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OPeNDAP Subsetter

Capabilities of the OPeNDAP Subsetter available to the Simple Subsetting Wizard

The OPeNDAP Subsetter is capable of subsetting gridded files spatially and/or by variables. The subsetting is performed by an OPeNDAP (Open-source Project for a Network Data Access Protocol) server. (For information about OPeNDAP, see the OPeNDAP Quick Start Guide).

Spatial subsetting will be performed only if a Spatial Bounding Box was specified in the search criteria.

Variable subsetting will be performed only if one or more variables are selected, but if all variables are selected, then effectively no variable subsetting will be performed.

When you Subset Selected Data Sets, once the subset request is completed for a selected data set, a list of URLs for downloading subsetted granules from that data set can be viewed in either HTML or Plain Text format.

When viewed in HTML format, each subsetted granule can be downloaded by clicking on its link, or they can all be downloaded by using a browser-based download manager. When viewed in Plain Text format, the list of URLs can be copied, saved in a file on your local workstation, and used with a Unix command line tool such as wget to download all of the subsetted granules. You can also feed the URLs to an OPeNDAP-enabled data analysis package like Ferret or GrADS.

Details on how to download the subsetted granules can be found in these instructions.

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Last updated: Jun 20, 2011 01:12 PM ET