "geojson.json"; File geojson = new File(url); ...
0
votes
0answers
69 views

Geoserver not starting

I have downloaded Geoserver 2.8.3 on a fresh Ubuntu installation which I access via SSH. I installed Java 8 and setted up JAVA_HOME and GEOSERVER_HOME to the right locations. When i run ./startup.sh ...
3
votes
1answer
52 views

Geotools 12.3 creating shape file from coordinates

I want to export a vector layer to a shape file (create a zip file with .dbf, .fix. prj and .shp), but when the exported .shp file is opened in a Desktop GIS it doesn't show anything. For the ...
3
votes
1answer
49 views

How to get latitude and longitude of Point plotted on the map using mapbox

How can I retrieve longitude and latitude of Point plotted on map ? I am testing one website in which I need to verify longitude and latitude of Point plotted on the map. Map has been developed using ...
0
votes
0answers
37 views

Insert shapefile drawn features into PostgreSQL

Sorry my question is repeated, unfortunately i didn't get the proper solution for the problem. I have a LeafLetjs map on which I draw features like: points, polygons, markers, lines etc and I am ...
2
votes
0answers
78 views

Insert shapefile draw features into PostgreSQL database using java EE (pragmatically)

I am working with PostgreSQL 9.4 and Java EE i want to insert shapefile or layer's features into PostgreSQL, is there any solution so i can insert the whole shapefile into database. OS Windows10. ...