An object-oriented cross-platform programming language developed by Sun Microsystems.
17
votes
6answers
1k views
What embeddable web-based maps exist?
Some of the ones I'm familiar with (in no particular order):
Google Maps (http://code.google.com/apis/maps/index.html)
Bing Maps (http://www.microsoft.com/maps/developers/)
Yahoo Maps ...
11
votes
3answers
3k 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 ...
9
votes
6answers
767 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 ...
7
votes
3answers
2k 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.
thanks,
Jeff
6
votes
3answers
563 views
Add map making to java desktop software
In my project (a desktop application) I need to create a map with three layers, basic geographic layer at the bottom, a GSM coverage area layer on top of it, and then a location based services layer ...
6
votes
4answers
3k views
How to build tile server from Openstreetmap data for beginner?
I am a beginner at GIS and I am developing a Java Application which needs a map. (The map would specifically be of just one city in the Philippines.) I have researched on different ways to do this and ...
6
votes
4answers
813 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 ...
6
votes
1answer
334 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 ...
6
votes
2answers
169 views
Is it good practice to manage all JTS spatial objects as abstract Geometry instances?
I'm new to all this GIS business, and am developing a Java web app using the JTS library. I'm trying to get my head around the JTS classes and how they're supposed to be used.
I have some existing ...
6
votes
1answer
1k views
Find nearest POI of given GPS coordinates
I am new to GIS and need to achieve the following:
Find the nearest train station or bus stop of given GPS coordinates in a Java application. Since there are many coordinates to be checked, an ...
5
votes
2answers
324 views
What does it mean to QI and how is it done?
I'm new to Esri's Arc* interfaces, and trying to figure out how to register an existing table using the ArcObjects API. The following question answers this to some extent:
Is there any way to write a ...
5
votes
2answers
3k 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
106 views
Need an Algorithm to Determining Polygon Borders
I'm currently writing a program in Java and I'm dealing with polygon objects. I want to create a different color border between touching objects depending on their class (i.e. land, ocean, etc). I ...
5
votes
3answers
185 views
GIS Application for online map and journey planner
I am planning to implement an online map application with journey planner for a city. I don't have any experience in GIS development but I have a few years of experience in Java development.
So ...
5
votes
1answer
256 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 ...
5
votes
1answer
225 views
GIS-based reporting and maintenance tool
Background
Conceptually, I am looking for a tool, or suite of software tools that can be readily integrated to help browse data using a GIS-based map (such as Google Maps). The proposed architecture ...
5
votes
1answer
321 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
1answer
224 views
What is the best practice for reading data from a raster band with Java and GDAL?
After using GDAL with Python for a year or so now, I'm getting back into Java and trying to figure out how to use GDAL with it. I am wondering if anyone has had experience with reading data from a ...
4
votes
6answers
2k views
How to get started on web GIS development with Java?
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.
...
4
votes
2answers
1k views
How to develop WMS services in java?
Can anyone point me to any resources regarding developing a custom WMS service in java? I am seeking for a tutorial for an experienced programmer, but including the details of setting up the server ...
4
votes
2answers
847 views
How to use NASA Digital Elevation model data?
I've heard it is possible to use NASA elevation model to determine approximate elevation at (lat;lng) point.
This might be really useful for my upcoming project since Google Elevation API has weird ...
4
votes
1answer
186 views
What is the unit of measurement for buffer calculation?
What is the unit of measurement used by Geometry class for it's buffer calculation ?
Api doc currently defines it as " distance - the width of the buffer (may be positive, negative or 0)"
I need to ...
4
votes
1answer
367 views
Can PostGIS functions be written in Java?
I am wondering if there is a possibility of programming new functions for PostGIS using Java, so that you can refer them same way as classic PostGIS functions are. Something like this:
CREATE OR ...
4
votes
2answers
276 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 ...
4
votes
1answer
468 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 ...
4
votes
3answers
277 views
How to choose a language for web map development?
I am building a web map application using:
GeoServer
OpenLayers
Tomcat
I would like to build a web application, where the user can log in and have the map arranged according to their profile. ...
