[ https://issues.apache.org/jira/browse/SIS-449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Martin Desruisseaux closed SIS-449. ----------------------------------- > 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. -- This message was sent by Atlassian Jira (v8.3.4#803005)