GeoTools is an open source Java library that provides tools for geospatial data.

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Rendering a shapefile with a custom projection in GeoTools

I have an image, a shapefile, and a method which can translate an x/y pixel location from the image into a latitude/longitude point or vice versa. I'm trying to use Geotools to render the shapefile on ...
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2answers
4k views

How to convert UTM (easting,northing) to Geographic (lat,long) in degree decimal using geotools

I want to convert easting, northing values in meters of UTM to lat,long of geographic coordinate system using geotools
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1answer
889 views

What is the most efficient way to create a shapefile from resultset using geotools

I am facing a problem to write to shapefile (geotools) with respect to time, memory etc. My workflow is something like reading spacial data from database Oracle with attributes and coordinates (can ...
2
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1answer
74 views

Extracting data from Natural Earth using GeoTools java class?

I wrote a small java class to extract country boundaries from naturalearthdata.com data. My problem is that the coordinates do not match with OSM map, the whole polygon is shifted... e.g. according to ...
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1answer
21 views

Where are descriptions of attributes in datafiles on naturalearthdata.com?

I have downloaded some datafiles from naturalearthdata.com site. For example, ne_50m_admin_0_countries feature source contains dozenz of attributes with names like scalerank, level, mapcolor7, ...
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1answer
54 views

Bad calculations with Colombian projection (EPSG:3116)

Solved, reading mail-archive I can understand that there is a conflict between: gt-epsg-wkt-9.2.jar gt-epsg-hsql-9.2.jar I tested removing each one, with 'hsql' I get the same wrong result, but ...
2
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1answer
361 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!
2
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1answer
148 views

Why is my longitude conversion from NY State Plane Coordinate System to WGS84 consistently off by 3.665 degrees?

I'm trying to convert coordinates from the NY State Plane Coordinate System for Long Island (zone #3104) to WGS84 using the GeoTools Java API. The latitude value is correct, but the longitude is ...
2
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1answer
133 views

Create image (TIFF/PNG) from geodetic (lat/long) data

Using Java, I need to render a bunch of geodetic data to an image, ideally TIFF or PNG. Specifically this is weather data, with each sample having a latitude, longitude, and amplitude value. I'd like ...
2
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1answer
165 views

geotools parsing kml with multigeometry only gives me first geometry

I'm trying to parse the states.kml file (http://docs.geotools.org/latest/userguide/_downloads/states.kml) on the geotools website using the following code: Parser parser = new Parser(new ...
2
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1answer
99 views

Add features to main SDE Table with geotools

Sorry for my english, I hope you can understand ;) I'am using geotools 8.4 version. I try to copy all features from SDE Table(TEST.DBO.MM_SOURCE) to another SDE Table(TEST.DBO.MM_TEST). All features ...
2
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1answer
314 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 ?
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1answer
259 views

ImageLab Program Problem

I am new to GeoTools. I was trying the samples in http://docs.geotools.org/latest/userguide/tutorial/raster/image.html. I am not able to run the ImageLab sample code. I know it would be some lack in ...
2
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1answer
140 views

Can I use a Geotools raster layer in a Geomajas webapplication?

I am working on a Geomajas web application and have a Geotools RasterLayer (a GridReaderLayer to be precise) that needs to be integrated with the map in the Geomajas app. I have been searching the ...
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1answer
159 views

How to edit and use text produced by Feature InfoTool?

How can I access and use text from Feature InfoTool dialog. I'm working with JMapFrame. I found this snippet: InfoTool tool = new InfoTool() { @Override public void ...
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0answers
59 views

How to convert shp to csv

I am trying to convert my shape files to csv through a batch processing in Java using Geotools. The problem is I have more than 500 shape files (point features). The code is working fine for a small ...
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0answers
27 views

Ortholines in GeoTools

I am using GeoTools 10.7 to generate a map with decorations in my Java application. One of the feature I need in the map is to display ortholines both latitude and longitude. The lines will need to be ...
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0answers
110 views

