What is DChart?
The Dapper Data Viewer (aka DChart) allows you to visualize
and download in-situ oceanographic or atmospheric data from
file or OpenDap
Features include an interactive map that is draggable, an in-situ
allows you to select data stations, and a plot window that allows
you to plot data from one or more stations. Three plot types
are supported (profile, property-property, and time series)
and users can interact directly with the plot to pan or zoom
in and out. Click here to try
What problem does DChart address?
Millions of in-situ ocean observations are now available to scientists through the OPeNDAP network protocol. However, access to this data is limited because there are few Web applications that support the in-situ OPeNDAP protocol.
What is the solution?
DChart is a Web application that takes advantage of this technology to allow interactive selection, browsing, plotting and downloading of in-situ observations from Dapper, an in-situ OPeNDAP server. Users have access to the functionality of a desktop application in a Web browser without having to download any plugins or applets.
Screen snapshot of DChart Web Page accessing Argo profile data.
Screen snapshot of DChart Web Page accessing National Data Buoy Center time series data.
Three plot types are supported (profile, property-property, and time series) and users can interact directly with the plot to pan or zoom in and out.
- The application communicates with the Web server asynchronously:
(figure from Adaptive Path)
DChart uses remote scripting technology to provide web access to in-situ oceanographic or atmospheric data. Users have access to the functionality of a desktop application in a Web browser without having to download any plugins or applets.
Demonstration, references and more information: