Description
The Global Change Observation Mission - Water (GCOM-W) files have content like below (simplified):
variables:
short "Geophysical Data"(1976, 243, 2)
float SCALE FACTOR = 0.01
string UNIT = "C"
float "Latitude of Observation Point"(1976, 243)
string UNIT = "deg"
float "Longitude of Observation Point"(1976, 243)
string UNIT = "deg"
The "Geophysical data" variable is of size 1976 × 243 × 2, but the last dimension of size 2 is not defined anywhere in the file and does not correspond to any variable. We can build a Coordinate Reference System (CRS) with latitude and longitude axes, but we can not include in that CRS the third dimension since we don't know if it should be a depth, a time or other kind of axis. That third dimensions could be interpreted as bands however.
We take the assumption that this dimension of size 2 means 2 bands. We support multi-banded images for other formats (e.g. GeoTIFF), but multi-bands in a NetCDF file is more unusual since a common practice is to use different variables instead (actually the netCDF format does not have any explicit concept of band). This task is about upgrading the netCDF reader for interpreting the dimensions that are not Coordinate Reference System dimensions as bands.
Attachments
Issue Links
- is depended upon by
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SIS-443 Give access to netCDF raster data as GridCoverage
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- Closed
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