Workshops & Presentations

One-day Course on Server Functions & Clients

On 8 May 2012 we presented a one-day course on server functions at NASA's Langely Research Center in Newport New, VA. The course covered how server functions work and how to write them. The class was built around a virtual machine running openSUSE Linux 12.1 that uses Vmware Fusion, Workstation or Player. With the virtual machine you get a complete development environment including Eclipse and a pre-compiled copy of Hyrax 1.8.2 - all ready to run.

The Data Access Protocol and OGC abstract specifications for Architecture and Coverages

Two presentations covering the DAP2 as it relates to the Open Geospatial Consortium (OGC). The first presentation covers the DAP2 data model and shows how it realtes to the OGC Abstract specification for Architecture. The second presentation relates the DAP2 data model to the OGC abstract specifaction for Coverages.

Presented at the 2012 OGC Technical Committee meeting in Austin, TX

ESIP GIS Cluster Presentation on OPeNDAP's WCS Service

This short set of four slides is a brief introduction to the WCS interface (aka Service End Point) that we developed as part work funded by NOAA under the IOOS program. The interface supports version 1.1.2 of teh WCS specification and uses semantic web technology to implement an extensible and scable framework for metadata translation.

Using OPeNDAP Clients - eResearch 2011 1/2 day workshop

These slides were presented at the eResearch 2011 meeting in Melbourne, Australia. The workshop covered both using a web browser as an OPeNDAP client as well as application-clients like Matlab and other tolls. Also covered are some issues relating to clients like configuration of the .dodsrc file to enable certificate-based authentication. There are four sets of slides included here that were used for this 1/2 day workshop.

Serving unstructured grids using OPeNDAP: ECM 2011

The Paper: "Serving unstructured grids using OPeNDAP: Using server-side operations to subset and subsample data", by Christopher Barker and James Gallagher, was presented on Nov. 8th 2011 at the Twelfth International Conference on Estuarine and Coastal Modeling in St. Augustine, Florida. The paper described background and use-cases for accessing unstructured grid model data and work OPeNDAP is doing on developing server-side processing to support community needs.

Presentations for the OPeNDAP/NOAA-PMEL Workshop

Presentations for the OPeNDAP/NOAA-PMEL Workshop held at the Stennis Space Center, 29-31 September 2004.
These PowerPoint slides cover the ODC, Matlab client, Server installation (including configuration of the Aggregation server developed by Unidata), construction of THREDDS catalogs, Using Ferret, What is FDS and setup of LAS. In addition, the workshop started with an overview of OPeNDAP and the evolution of networked data systems for science.

An overview of DODS

An overview of DODS
Based on presentations made at the April 1995 TOS meeting in Newport RI. and the Nov. 1995 SISIC meeting in Washington, D.C. Updated with version 2 information not presented at either of those meetings. The original overview presentation describes version 1.x of DODS.

OPeNDAP/Hyrax Interfaces

OPeNDAP/Hyrax Interfaces
This presentation covers the Hyrax server's various interfaces and was given at the Ocean Observatories Initiative (OOI) Workshop at UCSD on June 30th 2008. The presentation focuses on extending Hyrax so that it can be adapted to different systems by adding new functions (aka modules) and protocol handlers to the server.

NVODS and OPeNDAP (a.k.a. DODS) an Overview

NVODS and OPeNDAP (a.k.a. DODS) an Overview
Presented to TEDS Development group at Antheon Corporation in Newport RI on 7-8 Feb, 2002

Accessing Data using the Distributed Oceanographic Data System

Accessing Data using the Distributed Oceanographic Data System
A general discussion of the DODS data delivery design (SIGNIDR, 3/95).

Data Model Evolution in the Data Access Protocol

Data Model Evolution in the Data Access Protocol, James Gallagher, John Caron, Dennis Hiembigner, Hyo-Kyung Lee, Rikki McQueary, Russ Rew, Muqun Yang
Poster presented at the Summer ESIP Federation meeting, Santa Barbara, CA, July 2009.

OPeNDAP Workshops at APAC and the Australian BOM, Oct. 2007

OPeNDAP Workshops at APAC and the Australian BOM, Oct. 2007.
Presentations and other materials from the Australian Partnership for Advanced Computing (APAC) and Bureau of Meteorology (BoM) OPeNDAP Workshops. These workshops focused on system administrator's and software developer's tasks and the Hyrax data server. We also presented information on clients and developer's tools for clients.

