| Web Guide : Geospatial Constraint |
|
|
The geospatial constraint panel allows you to interactively specify a geographic and/or a time constraint for your search. It includes a user-editable gazetteer.
|
|
| Using the Geospatial Panel |
|
|
The geo-temporal contraint panel looks like this:
If you want to include the entire world you can click the global button or the clear button (in which case no geographic constraint will be applied). To select a region by hand drag the mouse over the area of the world you wish to do the search in. Note that you can use the border buttons marked ">" and "<" to scroll the entire map left and right. For an exact latitude/longitude area enter the coordinates in the four boxes to the right. The map will update to show the region you have specified. |
|
| Using the Gazetteer |
|
|
The gazetteer allows you to select a region of the earth by name. This functionality in the lower portion of the geo-temporal panel.
Select a feature type (land, body of water, mountain etc) from the box in the lower left. The defined areas for that feature type will appear in the list next to it. When you select one of these the map and coordinates will be updated to reflect your selection. The third list allows you to add your own regions. When you have defined a region in the map above you can click the "Add" button to add the region to the gazetteer. You will be prompted for a title for the region. (Unix users note that the write permissions on the gazetteer.txt file must be ok). You can also edit the gazetteer.txt file directly. It has been deliberately designed in a human-readable format so you can edit it and create your own entries. This file is located in the ODC home directory (the same place odc.jar is located). |
|
OPeNDAP Data Connector Web Guide - Search ·
Revised 28 May 2004 ·
|
