Module: NumRu::GPhys::IO
- Defined in:
- lib/numru/gphys/gphys_io.rb
Constant Summary collapse
- NETCDF =
// file type selctor –>
"NETCDF"
- GRADS =
"GRADS"
- GRIB =
"GRIB"
- NUSDAS =
"NUSDAS"
- He5 =
"He5"
- GTOOL3 =
"GTOOL3"
- GTURLfmt =
"path[@|/]varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]]"
- @@iomdl =
{NETCDF => GPhys::NetCDF_IO, GRADS => GPhys::GrADS_IO, GRIB => GPhys::Grib_IO, NUSDAS => GPhys::NuSDaS_IO, GTOOL3 => GPhys::Gtool3_IO}
- @@file_class =
{NETCDF => NetCDF, GRADS => GrADS_Gridded, #GRIB => VArrayGrib.grib, # Hash is not dynamic: see below NUSDAS => NuSDaS, GTOOL3 => Gtool3}
- @@nc_pattern =
[/\.nc$/]
- @@grad_pattern =
[/\.ctl$/]
- @@grib_pattern =
[/\.grib$/, /\.grb$/]
- @@nus_pattern =
[/\.nus$/]
- @@has_he5 =
defined?(HE5)
- @@he5_pattern =
[/\.he5$/]
Class Method Summary collapse
- .[](key) ⇒ Object
- .each_along_dims_write(gphyses, files, *loopdims, &block) ⇒ Object
- .file2file_class(file) ⇒ Object
- .file2specific_module(file) ⇒ Object
- .file2type(file) ⇒ Object
-
.open(file, varname) ⇒ Object
// module functions to be defined in specific IO modules –>.
-
.open_gturl(gturl) ⇒ Object
def parse_gturl.
- .parse_gturl(gturl) ⇒ Object
-
.str2gphys(str) ⇒ Object
def open_gturl.
-
.use_gphys_grib ⇒ Object
switches for io libraries switch grib library.
- .use_rb_grib ⇒ Object
-
.var_names(file) ⇒ Object
<– file type selctor //.
- .var_names_except_coordinates(file) ⇒ Object
- .write(file, gphys, name = nil) ⇒ Object
- .write_grid(file, grid_or_gphys) ⇒ Object
Class Method Details
.[](key) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 173 def @@file_class.[](key) if key == GRIB VArrayGrib.grib else super end end |
.each_along_dims_write(gphyses, files, *loopdims, &block) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 142 def each_along_dims_write(gphyses, files, *loopdims, &block) files = [files] if !files.is_a?(Array) files.each do |fl| if fl.is_a?(NetCDF) NetCDF_Conventions.add_history(fl, "#{File.basename($0)}") end end IO_Common::each_along_dims_write(gphyses, files, loopdims, file2specific_module(files), &block) end |
.file2file_class(file) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 242 def file2file_class(file) @@file_class[ file2type(file) ] end |
.file2specific_module(file) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 238 def file2specific_module(file) @@iomdl[ file2type(file) ] end |
.file2type(file) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 192 def file2type(file) case file when Array, NArray return file2type(file[0]) # inspect the first element (ignoring the rest) when NetCDF return NETCDF when GrADS_Gridded return GRADS when VArrayGrib.grib return GRIB when NuSDaS return NUSDAS when Gtool3 return GTOOL3 when Regexp return NETCDF # So far, only NetCDF_IO supports Regexp. when *@@nc_pattern return NETCDF when *@@grad_pattern return GRADS when *@@grib_pattern return GRIB when *@@nus_pattern return NUSDAS when String return NETCDF if /^http:\/\// =~ file # assume a DODS URL return nil unless File.exist?(file) return NETCDF if NetCDF_IO.is_a_NetCDF?(file) return GRADS if GrADS_IO.is_a_GrADS?(file) return GRIB if Grib_IO.is_a_Grib?(file) return NUSDAS if NuSDaS_IO.is_a_NuSDaS?(file) return GTOOL3 if Gtool3_IO.is_a_Gtool3?(file) end if @@has_he5 case file when HE5, HE5Sw return He5 when *@@he5_pattern return He5 when String return He5 if HE5_IO.is_a_HE5?(file) end end return nil end |
.open(file, varname) ⇒ Object
// module functions to be defined in specific IO modules –>
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# File 'lib/numru/gphys/gphys_io.rb', line 129 def open(file, varname) file2specific_module(file)::open(file, varname) end |
