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https://issues.apache.org/jira/browse/SIS-449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux closed SIS-449.
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> Extension to CF-conventions for bands in a netCDF variable
> ----------------------------------------------------------
>
> Key: SIS-449
> URL: https://issues.apache.org/jira/browse/SIS-449
> Project: Spatial Information Systems
> Issue Type: Improvement
> Components: Storage
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Priority: Major
> Fix For: 1.0
>
>
> The _Global Change Observation Mission - Water (GCOM-W)_ files have content
> like below (simplified):
> {noformat}
> 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"
> {noformat}
> 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.
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