WCPS-Manual / encodedCoverageExpr
The encodedCoverageExpr element specifies encoding of a coverage-valued request result by means of a data format and possible extra encoding parameters.
Data format encodings should, to the largest extent possible, materialise the coverage's metadata. A service may store further information as part of the encoding.
For a georeferenced coverage, a GeoTIFF result file should contain the coverage's geo coordinate and resolution information.
Note: For materialization of the coverage grid cell values the coverage's image CRS shall be used by default. See crsTransformExpr for controlling coverage grid cell values via other CRSs.
C be a coverageExpr
f be a string
for any byteString S
where S is one of
with extraParams being a string enclosed in double quotes ('"')
S is defined as that byte string which encodes C into the data format specified by formatName and the optional extraParams. Syntax and semantics of the extraParams are not specified in this standard.
NOTE Some format encodings may lead to a loss of information.
NOTE The extraParams are data format and implementation dependent.
The following expression specifies retrieval of coverage C encoded in HDF-EOS:
encode( C, "hdf-eos" )
A WCPS implementation may encode a JPEG quality factor of 50% as the string ".50".
Usage of formats shall adhere to the regulations set forth in WCS .