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Importing data for a subgrid currently only works for regular grids from CF compliant NetCDF files using the NETCDF-CF_GRID as in the above example. For NetCDF grids that are not fully compliant with the CF conventions, the NetcdfGridDataset can be used, which requires that the complete grid extent is imported. |
This section only applies to the import of grid data. For data with a regular grid that is imported from a NetCDF file, it is in most cases not required to have a grid definition in the grids.xml configuration file. Because for regular grids the import reads the grid definition from the NetCDF file and stores the grid definition directly in the datastore of Delft-FEWS. If for the imported data there is no grid definition present in the grids.xml configuration file, then data for the entire grid is imported.
To import data for only part of the original grid, it is required to specify a grid definition in the grids.xml configuration file. The grid definition defines the part of the grid that needs to be imported. In other words the grid definition defines a subgrid of the original grid. In this case only data for the configured subgrid is downloaded and imported, the data for the rest of the original grid is ignored. The following restrictions apply:
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For importing data from a password protected OPeNDAP server, it is required to configure a valid username and password for accessing the server. This can be done by adding the user and password elements (see Import Module configuration options#user) to the import configuration, just after the serverUrl element.
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Example of an import configuration with user and password elements:
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