Apache {{% SIS %}} {{% version %}} is now available. See the [release notes](release-notes/{{% version %}}.html) for a list of changes since the previous version.
Apache {{% SIS %}} releases are available under the Apache License, Version 2.0. See the NOTICE file contained in each release artifact for applicable copyright attribution notices.
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Apache {{% SIS %}} is distributed in the form of Java source code in a multi-modules Apache Maven project. For convenience, an aggregated Javadoc and pre-compiled JAR files are available as separated downloads. The precompiled JAR files contain most modules and mandatory dependencies. Optional dependencies (JAXB implementation, UCAR netCDF library, Amazon SDK) are not included.
All downloads can be verified using the Apache {{% SIS %}} code signing KEYS. The PGP (Pretty Good Privacy) signatures can be verified using any OpenPGP implementation, for example GPG (GNU Privacy Guard). First download the KEYS file and the .asc signature files for the relevant release packages. Make sure you get these files from the main distribution directory, rather than from a mirror. Then verify the signatures using the following (replace src by bin or doc if needed):
Using GNU Privacy Guard:
{{< highlight bash >}} gpg --import KEYS gpg --verify apache-sis-{{% version %}}-src.zip.asc {{< / highlight >}}
Using PGP version 6:
{{< highlight bash >}} pgp -ka KEYS pgp apache-sis-{{% version %}}-src.zip.asc {{< / highlight >}}
Using PGP version 5:
{{< highlight bash >}} pgpk -a KEYS pgpv apache-sis-{{% version %}}-src.zip.asc {{< / highlight >}}
An easy approach to integrate Apache {{% SIS %}} into a Java project uses the Apache Maven dependency management tool to automatically obtain the required Java Archives (JAR) files from the network. Below are examples of declarations in a pom.xml file for building a project with a SIS core module.
{{< highlight xml >}} <sis.version>{{% version %}}</sis.version>
The sis-referencing module in above example can be replaced by one or many of the following modules:
The [EPSG geodetic dataset][EPSG] is optional but strongly recommended. The EPSG dataset is a de-facto standard providing thousands of Coordinate Reference System (CRS) definitions together with information about how to perform coordinate operations, their accuracies and their domains of validity. However usage of EPSG dataset requires acceptation of [EPSG terms of use][EPSG-ToU]. If you accept those terms of use, then the following dependency can be added:
{{< highlight xml >}} org.apache.sis.non-free sis-embedded-data ${sis.version} runtime {{< / highlight >}}
Above dependency uses a read-only embedded Derby database. Note that the need to uncompress the sis-embedded-data.jar file slows down CRS.forCode(…) and CRS.findCoordinateOperation(…) method executions. For better flexibility and performance, it is also possible to use an uncompressed and writable Derby database, or to install the EPSG dataset on HSQL or PostgreSQL. See How to use EPSG geodetic dataset page for more information.
[src]: http://www.apache.org/dyn/closer.cgi/sis/{{% version %}}/apache-sis-{{% version %}}-src.zip [doc]: http://www.apache.org/dyn/closer.cgi/sis/{{% version %}}/apache-sis-{{% version %}}-doc.zip [bin]: http://www.apache.org/dyn/closer.cgi/sis/{{% version %}}/apache-sis-{{% version %}}-bin.zip [src-PGP]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-src.zip.asc [doc-PGP]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-doc.zip.asc [bin-PGP]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-bin.zip.asc [src-SHA]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-src.zip.sha512 [doc-SHA]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-doc.zip.sha512 [bin-SHA]: https://www.apache.org/dist/sis/{{% version %}}/apache-sis-{{% version %}}-bin.zip.sha512 [EPSG]: https://epsg.org/ [EPSG-ToU]: https://epsg.org/terms-of-use.html