Download OPeNDAP Software
Clients
- OPeNDAP Data Connector
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The OPeNDAP Data Connector (ODC) is a Java application that allows you to search for and retrieve data sets published by OPeNDAP data servers. The ODC is your gateway to terabytes of scientific data and imagery.
download 2.64:
Windows (38
MB), 
Unix/Linux (9.1 MB), 
Mac OS XSource Code: use Subversion (SVN) and checkout the module Java-OPeNDAP
- Matlab: loaddap 3.6.1
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Load data directly into Matlab from the command line or your own scripts. This is similar to the Matlab command line tool but preserves the hierarchy of variables present in the data source. In many ways this is a better way to retrieve data since it solves a problem that some complex data sources present; there are cases where some variables have the same names but are held in different structure variables. This version of the command line tool can handle those cases, while the older version cannot. If you're using the old command line tool, please consider switching to this version! We will support the older version for as long as we can… This version has installers for both Windows XP and OS/X that include libdap, so all you need to do is grab the installer listed here. Linux users need to get libdap separately.
23 July 2008 New installer for Widows XP/Vista. We've fixed a problem with the installer. Grab the new one from the link below or on the loaddap main page. The version number is the same since there's no change to the software at all - just some additional run-time libraries from Microsoft.
download:
Win32 , Mac PPC, i386 (aka Intel) , ix386/ix86_64/Fedora Core 8 (libdap 3.8.1 required), More…Note We have done a fair amount of work updating this client for use with the OPeNDAP/URI Matlab Ocean Data Toolbox. The toolbox is quite nice and provides interfaces for some widely used data sets and it's also only a small fraction of the total package - most of the package is the loaddap binary.
- Matlab OPeNDAP Toolbox
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This toolbox provides Graphical User Interfaces to access a number of ocean data sets via OPeNDAP as well as tools to plot the acquired data. The strength of these interfaces is that they expose complicated data sets (often multi-variable, multi-file data sets spread over a number of directories) in an easy to use interface, allowing the user to request only the subset of data -- parameters, spatial and temporal range and resolution -- relevant to his or her needs.
- IDL Client 3.6.0
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The OPeNDAP IDL Client is an IDL tool which provides access to OPeNDAP data in IDL. The IDL client now uses the OPeNDAP C API(v-1.33) in place of the OPeNDAP CPP API. This removes the problems caused by run-time incompatibilities. The idl-client code, both .PRO files and external reference modules (idl_opendap.c) have been modified to work with the new OCAPI implementation. The behavior of the new IDL client remains consistent with previous versions of the client code. The code base for this client has been named idl-client which differentiates it from the previous client that was named idl-cmdln.
download:
Win32 ,
Mac PPC/i386 ,
ix386/ix86_64/Fedora Core 4,
ix386/RedHat
Enterprise 3, More… - Matlab Command Line Tool 3.4.4
- This is the predecessor to the loaddap client; please use the new client!
- Matlab GUI 6.0.1
- We are looking for someone in the user community to support this client. If you're interested, please let us know!
- Clients from other groups
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Be sure to look at the growing list of DAP 2.0 compatible clients developed by other groups. If you know of a client that's not on our list, please tell us about it!
Software development kits
- DAP++ 3.8.2
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Version 3.8.2 contains a fixed HTTP client-side cache, animproved libdap installer for win32 (which was included in the libdap 3.8.1 binary release for winXP but not the corresponding source release). It also contans a new interface for using server-side ancillary data: See the Ancillary class.
23 July 2008 New installer for Widows XP/Vista. We've fixed a problem with the installer. Grab the new one from the link below or on the libdap main page. The version number is the same since there's no change to the software at all - just some additional run-time libraries from Microsoft.
download:
Windows (sig),
i386/Linux/Fedora
Core 8, x86_64/Linux/Fedora Core 8, Mac OS/X Intel (sig),
More… - OPeNDAP C API (Ocapi) 1.4.2
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The OPeNDAP C API (OCAPI) is an OPeNDAP DAP 2.0 client implementation written in generic C. The goal of this implementation is to provide a C code base that can be compiled easily on any platform without the complexities found in C++. Version 1.4.2 is a source release plus binaries. This release contains support for proxies-host, port, username, and passwords. Support for http authentication-username and passwords, cookies, compression, and SSL. Added functionality to read and write .dodsrc files and parsing capabilities for the proxy server in .dodsrc. Added tests for proxies, http authentication and SSL. Added support to parse a URL with username and password. Fixed Curl calls so compatible with older versions of Curl. Fixed an errant call to parseURL. And deleted extraneous code.
download:
- netCDF Client Library 3.7.3.
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This 'client library' can be used to enable any application that uses netCDF to read from DAP servers. A number of widely used applications link with this library.
This updated release includes bug fixes and binaries for linux.
download:
x86_64/Linux/Fedora Core 8,
i386/Linux/Fedora Core 8,
More… - Java DAP 1.1.7
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The Java DAP class library implements DAP 2.0. It is completely interoperable with the DAP++ library above, although it was written by developers at JPL and OSU. The library contains an implementation of the DAP 2.0 plus server specific classes. This software supports building servlets (the DAP++ library's server-side supports CGIs).
