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

learn more… | top users | synonyms

2
votes
2answers
115 views

Can I use “Web Map Service Module” and “Web Feature Service Module” of Geoserver in my project?

I'm developing a GIS application with java Spring Framework and GeoTools library. I have some vector layer. I want to get this layers with wms and wfs protocols. I've downloaded geoserver code. It ...
4
votes
1answer
2k views

Write out a WKT file from a loaded shapefile

We are looking to load and display a shapefile, simple polygons, then write out a WKT string of that shapefile and have the user save it somewhere. Does anyone have some code snippets of that very ...
12
votes
4answers
2k views

How would I create my own geocoding web service

I would like to write a geocoding web service for genealogy in Java. Because it is for genealogy, I don't need to go down to the street level. I only need to go down to the county. Looking at ...
0
votes
1answer
2k views

How current is GDAL in Java

I have used the ogr2ogr to import various formats to Postgres and have used GDAL utilities. Is there a complete Java port for these tools? Or are they simply wrappers calling JNI to C++ code? I have ...
4
votes
4answers
5k views

How do I remove Schema Locks from a File GeoDatabase in Java in ArcGis 9.3?

I have an application written in Java which uses ArcObjects 9.3. The application accesses a file GeoDatabase. The application produces output in the GeoDatabase that will be accessed by ArcMap. The ...
2
votes
1answer
160 views

Point to Line Calculations

We are looking to take a point and compare it against the nearest point to an adjacent line. All values are in lat/long. We tried using some of the concept found on the board but found it did not ...
1
vote
4answers
3k views

How to get intersection point from two lines (two coordinated points and two bearings)

I have tried for ages to find the algorithm for getting the coordinate of two intersecting lines from two given coordinated (latitude and longitude) points. As the picture below suggests, I have two ...
16
votes
5answers
9k views

Geocoding API Comparison

Is there a good updated source for comparing existing Geocoding APIs (i.e. Google, Mapquest) and their features? I'm really interested in their language support as well. For example, Google has ...
14
votes
3answers
6k views

Algorithm to find nearest point

I've a list of a few hundred cities with their latitude/longitude. Given another location (also in lat/long) I need to find the nearest city. As I don't use any GIS, by now the obvious algorithm is ...
10
votes
6answers
1k views

Java, GIS knowledge…What next?

I know programming in Java and I am familiar with GIS concepts as well. I do GIS programming using javascript and PHP. I want to now do it using Java. How should I go about it? PLease let me know ...
8
votes
4answers
4k views

Embedded spatial database for Java?

Are there any embedded spatial databases for Java? I've come across H2 Spatial, but it was difficult to tell the status of that and if it can be used as an embedded spatial database.
6
votes
2answers
6k views

GeoJSON java library

I am creating a Java web service that receives GeoJSON. Does anyone know a java library to manage GeoJSON?
4
votes
7answers
7k views

How to get started on web GIS development with Java? [closed]

I am very new for GIS, I know java web development. I want to develop a GIS web application in Struts, can you suggest me how to start? My requirement are as - Any API/Tool should be open source. ...
5
votes
2answers
6k views

How to parse KML data using geotools?

Geotools contains some packages dealing with KML: org.geotools.kml and org.geotools.kml.bindings. I assume it was designed to parse KML data. Do you know how to use it?
5
votes
2answers
5k views

java vividsolutions jts wgs-84 distance to meters

my (java) project uses com.vividsolutions.jts.geom, which provides a distance function. After some googling I finally found that the return value from this function is in central angle degrees, when ...
4
votes
4answers
2k views

How can I find closest point on a polygon from a point

I have a point that may be inside or outside of a polygon, I need to find the nearest point on the polygon boundary from the point. Point(x,y) may be inside or outside of the polygon, shortest ...
3
votes
1answer
244 views

Exporting Shapefile to SVG using Java & GeoTools?

