Index
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Go backward to 1.2 What is the OPeNDAP Matlab GUI?
Go up to 1.2 What is the OPeNDAP Matlab GUI? Go forward to 1.2.2 Querying a Dataset |
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To set up a data request, you must select the variable and dataset you wish to examine. Select these from the variable and dataset lists that appear when you start the browser. If you've closed those windows, you can recall them with the Data,Show Data Bookmarks button.
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The
Variable and Dataset menus depend on each other.
Once you've selected something from one menu, the other menu changes
to display the corresponding entries. For example, if you are
interested in temperatures, you can select it in the
Variables menu. After this, the datasets that contain
temperature data will be highlighted (displayed with bold font) in the
Bookmarks menu. Once these have been selected, the spatial
and time ranges of the selected dataset are indicated on the display
map. You can use the Zoom button to examine any of the data
displays more closely.
You can also begin your data selection by selecting the region, time, or depth you wish to examine. The Datasets and Variable menus will be updated to show only datasets that contain data in those regions.
The OPeNDAP Matlab GUI uses locally-cached archives of "metadata" to describe datasets which may be stored on any machine connected to the Internet. This allows the OPeNDAP Matlab GUI to download its data in a consistent set of units, allowing comparisons among datasets. You can use the Data,Update Bookmarks button to update the local archives with any new datasets or changes in existing datasets.