require "numru/netcdf" include NumRu file = NetCDF.create("test.nc") nx, ny = 10, 5 file.def_dim("x",nx) file.def_dim("y",ny) file.def_dim("t",0) require "date" file.put_att("history","created by #{$0} #{Date.today}") x = file.def_var("x","sfloat",["x"]) y = file.def_var("y","sfloat",["y"]) t = file.def_var("t","sfloat",["t"]) v1 = file.def_var("v1","sfloat",["x","y"]) v1.put_att("long_name","test 1") v1.put_att("units","1") v2 = file.def_var("v2","sfloat",["x","y","t"]) v2.put_att("long_name","test 2") v2.put_att("units","1") file.enddef x.put( NArray.float(nx).indgen! ) y.put( NArray.float(ny).indgen! ) z = NArray.float(nx,ny).indgen!*0.1 v1.put(z) v1.put( NArray.float(nx).add!(20), "start"=>[0,2],"end"=>[-1,2]) v2.put(z, "start"=>[0,0,0],"end"=>[-1,-1,0]) t.put( 0, "index"=>[0]) v2.put(-z, "start"=>[0,0,1],"end"=>[-1,-1,1]) t.put( 1, "index"=>[1]) file.close print `ncdump test.nc`