Questions tagged [java]

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

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Accessing shapefiles using Java in OpenShift

I have shapefiles in my resources directory and see them in the jar. After executing my service, the logger in OpenShift shows this: "Read lock: file:/opt/app-root/src/file:/opt/app-root/src/mars-...
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1answer
24 views

Convert Mapinfo files into KML files, to check if coordinates are inside a polygon

Sorry for my absolute ignorance, I have 1 day of experience in GIS systems (I'm just a Java developer). Our client did provide us a compressed file with huge .TAB, .MAP, .ID, and .MAP files, and wants ...
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1answer
9 views

Can not cast class javax.measure.unit.Unit (tec.uom.se.unit.BaseUnit and javax.measure.unit.Unit)

I am having an issue with the below exception being thrown, not sure how to solve it. Measure distance = ..... Unit<Length> unit = distance.getUnit(); CoordinateReferenceSystem origCRS = CRS....
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Maxent Fatal error: java.lang.ArrayIndexOutOfBoundExceptions: 44

I have come across a fatal error for some of the species I am modeling: Fatal error: java.lang.ArrayIndexOutOfBoundExceptions: 44 (or other numbers). The error only occurs when I am selecting "...
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Creating Quadtree/Space Filling Curve Index atop GeoTiFF

I'm a complete beginner in GeoTiFF manipulation. I'd like to get some help in possible Java/Python/Scala project which performs spatial indexing (Quadtree, Space Filling Curves) atop given image(s). I ...
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11 views

Place marker on map - GeoTools 25-SNAPSHOT - Java 11 [duplicate]

I am using GeoTools 25-SNAPSHOT in my application. I have displayed a map in my application (raster). Now I want to place a marker (image or simple colored dot) on a map at a specific latitude, ...
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1answer
67 views

GeoJSON custom marker for different data sources

I need help how to show markers with two different colors for two different GeoJSON data sources. Here's first source geojson.php: { "type": "FeatureCollection", "...
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1answer
47 views

Transform coordinates [duplicate]

I have two shapes, one called bike_stations and another one called quite_streets, both contains geographic information about elements in Madrid, Spain and each one come from two different sources. The ...
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7 views

The Java API bindings: Band.GetActualBlockSize

The Java API bindings are missing Band.GetActualBlockSize: https://gdal.org/java/org/gdal/gdal/Band.html I have several questions: Is it possible to reproduce the code for https://gdal.org/api/...
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1answer
30 views

Maxent can't get past “javalang.ClassCastExeption: [D cannot be cast to [F” error message

I have turned all stones I can think of how to solve this, and it feels like it should be something simple I am missing, but I just can't get Maxent to work. When Maxent (v.3.4.3) reaches the step &...
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1answer
23 views

JTS transform leads to strange results

I'm trying to transform a JTS geometry from EPSG 3035 to 4326 with the code attached below. However, when I'm just reading the geometry from a WKT, the results are different from the expected value (...
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1answer
54 views

How to save/import .shp file data to a PostGIS table in Java

Ok, I've searched and at a loss as to why I cannot find anything on how to save a shapefile to PostGIS with Java. Thought GeoTools might be helpful, but doesn't seem to be there either. So here's the ...
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1answer
41 views

Plotting grib file in Java GeoTools

I'm fairly new to Java and GeoTools and I'm trying to plot this grib of meteorological data; I have the code for shapefiles, but I don't know where to go from here: File file = JFileDataStoreChooser....
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38 views

Logarithmic Relationship for Chart in Google Earth Engine?

In the below code, how can I compute logarithmic trendlines? Google Earth Engine just computes linear, exponential and polynomial automatically. In other words I need slope and offset values in ...
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46 views

How can I access Scripts in GeoServer [closed]

I am facing a problem while accessing Script menu in GeoServer. I have downloaded a .jar file somewhere from the extensions. I placed it in Webinfo Libraries. When I open GeoServer I can see the ...
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1answer
38 views

How to extract coordinate from GML File in Java using geotools with STAX

I would like to extract all coordinates from my GML file and convert them in geometry type: <geometrie> <gml:MultiCurve srsName="EPSG:3944" srsDimension="3"...
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40 views

Spatial indexing of GeoTIFF images (Java Library)

I have a requirement to spatially index each pixel of GeoTIFF images and store them in a scalable database. I intend to perform this in the following manner. Divide each GeoTIFF into smaller tile ...
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231 views

