What's Ruby-NuSDaS

This has two kinds of methods.
One is an one-to-one wrap method for NuSDaS C library. The methods are defined as class method of NumRu::NuSDaS To use these methods, you have to set NuSDaS root directory to environmental variable 'NUSDASnn', or move to the directory having NuSDaS root directory named as 'NUSDASnn'.
The other is original. The methods are defined as instance methods of NumRu::NuSDaS or NumRu::NuSDaSVar.

Download

• Released version
ruby-nusdas-0.9.1.tar.gz (28 October 2014)
• Git repository
ruby-nusdas.git


% git clone http://ruby.gfd-dennou.org/products/ruby-nusdas/ruby-nusdas.git

Document

Rdoc document is here.

Example

• read data

require "numru/nusdas"
file = NumRu::NuSDaS.open("fcst_p.nus")
vnames = file.var_names #=> ["U", "Usrf", "V", "Vsrf", "T", "Tsrf", ...]
t = file.var("T")
dnames = t.dim_names #=> ["lon", "lat", "pressure", "validtime"]
lon = t.dim("lon")
lon.val(:full)
t[true,true,0,0].get
  

• draw tone plot with GPhys

require "numru/ggraph"
include NumRu
t = GPhys::IO.open("fcst_p.nus","T")
DCL.gropn(1)
DCL.sglset("lcntl",false)
GGraph.set_fig("itr"=>10)
GGraph.set_map("coast_japan"=>true)
GGraph.tone(gphys)
DCL.grcls
  

• convert to NetCDF

require "numru/gphys"
include NumRu
in_file = NuSDaS.open("fcst_p.nus")
out_file = NetCDF.create(fcst_p.nc")
GPhys::IO.var_names(in_file).each do |vname|
  gphys = GPhys::IO.open(in_file, vname)
  GPhys::IO.write(out_file, gphys)
end
out_file.close
in_file.close