Note that version 1.1.7 contains some important organizational changes. Each of the distribution files will need to be unpacked (using jar) prior to use.
If you're upgrading from an older version, be sure to read the README file.
download: README, Binary (jar file) (426 KB), Source (jar file) (2.0 MB) Documentation (jar file) (1.4 MB)
- Development Kits from other groups
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There are several other Development Kits that provide APIs different from the one we designed and implemented in the DAP++ and Java DAP class libraries. Some are object oriented and some are functional. If you know of a SDK that's not on our list, please tell us about it!
Servers
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Hyrax is the OPeNDAP 4 Data Server.
Version 1.4.2. This release is a bug fix release only, there are no new features in the server. A problem with the hdf4 handler was fixed but this fix requires the latest libdap which in turn requires the latest bes which means all of the handlers must be recompiled (the freeform sources require a slight change), hence a new release of Hyrax.
Hyrax uses a different design than our previous server and is far more secure than the older, CGI-based, data server.
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- Comprehensive list of Data Handlers
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We've just released a major update to the HDF5 handler. Once we've done a security review it will be available from the Hyrax page page in binary and source form. Until then we have to classify it as beta software and can offer it in source form only. If you have any questions, please don't hesitate to contact us!
OPeNDAP maintains, at varying levels, many different data handlers which work with the Hyrax (and CGI-based) data server. Some are widely used and we coordinate their release with the server packages. You can download those handlers from the Hyrax or CGI-based servers' pages. This page provides a listing of all the data handlers we provide, including those for which we provide binary builds, those that are released as source code only and those that are available from our source code repository.
If you have questions about any of the handlers, or an idea for a new handler, please contact us!
- Server3 (aka CGI Server Base Software) 3.8.2
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The version 3.8.2 release includes no new features for the CGI-based data server, but the security patch posted on 27 April 2007 has been applied, other fixes have been made and the Usage, ASCII and WWW form interface handlers have been updated for the latest version of libdap.
- SQL Database Server and the Test Server 1.1.7
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Serve data stored in a Relational Database. After installing the Web archive file in your servlet engine see the default web page for the dods servlet (http://your.host.name/dods) for configuration information, developers information, and API documentation.
As a bonus, the Relational Database Server also contains the Test Server. Use the Test Server to build data sources for use in testing your DAP-compatible client software.
download: Web Archive file (1.4 MB)
- Servers developed by other groups
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There are several other data servers which use the DAP. The GrADS-DODS Server (GDS) provides subsetting and analysis services for any GrADS-readable data set. The Live Access Server (LAS) provides an easy way to set up a data portal for users that can't, or don't want to, use an analysis application such as MATLab or Ferret.
If you know of a server that's not on our list, please tell us about it!
OPeNDAP's Public Key
OPeNDAP's Public Key is available here.
We now (November 2007) sign all of our software releases using gpg and a key created just for this purpose. The public key is bound to the email address security at opendap.org. The address is 'real' in the sense that email sent there will be answered, although we ask that support questions be sent to the support at opendap.org address instead.
To verify a particular software package using its digital signature:
- Import the security at opendap.org public key into your key ring (see the gpg documentation for help on that);
- Download both the package and the .sig signature file and put them in the same directory; and
- Run gpg --verify <signature file name> in the directory with those files.
Software Archive
The HTTP archive holds just about every piece of software we have ever released. Each release is held in a separate directory. Beta and final versions for each release are within those directories. Below are shortcuts to specific parts of the archive for people that want all of the source code without navigating through the pages specific to each of the clients, servers, et cetera.
- Source, Binary, ODC.
- Old DODS releases
- By Release
Nightly Builds
We run a suite of builds every night. Each nightly build is created using code checked out from SVN. Mostly we use the nightly build process on our current release, although some other software, such as the current development code, is also built.You can see the status of the most recent nightly build, although we do not run nightly builds on all of our platforms.
Subversion (SVN)
Another way to get source code is to use anonymous access to our SVN repository. In Spring of 2005 we switched from CVS to SVN. Our CVS repository required a login for read access as well as write access. Our SVN repository provides public read-only access without a password or login. You'll need an account for write-enabled access; email webmaster at opendap.org for more information. There are several ways that you can get software using svn.
- You can use a web browser; visit the URL http://scm.opendap.org:8090/svn/. This is a good way to read over source code if you have specific questions about how a particular function has been implemented. Note that we're currently reorganizing the sources so there is some duplication in the repository. Email opendap-tech if you have questions about what's under active development and what's not.
- You can use a web browser to view our Trac web site, which provides a browser-based interface to our svn repository.
- You can use a variety of subversion clients to read from the repository. Generally, you will want to check out source code from the repository's 'trunk' using the URL "http://scm.opendap.org:8090/svn/trunk/." There are many subversion clients available and many plugins for IDEs.
Where to find specific software in the repository
There are many projects in our subversion repository, here are some: