I am working with some NetCDF data which has multidimensional variables. - As far as I'm aware, the fields are not mandatory. - Each variable will have the same fields/attributes. - Each variable represents a measurement of the atmosphere, in time & space. Level represents a pressure level (like a layer of an onion -- a thick layer). For example, a variable called *SO2* (Sulphur Dioxide) may be *4-D*: Time, Level (pressure), latitude, longitude. I have about 14 variables that I need to store. **Data retrieval tendencies** Now, I'm going to need to query this data and ask questions like: - Give me all the rows for variable *SO2* that fall between latitude *X* and longitude *Y* at time *T* and level *L*. - What is the average temperature for time *T* at level *L*? - etc... **Current considerations** I could let each row in my DB be an observation and have the columns: type, lat, long, time, level, value. Or, perhaps create a table for each kind of variable and have the columns: lat, long, time, level, value. I'm not sure which will be more appropriate, or whether there is a better option, so I'd appreciate some advice.

I have already set the environment in windows SET postgis.gdal_enabled_drivers = 'ENABLE_ALL'; Even I tried by adding following in environment path- POSTGIS_GDAL_ENABLED_DRIVERS=ENABLE_ALL But still I am getting error: > ERROR: rt_raster_to_gdal: Could not load the output GDAL driver SQL The query I am running is SELECT ST_AsGDALRaster(rast, 'GTiff') As rastjpg FROM myRaster WHERE rid=1; How to remove this issue?

I am using the following command to add constraints to one of the raster image in PostGIS-2.1.3 (PostgreSQL-9.1.14). ALTER TABLE schema1.table1 ADD CONSTRAINT enforce_scalex_rast unique (rast); But getting the following errors: ERROR: data type raster has no default operator class for access method "btree" HINT: You must specify an operator class for the index or define a default operator class for the data type. Kindly someone help me to fix this error up. I have no basic idea about the operator classes. Thx. Zia.