I am currently working on how to read in ESRI shapefiles, parse/edit layers and then export out to SVG (Scalable Vector Graphic) file type. I have been using GeoTools primarily for reading/loading ...
3
votes
1answer
506 views

What is the best API to use GeoTools or uDig (for the context of my application)?

I am trying to develop a java application that displays : Google maps, Openstreetmap and Bing Map Data. So which is the best SDK to use in this contet Geotools or uDig ?
1
vote
0answers
2k views

retrieve some info from GRIB2 file with JAVA

I've just started parsing some info inside GRIB2 file with NOAA weather forecast, and I am realizing this task is not as easy as I could think 'a priori'. I need to process some info inside JAVA ...
1
vote
1answer
160 views

building opentripplaner gtfs.zip [closed]

I am building a journey planner app using opentripplanner. i have followed their two minutes tutorial in which we just run webapp which uses pre build graph.obj file, it works fine. But in next five ...
5
votes
1answer
327 views

How to add Opencarto to a Geotools project?

I've installed geotools through maven (and m2ecplise) but i'm not able to add opencarto library to my project. (As you can guess, I'm new to java) I tried by adding opencarto's main folder as library ...
3
votes
2answers
443 views

Displaying a GeoServer Map from a Java Mobile Application

How can I display a Map generated by GeoServer from a Java Mobile Application? I would like to display it inside a Java App instead of a android application. Is this possible?
2
votes
2answers
2k views

How can I link java with QGIS?

I want to create a Desktop project on Java which shows radiation dispersion. How can i Link java with QGIS? Is there any tutorial site i can get reference from?
2
votes
3answers
7k views

Displaying Google Maps and OpenStreetMap map in Java?

Is there any Java API that is like OpenLayers ? I would like to display google Maps and Openlayers Maps in a java application
1
vote
2answers
1k views

Getting time dimension from GRIB file?

I have a GRIB file from NOAA that contains several variables for a specific subregion in Norht-East Atlantic. I'm using ECMWF grip-api Python library to parse the file. While I'm able to get the ...
1
vote
3answers
6k views

How to check if a point is near or inside polygon?

I am trying to find a simple library which can do point in polygon. Earlier i did hit Java Spatial Index library ...could not figure out. Tried openmap..looked simple didn't work. I am totally new ...
0
votes
0answers
268 views

Help with opentripplanner

I have started working with opentripplanner (i am developing a journey planner app). I am following the two & five minute tutorial given on opentripplanner website. but while starting server using ...
7
votes
1answer
7k views

How to draw polygons on an existing map?

If you want a map with some circles, squares, etc. representing cities or something else you can use the following code. Note that you can change the map and the coordinates with yours, and you'll ...
5
votes
3answers
9k views

Geoserver/java out of heap space - how do I increase it?

I'm new to Geoserver, Ubuntu and Java, but have downloaded a virtual machine from gisvm.com and am getting up to speed. I got as far as configuring it with some fairly large shapefiles from a project ...
4
votes
2answers
382 views

How to register shapefiles to an image?

I'm generating images from various sources and the projections are not necessarily known ahead of time. The images are subject to interpolation and other alterations while being rendered, but I can ...
2
votes
3answers
2k views

Starting a GIS project in java with OSM data

I am starting a new GIS project in Java. Till now, I used JTS and geotools to load shape files - these data were then displayed on a swing interface. For this new project, I would like to use OSM ...
6
votes
1answer
875 views

Data visualization and maintenance tool

Background Looking to leverage an existing GIS system for exploring organizational data. Architecture The following figure represents a high-level overview of the system's desired features: The ...
3
votes
1answer
1k views

Is there a WFS and WFS-T Java library that plays nicely with Android?