Can't start GeoServer although environment variable has been set on Windows 10

Yesterday, I started the GeoServer server and it worked perfectly, so I stopped the server by closing the command window. Today, I want to start again, by running "startup.bat" (as admin) in ...
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87 views

PostGIS SQL error in Java: no spatial operator found for st_contains

I'm quite new in PostGIS, and I'm trying to run an SQL query. I use this query to obtain a subset of segments from table roads in a group of polygons, then put the result in a separate table. There ...
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1answer
143 views

Buffer line between two coordinates with meters

I am trying to build a polygon (with long/lat coordinates) over a line between two points (long/lat as well). Basically what I used is line buffering with meters as an distance. However I have noticed ...
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1answer
73 views

out of memory error: Java heap space

I have installed GeoServer 2.5.5 on Win 7. When I try to view a raster pyramid I see this message: OutOfMemoryError : Java heap space. I google it, but it wasn't useful because I don't use Tomcat ...
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10 views

Use layer from Luciad

I am trying to use a layer from LuciadFusion using the interface ILcdLayer. https://dev.luciad.com/portal/productDocumentation/LuciadFusion/docs/reference/LuciadFusion/index.html?com/luciad/format/...
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1answer
53 views

Converting a GeoJSON file to vector tiles compatible with CesiumJS in Java

When I explored on google, I found a lot of packages in Github which were in JavaScript or NodeJS. Did anyone has written a code or came across a library in Java to convert GeoJSON to tiles?
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1answer
49 views

Validating schema of my XSD wth GML with GeoTools

I would like to control if my GML file is valid with my actual XSD using GeoTools. I found something here: GML2 Parsing TestSchema Example. But I don't know if it's a good way to do what I want. ...
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0answers
37 views

Exporting shapefile to DWG

I need export a shapefile to DWG using Java. I have seen many examples of how to export a DWG file to PDF, but I have not found any that directly export from shapefile to DWG . Is it possible to do ...
2
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1answer
72 views

How to remove a vertex from a MultiPolygon and return the bounding polygon in JTS

I'm trying to complete a code implementing the Kirkpatrick algorithm in Java using JTS and it's literally the first time doing working with such tools. There's a part that I need to remove a known ...
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10 views

start-geonetwork.sh is not found

I want to set the heap for Geonetwork and as the doc says, I need to add this line to the start-geonetwork.sh script : java -Xms1g -Xmx1g -Xss2M -XX:MaxPermSize=128m -Dgeonetwork.dir=/app/...
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1answer
67 views

Casting LineString to Polygon results in ClassCastException when y coordinates are the same

final WKTReader wktReader = new WKTReader(); String geomString = "MULTILINESTRING ((-98.753985 34.63093, -98.7555568 34.63093))"; MultiLineString geom = (MultiLineString)wktReader.read(...
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0answers
82 views

How do I read the GPS data from a GPS device using Java

I want to read data from a GPS device connected to my laptop and find the latitude and longitude. I searched a lot about it but could only find Android related programs. How do I read the GPS data ...
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8 views

How to fix Cannot create PoolableConnectionFactory (FATAL: password authentication failed for user ) [duplicate]

I am working on project using GeoServer, PostgreSQL and docker. I am newbie in all these technologies. I publish new layer in GeoServer and when I try to preview, my browser tries to download instead ...
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0answers
47 views

Reading, displaying and modifying a raster using Java

I am new to the Geotools library. The idea is to display and be able to modify a raster in java with the said library. I referred to the code of MARK. According to the description of the test class, ...
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0answers
30 views

Detecting if a geocoordinate point is land or ocean in Java

I'm trying to find whether a given location with latitude/longtitude is a land or water. Is there any library in Java that gives me a result of my question?
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0answers
247 views

How to deserialize geoJon input to locationtech.jts.geom.Geometry [closed]

I have following input to a Spring ReST endpoint: { "featureType": "feature", "geometry": { "type": "Point", "coordinates&...
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0answers
327 views

Error while creating PostGIS entity with Hibernate and GeometrySerializer : No qualifying bean of type 'GeometryParser<?>'

I tried to create a simple application with a geometry persistent layer (Spring boot with hibernate-spatial) Here is my Entity class : // Annotations from lombok project @NoArgsConstructor @...
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3answers
439 views

