module NumRu::GPhys::IO

A module to handle file IO regarding GPhys.

Many of the functionality of this module is implemented in the modules for specific file types such as NumRu::GPhys::NetCDF_IO, to which this module directs operations.

For example, GPhys::IO.open(file, name) simply calls GPhys::*_IO.open(file, name), where '*' is NetCDF, GrADS, or grib.

Module functions

open(files, varname) write(file, gphys, name=nil) write_grid(file, grid_or_gphys) each_along_dims_write(gphyses, files, *loopdims){...} # a block is expected var_names(file) var_names_except_coordinates(file) See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above. file2type(file) Figures out the file type supported in this module. ARGUMENTS file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp. RETURN VALUE GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants. file2specific_module(file) Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO. file2file_class(file) Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib. parse_gturl(gturl) Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] ARGUMENTS gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] RETURN VALUES An Array consisting of [file, var, slice, thinning], where file (String) : path var (String) : variable name slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice]. thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut. open_gturl(gturl) a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format. RETURN VALUE a GPhys
write(file, gphys, name=nil) write_grid(file, grid_or_gphys) each_along_dims_write(gphyses, files, *loopdims){...} # a block is expected var_names(file) var_names_except_coordinates(file) See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above. file2type(file) Figures out the file type supported in this module. ARGUMENTS file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp. RETURN VALUE GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants. file2specific_module(file) Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO. file2file_class(file) Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib. parse_gturl(gturl) Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] ARGUMENTS gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] RETURN VALUES An Array consisting of [file, var, slice, thinning], where file (String) : path var (String) : variable name slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice]. thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut. open_gturl(gturl) a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format. RETURN VALUE a GPhys
write_grid(file, grid_or_gphys) each_along_dims_write(gphyses, files, *loopdims){...} # a block is expected var_names(file) var_names_except_coordinates(file) See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above. file2type(file) Figures out the file type supported in this module. ARGUMENTS file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp. RETURN VALUE GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants. file2specific_module(file) Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO. file2file_class(file) Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib. parse_gturl(gturl) Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] ARGUMENTS gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] RETURN VALUES An Array consisting of [file, var, slice, thinning], where file (String) : path var (String) : variable name slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice]. thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut. open_gturl(gturl) a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format. RETURN VALUE a GPhys
each_along_dims_write(gphyses, files, *loopdims){...} # a block is expected var_names(file) var_names_except_coordinates(file) See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above. file2type(file) Figures out the file type supported in this module. ARGUMENTS file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp. RETURN VALUE GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants. file2specific_module(file) Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO. file2file_class(file) Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib. parse_gturl(gturl) Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] ARGUMENTS gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] RETURN VALUES An Array consisting of [file, var, slice, thinning], where file (String) : path var (String) : variable name slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice]. thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut. open_gturl(gturl) a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format. RETURN VALUE a GPhys
var_names(file) var_names_except_coordinates(file) See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above. file2type(file) Figures out the file type supported in this module. ARGUMENTS file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp. RETURN VALUE GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants. file2specific_module(file) Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO. file2file_class(file) Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib. parse_gturl(gturl) Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] ARGUMENTS gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]] RETURN VALUES An Array consisting of [file, var, slice, thinning], where file (String) : path var (String) : variable name slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice]. thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut. open_gturl(gturl) a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format. RETURN VALUE a GPhys
var_names_except_coordinates(file): See the manual of NumRu::GPhys::NetCDF_IO for the methods listed above.
file2type(file): Figures out the file type supported in this module.

ARGUMENTS

file (String, Regexp, NetCDF, Grib, or GrADS_Gridded) : What to return is of course obvious if it is NetCDF, Grib, or GrADS_Gridded. If it is a String, it is assumed to be a path of a file, and the file type is determined by its suffix when 'nc', 'ctl', or 'grib'; In other cases, the type is figured out by reading in a few bytes from the beginning. If Regexp, currently, a NetCDF is assumed, since only NetCDF_IO.open supports Regexp.

RETURN VALUE

GPhys::IO::NETCDF, GPhys::IO::GRIB, or GPhys::IO::GRADS, which are string constants.
file2specific_module(file): Same as file2type, but returns GPhys::NetCDF_IO, GPhys::GrADS_IO, or GPhys::Grib_IO.
file2file_class(file): Same as file2type, but returns NetCDF, GrADS_Gridded, or Grib.
parse_gturl(gturl): Parses GTOOL4-type URLs to specify path, variable name, and optionally subsets, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]]

ARGUMENTS

gturl (String) GTOOL4 URL, whose format is path@varname[,dimname=pos1[:pos2[:thinning_intv]][,dimname=...]]

RETURN VALUES

An Array consisting of [file, var, slice, thinning], where

file (String) : path

var (String) : variable name

slice (Array) : subset specifier in physical coordinate to be used as GPhys#cut[slice].

thinning (Array) : additional subset specifier for thinning with uniform intervals if needed to be used GPhys#[thinning] after appling GPhys#cut.
open_gturl(gturl): a GPhys constructor from a Gtool4-type URL. See parse_gturl for its format.

RETURN VALUE

a GPhys

Module constants

GTURLfmt: The format of Gtool4URL.

module NumRu::GPhys::IO

Module functions

`var_names_except_coordinates(file)`

`file2type(file)`

`file2specific_module(file)`

`file2file_class(file)`

`parse_gturl(gturl)`

`open_gturl(gturl)`

Module constants

`GTURLfmt`