Matlab GUI Documentation -- 2.2.2 Resolution

Index

2.2.2 Resolution

This menu allows you to select the "resolution" at which you wish to see a dataset displayed. The resolutions used indicate (roughly) the distance between adjacent values of latitude, in kilometers. Of course, this only applies to data lying on a rectangular grid.

NOTE: The resolution applies equally to the X and Y directions. However, the browser expresses resolution in units of distance, which (for a dataset whose locations are recorded in longitude and latitude) only remains constant in the North-South direction.

The Resolution Menu

The resolution choices for the Reynolds Weekly mean dataset are shown in the figure. This dataset is recorded on a global one-degree grid, so the bottom choice (111 km) approximately corresponds to one-degree of latitude. Through the browser, the resolutions available are the following multiples of the fundamental resolution of the dataset: 2,3,4,8,12,16,24, and 36. (This can be adjusted by editing the saved preferences file. See Section 2.3.)

The resolution corresponds directly to the "stride" value you use in requesting gridded data with DODS. (Refer to The OPeNDAP User Guide for more information about grids, stride values, and how they fit together.) Therefore, if the available resolutions are not what you need, you can use loaddods to request a different resolution. See here for more information about that program.

Tom Sgouros, December 21, 2004