How to read each pixel of each band of a multiband GeoTiff with GeoTools Java

I am new to working with Raster in GeoTools-very experienced in java. My goal is to read in a geotiff that has multiple bands, then create a HashMap for each pixel, where the key is simply the lat/lon ...
2
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1answer
50 views

Creation of tiled grid in JAVA with geotols

I am trying to create a grid using GeoTools in JAVA, covering specyfic area with resolution 50 m (distance between two points). To do so I have two points: the most nortwestern (let's call it NW) and ...
2
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0answers
379 views

Building java based desktop map application using embedded database such as spatialite

I am relatively very new to building GIS based applications and have a very limited understanding in this area. So I need some help in building a java based desktop application which would generate ...
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0answers
309 views

How to create SLD with inline features and style and add to WMS using GeoTools?

I am trying to create labels with arbitrary values on a WMS map using GeoTools (9.4). I have created a feature type, a feature (in a data store), and a user layer. With that I generated an SLD ...
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122 views

What is the relation between geotools and hibernate-spatial ( differences and similarities)

I know that hibernate-sapatial is supposed to be an abstraction for the db . And from what i understand there is some kind of possibillity to do that with geotools? ( to what extent i do not know). ...
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0answers
255 views

Implement a WFS Server using Geo tools

I need to implement a WFS Server using Geo tools, I have an application developed in Java using a spatial database. I wish to develop a WFS service using GeoTools. As a first step, I am implementing ...
2
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1answer
132 views

Geotools 8.4 CRS.decode invalid(?) reference to HTTP_URI_OGC

I'm trying to do a simple CRS.decode to lookup a CoordinateReference system: E.g. CoordinateReferenceSystem target_crs = CRS.decode("EPSG:4326"); However this fails with a reference to the ...
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0answers
338 views

How to open image file saved with JAI in Geotools?

I need to find NDVI and other vegetation indices and then find changes in time with tif images. I've been using Geotools for this. I took 2 tiff images, then using QGIS I changed them to PNG because ...
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0answers
31 views

How to convert a shapefile to WKT with GeoTools snapshot 9? [duplicate]

Possible Duplicate: Write out a WKT file from a loaded shapefile I need to convert a shapefile to WKT to be read in OpenLayers. The shapefile is one that has been created by Geotools. ...
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0answers
302 views

create geotiff from shapefiles

I need to colorized geometries from shapefiles and convert them to raster image (geotiff). I tried to use geotools's VectorToRasterProcess and ImageWorker ("d:\gis\tmp\32 27 25 w4.shp" is path to my ...
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0answers
320 views

Getting DataStore Problem with Geotools

I recently found an issue with Geotools and getting the datastore for a shapefile. If I try: FileDataStore dataStore = FileDataStoreFinder.getDataStore(file); -or- Map connect = new HashMap(); ...
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0answers
111 views

GeoTools, add column in query with CQL

I'm trying to query the database (DataStore) and want to let the datastore calculate a value for me. In SQL I would do it like this: SELECT name, ST_Area(ST_Intersection(the_geom, ....) AS myValue ...
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84 views

MultiPolygon from database

I would like to know how to create an instance of a Multipoint from a PostGIS database.. I do the query , then got the ResultSet named "area" , the column with MultiPolygon attributes is named "geom" ...
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0answers
128 views

Geotools throws “Cannot encode multilinestring (yet)” while Shape import on Linux

I've encountered a strange platform-dependent SHP import problem. Everything works fine on Windows, shape files are converted fine to database. There is although small little warning: [[ACTIVE] ...
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0answers
239 views

How to programatically add KML Icons to Placemark generated from SimpleFeatures using GeoTools?

I have successfully generated a set of (unstyled) placemarks in a KML file using the GeoTools framework, and the Encoder class. The file renders fine in Google Earth with standard balloon placemarks. ...
2
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1answer
824 views

How can I deploy a custom GeoTools datastore to GeoServer?