DODS Technical Overview

DODS Technical Overview
Presented to TEDS Development group at Antheon Corporation in Newport RI on 7-8 Feb, 2002

Merging the Data Models of NetCDF and DAP: Design Choices and Benefits

Merging the Data Models of NetCDF and DAP: Design Choices and Benefits, James Gallagher, Russ Rew, Rikki McQueary, Dennis Heimbigner and Ed Hartnett
Poster presented at the Fall 2008 AGU meeting

OPeNDAP Developer's Workshop, Feb 2007

OPeNDAP Developer's Workshop, Feb 2007.
Presentations by OPeNDAP and developers and users from many different organizations.

The Distributed Oceanographic Data System: Requirements for Data Analysis Applications

The Distributed Oceanographic Data System: Requirements for Data Analysis Applications
Presented at the Twenty-sixth International Symposium on Remote sensing of Environment, on 25 March 1996.

Poster/Handout: Building a High Performance Data Server for the DAP Using Existing Software

Poster/Handout: Building a High Performance Data Server for the DAP Using Existing Software presented at the Winter 2007 ESIP meeting in Portland Oregon.
This is similar to the poster presented at the AGU meeting a few weeks earlier. However, the format is slightly different and the poster prints to regular paper a little more cleanly. Also available as a PDF file.

NVODS ExComm meeting

NVODS ExComm meeting
Presentation at the NVODS ExComm meeting, August 2001.

Using Community-Driven Metadata Conventions with On-Line Data

Using Community-Driven Metadata Conventions with On-Line Data presented at the Fall 2006 AGU meeting.
This talk is split between observations about community-based metadata standards and a discussion of Server4's features. The features were chosen in part to strengthen the server's support for those types of standards and conventions.

The DODS-NOPP National Workshop

The DODS-NOPP National Workshop
Presentation at the NVODS National meeting, May 2001.

Infusing semantic web into operational data systems: real application experience

Infusing semantic web into operational data systems: real application experience, , Patrick West (pwest@ucar.edu), Peter Fox (pfox@cs.rpi.edu), Deborah McGuinness, Stephan Zednik
Poster presented at the Fall 2008 AGU meeting

OPeNDAP's Server4: Building a High Performance Data Server for the DAP Using Existing Software

Poster: "OPeNDAP's Server4: Building a High Performance Data Server for the DAP Using Existing Software" From the Fall 2006 AGU meeting in San Francisco.

This poster describes the design of OPeNDAP's new Data Server. This is the powerpoint file used to make the poster, so it's large. However, it will print well, so it's worth a look if you missed the meeting. The same poster is available as a PDF file.

Oceanology International 2001

Oceanology International 2001
Possibilities of an Interoperable Data System: The DODS Model -- A presentation made at the Oceanology International Americas Symposium.

HDF5-OPeNDAP Project Facilitates se of HDF-EOS Data to track Beijing Air Quality

HDF5-OPeNDAP Project Facilitates se of HDF-EOS Data to track Beijing Air Quality
This one-page PDF file describes how HDF5 data served using Hyrax has been used to asses and track changes in the air quality of Beijing.

DODS Regional Workshops 2000-2001

DODS Regional Workshops 2000-2001
Summary of the regional workshops.

Globally Distributed Data and the Issues Faced in Building Such a System

Globally Distributed Data and the Issues Faced in Building Such a System, James Gallagher
Presentation at the UNESCO IOC/IODE Third Workshop on Ocean Modeling, Ostend, Belgium, Oct. 19, 2009.

ESIP Federation Hyrax Workshop

ESIP Federation Hyrax Workshop
Presentations and other materials for a Hyrax installation and customization workshop presented at the July 2008 ESIP Federation meeting. The workshop will be presented on the 15th of July.

Presentations for the OPeNDAP Data Discovery Workshop

Presentations for the OPeNDAP Data Discovery Workshop held at UCAR, 15-16 May 2006.
This page holds presentations (PowerPoint and PDF files) given at the workshop, along with use cases written as a result of discussions. Also included is a report. Under constructions as of 30 May 2006.

Report on the First Workshop for the Distributed Oceanographic Data System

This is the report from the first workshop (Sept 29 - Oct 1 1993) held when be began the development work that has ultimately lead to the formation of OPeNDAP (and DAP2, DAP4, Hyrax, et cetera). It's an interesting document from several persepectives, particularly for the things that have remained largely constant for nearly twenty years in the often fast-changing world of the web. Note that teh original design did not make use of the web infrastructure - that was not folded into the design until 1994, when NCSA's Mosaic browser really gained traction.

Report on the First Workshop for DODS, 29 Sept. to 1 Oct. 1993

Report on the First Workshop for DODS, 29 Sept. to 1 Oct. 1993
Available as a PostScript file.