Remove/Fill holes in Polygons from a MultiPolygon using JTS Topology Suite programmatically

There are several questions/answers using ERIS,etc. like: Remove holes from polygon But I am having a challenge applying the solution programmatically using the JTS Topology suite only. Below is an ...
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102 views

Enable Mosaic Native Acceleration in GeoServer 2.17

I am trying to optimise my server's GeoServer configuration for serving WMS. My server is running Ubuntu 19.10. I'm following the 'GeoServer on steroids' guide which recommends enabling 'Mosaic Native ...
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0answers
44 views

getting convert X and Y to lat and long

I have a table called IK_TEMP and it contains columns called data, range . String sql = "SELECT DATA, RANGE FROM IK_TEMP"; try (Connection conn = this.connect(); ...
1
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1answer
93 views

Tomcat 8.0 and GeoServer 2.17 on Windows Server, trouble upgrading JDK to latest version [closed]

I have Windows server running Apache Tomcat 8 and GeoServer 2.17. The JDK installed when setup is older, JDK 1.8.0_73. I've now installed JDK 1.8.0_251. I changed my global env variable JAVA_HOME=C:...
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0answers
72 views

Calculate meter offset around decimal degree position

I have a position given in decimal degrees (x.xxxxxxxx and y.yyyyyyyy). I need to draw a rectangle around it. The center of the rectangle matches the position. The dimensions of the rectangle is given ...
2
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1answer
77 views

GeoTools ShapefileReader “Random Access not enabled” when trying to read files edited by QGIS 3.12?

I have some code where the relevant part looks like this: private static List<GisShape> shapes(String shapefile) { DataStore dataStore; try { dataStore = getDataStore(...
2
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1answer
37 views

How to retrieve the type of CRS (geographic or projected)?

Is there a way with GeoTools to know whether a CRS is geographic (in degrees) or projected (in meter) ? I have tried empirically with the following code (based on a check of the CRS unit) but I am ...
2
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0answers
82 views

Can't find geotools class in jar file/Maven dependency Android app [closed]

I am creating an Android app and using an extension from Maven dependency. This extension use geotools classes but when I compile and execute the app I have the following error: 020-04-20 21:51:52....
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0answers
145 views

Inserting X,Y to Geometry in Spring Boot and PostgreSQL?

I use @query to Insert X,Y to Geometry in PostgreSQL. @Modifying @Query(value = " insert into mypoints (name,geom) values (:name,SRID=4326;POINT(:x :y))", nativeQuery = true) @Transactional void ...
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0answers
9 views

GeoProcessor Dissolve problem with java

I used to write a dissolve method with C#, it worked well. But, when I try to rewrite it by java, the problem came. That's the code: IGpValueTableObject pObject = new GpValueTableObject(); ...
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0answers
19 views

ArcGIS SDK JAVA How to display only raster (and not basemap)

I wouldike to display only raster file on my application and not basemap. So I let the constructor of ArcGISMap empty like this : // create a map with a basemap and add it to the map view map = ...
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1answer
56 views

Problems to deploy latest version via Java installer and Tomcat8 inside OSGeoLive 13 VM [closed]

For a presentation of Geonetwork in our group I wanted to have the latest version of GN (v3.10.2) instead of the one implemented in the VM (3.2.1?) that was working flawlessly. (Awesome work to be ...
1
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1answer
32 views

Polygon not drawing correctly

I have a series of points I would like to connect into a polygon but it isn't drawing correctly, You'll see the problem. Coordinate[] xyarray = xycoords.toCoordinateArray(); ...
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1answer
116 views

Alternate of intersects ?# operator in postgres

Is there any way to find if a path is intersecting with a box in postgres without using ?# or using an alternative? I have this query below and hibernate's EntityManager is throwing an exception ...
4
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1answer
38 views

Compute the azimuth between two UTM32N points using Java GeoTools

I am using Java GeoTools to compute the azimuth between two UTM32N points, e.g. between POINT(496383,5419109) and POINT(528196,6070949). Is it possible to do so without converting the points to WGS84 ...
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1answer
52 views

Adding ortho images in Java project ArcGIS (SDK ArcGIS)

I would like to use my orthophoto in my project. I'm using ArcGIS SDK Java and the component: ArcGISMap map = new ArcGISMap(Basemap.createStreetsVector()); My orthophoto size is 4 GB (.7z)

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