netcdf-c/nc_test4/ref_multi.cdl

netcdf multifilter {
dimensions:
	dim0 = 4 ;
	dim1 = 4 ;
	dim2 = 4 ;
	dim3 = 4 ;
variables:
	float var(dim0, dim1, dim2, dim3) ;
		var:_Storage = "chunked" ;
		var:_ChunkSizes = 4, 4, 4, 4 ;
		var:_Filter = "307,9|1,2|40000" ;
		var:_NoFill = "true" ;

// global attributes:
		:_Format = "netCDF-4" ;
}
Add support for multiple filters per variable. re: https://github.com/Unidata/netcdf-c/issues/1584 Support has been added for multiple filters per variable. This affects a number of components in netcdf. The new APIs are documented in NUG/filters.md. The primary changes are: * A set of new functions are provided (see __include/netcdf_filter.h__). - Obtain a list of the filters associated with a variable - Obtain the parameters for a specific filter. * The existing __nc_inq_var_filter__ function now returns info about the first defined filter. * The utilities (ncgen, ncdump, and nccopy) now support an extended format for specifying a sequence of filters. The general form is __<filter>\|<filter>..._. * The ncdump _Filter attribute now dumps a list of all the filters associated with a variable using the above new format. * Filter specifications can now use a filter name instead of number for filters known to the netcdf library, which in turn is taken from the HDF5 filter registration page. * New errors are defined: NC_EFILTER and NC_ENOFILTER. The latter is returned if an attempt is made to access an unknown filter. * Internally, the dispatch table has been extended to add a function to handle all of the filter functions. * New, filter-related, tests were added to nc_test4. * A new plugin was added to the plugins directory to help with testing. Notes: 1. The shuffle and fletcher32 filters are not part of the multifilter system. Misc. changes: 1. A debug module was added to libhdf5 to help catch error locations. 2020-02-17 03:59:33 +08:00			`netcdf multifilter {`
			`dimensions:`
			`dim0 = 4 ;`
			`dim1 = 4 ;`
			`dim2 = 4 ;`
			`dim3 = 4 ;`
			`variables:`
			`float var(dim0, dim1, dim2, dim3) ;`
			`var:_Storage = "chunked" ;`
			`var:_ChunkSizes = 4, 4, 4, 4 ;`
			`var:_Filter = "307,9\|1,2\|40000" ;`
			`var:_NoFill = "true" ;`

			`// global attributes:`
			`:_Format = "netCDF-4" ;`
			`}`