I'm using GeoTools v8.0 and GeoServer v2.1.3. I've currently built a working datastore connecting to a PostGIS database based off of the GeotTools' abstract datastore tutorial. After days of on and ...
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0answers
287 views

GeoTiff specs for coordinate transformation definition

I would like to define a GeoTiff coordinate transformation by a set of GCPs only. The intention is to publish the GeoTiff as a coverage in GeoServer. However if I specify tie points only, GeoServer ...
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3answers
89 views

How to convert multiple csv files to shp using Java

I have some 100 CSV files. I want to convert them in shp format using Java. The csv file contains lat long information in WGS84. I can understand it is a batch processing and it is difficult to do in ...
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1answer
18 views

How to get the LineStrings from a MultiLineString

I was wondering if there is a way I can extract the LineStrings from a MultiLinestring object. What I am really trying to do is look into a MultiLineString and see if I have a certain LineString. I ...
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1answer
100 views

Transactions in Geoserver / WFS - Is it possible to know which “action” failed?

I'm trying to implement transactions for some queries to Geoserver. I'm using plain HTTP Post to make the requests, from Java. One of those queries looks something like : <wfs:Transaction ...
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1answer
449 views

Simple WebMapping application with postgis Database

am very new to web-mapping, so this question may be a little misguided. I want to develop a simple web mapping application using OpenLayers which can display Cadastral information that are currently ...
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1answer
165 views

Can we read/write MXD Document using GeoTools

Is it possible we can read/write mxd document only using geotools.
1
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1answer
930 views

GeoTools Dynamic Layer

I need to change the features of a MapLayer in real-time but I don't know how I can update/refresh/repaint the layer on the map without having to remove it and add it again (which creates flickering). ...
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1answer
18 views

GeoTools and image storage / retrieval

Please can someone let me know how I can create a schema (using SimpleFeatureTypeBuilder()), read and write image data? Simple data types (Integer/Float etc) work fine but how do I handle image data?
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1answer
25 views

Java how to create geotiff from points

I have an array of objects where each object has three fields: lat, lon, and category. It is essentially pixels that have been given a land use category. I cannot figure out how to turn this data into ...
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1answer
47 views

How to display additional features

In my application I have a gis file to render an (java BufferedImage) image of countries with geotools which is sent directly to the browser. The colours of the countries (plus name and additional ...
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1answer
38 views

Test for polygon orientation

I'm want to merge multiple geometries with Geotools (starting off with one geometry) but the result is a polygon that has a clockwise orientation. This gives a invalid geometry. My code for the merge: ...
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1answer
63 views

How to check for overlapping check with tolerance using JTS / GeoTools

I have several hundered polygons which may overlap but need to be considered 'not overlapping' when the overlapping is less than 1 meter. The overlapping check in JTS does not offer a tolerance ...
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1answer
51 views

How to create a value-by-alpha map in Java?

Someone has post similar question as mine before : similar question But my objective is slightly different. I have a shape file (.shp) (a country map) I would like to write a piece of java code to ...
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1answer
109 views

dbf file size is increased after exporting opened Shape file into new Shapefile

I have a shape file(polygon features) which has 7 attributes(id,area,etc.,) in dbf file. After reading the shape file i am exporting to a new Shape file in Which i am adding 2 attibutes (id ,area). ...
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1answer
54 views

GeoTools Omitting Quotes in its Queries?

I have a table in my PostgreSQL 8.4 with a column 'Shape' of type 'geometry'. When I start up Tomcat my GeoServer throws an exception: 24 Sep 16:20:25 WARN [geotools.jdbc] - Error occured determing ...
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1answer
908 views

getting error while reading shape file (The following locker still has a lock)?

I am working with reading and writing shapefiles. I can read and write a shapefile but while reading it the warning message below is coming in the console, no error is coming. reading 29 Aug, ...
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1answer
70 views

Writing shapefile metadata with geotools

Using GeoTools, I'm able to write features to a shapefile by essentially passing a SimpleFeatureCollection to a ShapefileDataStore. The feature collection provides both a schema and features including ...