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JTS User Guide

Project Structure

JTS consists of several Java modules. Each one corresponds to a separate JAR file.

The core modules are:

  • jts-core - The JTS core: geometry model, operations, algorithms, and spatial data structures
  • jts-io-common - I/O classes for open spatial formats

The following modules depend on proprietary libraries, and are not built by default:

  • jts-io-ora - Oracle reader and writer
  • jts-io-sde - SDE reader and writer

The following modules are applications and data for testing and working with JTS

  • jts-tests - The JTS XML test suite and the Test Runner application
  • jts-app -The TestBuilder GUI, for working with JTS geometry interactively

Using JTS with Maven

To include JTS in a Maven project, add a dependency block like the following:

<dependency>
    <groupId>org.locationtech.jts</groupId>
    <artifactId>jts-core</artifactId>
    <version>${jts.version}</version>
</dependency>

JTS snapshot artifacts are published to the LocationTech Maven repository. To include JTS in a project, add the following repositories to the pom.

<repositories>
  <repository>
    <id>locationtech-releases</id>
    <url>https://repo.locationtech.org/content/groups/releases</url>
    <snapshots>
      <enabled>false</enabled>
    </snapshots>
  </repository>
  <repository>
    <id>jts-snapshots</id>
    <url>https://repo.locationtech.org/content/repositories/jts-snapshots</url>
    <releases>
      <enabled>false</enabled>
    </releases>
    <snapshots>
      <enabled>true</enabled>
    </snapshots>
   </repository>
</repositories>

Using older versions of JTS with Maven

Older versions of JTS are available on Maven Central.

1.14

<dependency>
    <groupId>com.vividsolutions</groupId>
    <artifactId>jts-core</artifactId>
    <version>1.14.0</version>
</dependency>
<dependency>
    <groupId>com.vividsolutions</groupId>
    <artifactId>jts-io</artifactId>
    <version>1.14.0</version>
</dependency>

1.13

<dependency>
    <groupId>com.vividsolutions</groupId>
    <artifactId>jts</artifactId>
    <version>1.13</version>
</dependency>

Using JTS with Jigsaw

JTS uses #ModuleNameInManifest to export a module name for each of the JARs published for use as a library. In this way, you can depend on the various JTS modules in your module-info.java in the following way:

// module-info.java for project org.foo.baz

module org.foo.baz {
  requires org.locationtech.jts;            // jts-core
  requires org.locationtech.jts.io;         // jts-io-common
  requires org.locationtech.jts.io.oracle;  // jts-io-ora
  requires org.locationtech.jts.io.sde;     // jts-io-sde
}

JTS Tools

JTS includes various application tools, which are documented here.