Hi Jonathan, Currently the safest way would be to loop over time with something like this v_wind_raster=raster(v_wind_file,zvar='vwnd',time=i) and write these to another format, and then make a RasterStack.
But that's awful. I'll write memory-safer functions for netCDF sometime this week (i.e. same functions and handling as for other formats). This has been on the to-do list for a while, but you are the first to (rightfully) complain. Robert On Mon, Jun 7, 2010 at 12:41 PM, Jonathan Greenberg <greenb...@ucdavis.edu> wrote: > r-sig-geo'ers: > > Next in my barrage of questions -- what would be a memory-safe way of > dealing with netCDF files via raster()? I understand that raster > loads the entire netCDF band/file into memory when using raster(): > > u_wind_rasters=stack(u_wind_file,zvar='uwnd') > > or > > v_wind_raster=raster(v_wind_file,zvar='vwnd',time=1) > > where u_wind_file and v_wind_file are .nc files. > > Would it make sense to pre-convert these to something "safer"? Is > there a memory-safe way of converting these to some multi-band image > within R? > > --j > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