I have a GeoServer database and various programs that query it and so forth using GeoTools. Now I'm making a map app for Android, but not only is GeoTools quite large with all it's dependencies (15 mb ...
2
votes
1answer
901 views

Oracle spatial - check polygon vertices counter clockwise

I need to import a huge number of polygons from a third party (as a csv file- array of x,y's). I have to check whether the polygon vertices are in clockwise or counter clockwise, finally i have to ...
1
vote
1answer
408 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 ...
1
vote
1answer
993 views

Geotools create/save shapefile has no geometry information

When I create and save a shapefile in GeoTools, then open it in ArcGIS or QGIS, it doesn't show up on the map, even though the features are there in the attribute table (and all attributes I added ...
0
votes
1answer
120 views

What is the best possible configuration for opensource GIS web application to generate a war file?

I have developed a GIS web application using OpenGeoSuite for Electricity Asset Management System. It uses Geoserver, PostGIS/PostgreSQL, PHP, GeoExplorer for normal functioning. However, I need to ...
0
votes
1answer
672 views

Filter Vector Layer Features

I'm using OpenLayers - 2.11,GeoServer 2.13, ExtJS 3.4, and Java for developing GIS based web applications. I have added some point features in one vector layer. It has id, name, address, etc. Can I ...
7
votes
2answers
2k views

Find Perpendicular Distance and Minimum Perpendicular Vector between a Point and a Line using GeoTools and JTS

I have a line formed by 2 lat/lon pairs, and the lat/lon of a point. I would like to find out the perpendicular distance between the line and the point on the Earth surface (can assume Earth as great ...
5
votes
2answers
1k views

Overpass XML query for finding all buildings inside a polygon

I want to run following Overpass QL query in order to get way IDs of all buildings inside a polyon: way(poly:"50.7 7.1 50.7 7.2 50.75 7.15")[building]; >; out ids; Since I'm using the osm-common ...
4
votes
2answers
240 views

Finding the boundary polygon from a set of gridded points (no hole)

Let us consider a set of a 2-D points (longitude, latitude) each of which is centre of square grid (intersect point of the diagonals of the square). I try to make you understand what I want to do in ...
4
votes
3answers
3k views

converting/parsing geojson into com.vividsolutions.jts geometry

Does any has any experience with converting string geojson into com.vividsolutions.jts geometry object (point, polygon, etc). Maybe there is some java library I cannot find. Greets!
3
votes
1answer
28 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
155 views

Whitebox GIS installation on linux

Can anybody give guidance to installing Whitebox GIS software on linux? I have already: set up a clean xfce4 machine installed java 8 successfully unzipped the latest version of whitebox (Iguazu ...
3
votes
2answers
320 views

What does the values in column clazz (osm2po) mean?

I have a given table in postgreSQL with OSM data which is used for routing purposes in Java with PGRouting. There exist two columns which I don't understand. They belong to osm2po. They are labeled ...
3
votes
3answers
2k views

Java Contour Algorithm

Does anyone know if there is an open source project in Java that will take a set of (x, y, z) points and create a contour map for Google Maps/Earth? There does not seem to be a good contouring ...
3
votes
1answer
861 views

Good Java-Based Raster Libraries

Can anyone suggest a good, Java-based raster library? By good, I mean a library that can read common raster formats (ex. tif, img...etc) and save them to other image formats (ex. png). I say ...
2
votes
1answer
2k views

combine several polygon objects in one polygon object with geotools (is it possible)?

I have several polygon objects and I need to "merge (or combine or dissolve)" them toghether into one polygon object. With a GIS tool like Quantum GIS, I do this with Geoprocessing option "Combine ...
2
votes
1answer
391 views

Setting up Eclipse for ArcGIS Engine Java development?

I'm trying to setup Eclipse for ArcGIS Engine 10.0 development. I've been reading for days and weeks through the documentation and through the forums here and elsewhere. It seems that no one has this ...
2
votes
3answers
410 views

Choosing Java web framework for project?

We are developing java web gis application. We use geoserver, postgis, geotools(all the core code). We need to show/hide(or create/delete) dynamically vector layers(from shape file) and raster ...