.open_gturl(gturl) ⇒ Object
def parse_gturl
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# File 'lib/numru/gphys/gphys_io.rb', line 334 def open_gturl(gturl) file, var, slice, cut_slice, thinning = GPhys::IO.parse_gturl(gturl) gp = GPhys::IO.open(file,var) gp = gp[slice] if slice gp = gp.cut(cut_slice) if cut_slice gp = gp[thinning] if thinning gp end |
.parse_gturl(gturl) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 281 def parse_gturl(gturl) if /(.*)@(.*)/ =~ gturl file = $1 var = $2 elsif /(.*)\/(.*)/ =~ gturl file = $1 var = $2 else raise "invalid URL: '[@|/]' between path & variable is not found\n\n" + "URL format: " + GTURLfmt end if /,/ =~ var slice = Hash.new cut_slice = Hash.new thinning = Hash.new var_descr = var.split(/,/) var = var_descr.shift var_descr.each do |s| if /(.*)=(.*)/ =~ s dimname = $1 subset = $2 case subset when /\^(.*):(.*):(.*)/ slice[dimname] = ($1.to_i)..($2.to_i) thinning[dimname] = {(0..-1) => $3.to_i} when /\^(.*):(.*)/ slice[dimname] = ($1.to_i)..($2.to_i) when /\^(.*)/ slice[dimname] = $1.to_i when /(.*):(.*):(.*)/ cut_slice[dimname] = ($1.to_f)..($2.to_f) thinning[dimname] = {(0..-1) => $3.to_i} when /(.*):(.*)/ cut_slice[dimname] = ($1.to_f)..($2.to_f) else cut_slice[dimname] = subset.to_f end else raise "invalid URL: variable subset specification error\n\n" + "URL format: " + GTURLfmt end end slice = nil if slice.length == 0 cut_slice = nil if cut_slice.length == 0 thinning = nil if thinning.length == 0 else slice = nil cut_slice = nil thinning = nil end [file, var, slice, cut_slice, thinning] end |
.str2gphys(str) ⇒ Object
def open_gturl
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# File 'lib/numru/gphys/gphys_io.rb', line 343 def str2gphys(str) case str when /^https?:\/\// file_tester = Proc.new{|fname| NetCDF.open(fname) rescue false} when file_tester = Proc.new{|fname| File.exists?(fname)} end fname = str; vname = nil # initial value while fname if file_tester.call(fname) break else if /(.*)\/([^\/]+)/ =~ fname fname = $1 if vname.nil? vname = $2 else vname = $2 + "/" + vname end else raise "Not found: #{str}" end end end if vname.nil? vns = var_names_except_coordinates(fname) if vns.length==1 vname=vns.first else raise "#{str} has multiple variables #{vns.inspect}. Specify one." end end open(fname,vname) end |
.use_gphys_grib ⇒ Object
switches for io libraries switch grib library
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# File 'lib/numru/gphys/gphys_io.rb', line 121 def use_gphys_grib VArrayGrib.use_gphys_grib end |
.use_rb_grib ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 124 def use_rb_grib VArrayGrib.use_rb_grib end |
.var_names(file) ⇒ Object
<– file type selctor //
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# File 'lib/numru/gphys/gphys_io.rb', line 272 def var_names(file) file2specific_module(file).var_names(file) end |
.var_names_except_coordinates(file) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 275 def var_names_except_coordinates(file) file2specific_module(file).var_names_except_coordinates(file) end |
.write(file, gphys, name = nil) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 133 def write(file, gphys, name=nil) file2specific_module(file)::write(file, gphys, name) end |
.write_grid(file, grid_or_gphys) ⇒ Object
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# File 'lib/numru/gphys/gphys_io.rb', line 137 def write_grid(file, grid_or_gphys) # usually not needed (internally called by write) file2specific_module(file)::write_grid(file, grid_or_gphys) end |