The regridding operation (g3Regrid) has been implemented for services which require datasets with the same resolution. Input parameters:
Gridded Data Output Description:
Data grid of values at selected resolution Output Parameters:
Same as input File Type:
Input: HDF4 Output: HDF4 Sub-definitions:
- Grid: a two-dimensional data structure
- Latitude: vertical dimension of grid
- Longitude: horizontal dimension of grid
- Pixel: grid element containing data value
- Subset: a section of the grid reduced in the vertical or
horizontal dimension, or both
The regridding operation initiates by obtaining the dataset information provided by previous operations of the requested service. It checks all of the dataset spatial resolutions, and if the spatial resolution of all the datasets is the same, regridding is not required and the computation proceeds to the next operation.
If the spatial resolutions differ, then the spatial resolution of each dataset is regridded to a common spatial resolution, which will be the coarsest spatial resolution among all the datasets. The dataset possessing the coarsest spatial resolution does not require regridding. Algorithm Details
The regridding operation currently implements the Box Averaging algorithm provided by GrADS as the regridding function.