4
votes
1answer
2k views
Convert Gauss-Kruger to UTM
How to covert Gauss-Kruger coordinates to UTM coordinates with GeoTools java library? As I have figured out the location (zone, country) is important. I need the calculation for Slovenia.
4
votes
4answers
3k 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 ...
4
votes
1answer
686 views
How to setup PostGIS JDBC with Hibernate?
I try to setup an Java Application with Hibernate and PostGIS but I always get nasty exceptions like :
java.lang.NoSuchMethodError: org.hibernate.type.CustomType.<init>
...
4
votes
2answers
2k 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 ...
3
votes
4answers
876 views
best browser framework
Dear all,
I am building a GIS system. All my data is stuffed into geoserver. I need to have a front end able to do the following:
Select one or several layers from geoserver and show it to the end ...
3
votes
3answers
657 views
Java or .net for gis application
I currently use python for GIS scripting in arcgis and image processing using GDAL library. Now, I want to improve my programming skills for GIS application development both for desktop as well as ...
3
votes
2answers
1k 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
613 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 ...
3
votes
1answer
805 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 ...
3
votes
1answer
560 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 ...
3
votes
3answers
142 views
How to access an wms layer that requires authorization via OpenLayers?
Is there a way to send username and password parameter to a wms layer that needs authorization?
If not, I guess it's perhaps a non-spatial thing to solve so that you before the javascript sends a ...
3
votes
1answer
417 views
Is there a Java library to load data from a WFS server?
I am writing a java client to display remote GIS data. I want to load data provided in GML by a WFS server. Do you know a java library I could use for that?
3
votes
2answers
344 views
Is there a common interface for ST_Geometry SDO_Geomtry
I've worked a fair bit with Oracle Spatial and I've had some requests to transition to PostgreSQL Spatial.
Is there a common interface for SDO_Geometry and ST_Geometry? I'm working in Java with ...
3
votes
1answer
74 views
Problem installing ArcSDE engine plugin for Eclipse
I'm looking for the following jars for the ArcSDE API:
jsde_sdk.jar
jpe_sdk.jar
concurrent.jar
icu4_3_2.jar
thanks to this answer I've found that they can be gotten installing the ArcSDE engine ...
3
votes
1answer
198 views
OSS java approach to convert Shapefile to GML
We've got a project coming up where we need to upload .zip of a shapefile, join the .dbf to some lookup tables, join to other tables also uploaded (one to many attributes for each feature), and ...
3
votes
1answer
545 views
Implementation of a tiled map service
I have been looking for solutions on the Internet for the last two days without finding answers. Currently, I have a Java web application that displays a map using OpenLayers. The problem is that the ...
3
votes
2answers
3k 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 ...
3
votes
3answers
365 views
Looking for a Java library for tracking positions, and querying regions
I have a deceptively simple requirement to create a software component to record and update some mobile position information, then be able to perform simple queries concerning mobiles in a particular ...
3
votes
0answers
72 views
Illegal argument exception while reading tiff image using GeoTools
I am working on a Java swings based GIS application to project my tiff image as maps . But each time I run my application I get Illegal argument: "semiMajorAxis=�" . The tiff images I have are working ...
3
votes
0answers
140 views
How to sort a SimpleFeatureCollection using GeoTools?
I have a featurecollection:
SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(dbFeatureType);
SimpleFeatureCollection collection = FeatureCollections.newCollection();
while ...
3
votes
0answers
204 views
ArcObjects - WFS:
Hy,
has anybody an example concerning accessing data from a WFS server by using the DataInteropability in ArcObjects?
I'm getting the right field definistion, but don't know how to read the data.
...
2
votes
3answers
482 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
2
votes
4answers
152 views
What GIS tools and packages are needed to find out nearby users in android application?
I'm building a location based android application with following requirements:
Need to find out nearby users(i.e users using the same application)
Need to find out users in the state
Need to find ...
2
votes
1answer
270 views
Java client for WFS-T?
I have a geoserver with a postgis database on one server and an Java application on a different server.
Now I need to connect these two servers so that the Java application can manage (create, alter ...
