NetCDF Operators - Revision history

Ak3pscha at 13:11, 15 May 2020

2020-05-15T13:11:27Z

← Older revision		Revision as of 13:11, 15 May 2020
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	-> Befehle -> Kommandozeilenfenster öffnen (TotalCommander language = German):		-> Befehle -> Kommandozeilenfenster öffnen (TotalCommander language = German):
	* Extend the search path:		* Extend the search path:
	set PATH = %PATH%;~~\\themis\system\akprog~~\bin\win		set PATH = %PATH%;%PROGHOME%\bin\win
	* Get help on the command, for example:		* Get help on the command, for example:
	ncrcat		ncrcat

imported>Schade Peter: , nach ncks -d dim

2018-01-09T09:55:33Z

, nach ncks -d dim

← Older revision		Revision as of 09:55, 9 January 2018
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	* more options see [https://linux.die.net/man/1/ncks].		* more options see [https://linux.die.net/man/1/ncks].
	==== Typical reduction of UnTRIM results in time====		==== Typical reduction of UnTRIM results in time====
	* ncks -d nMesh2_data_time 1, 19, 6 in_file out_file		* ncks -d nMesh2_data_time,1,19,6 in_file out_file
	* extracts the first, seventh, thirteenth and nineteenth timestep		* extracts the first, seventh, thirteenth and nineteenth timestep
	==== Typical reduction of meteorological data in space====		==== Typical reduction of meteorological data in space====
	* ncks -d rlon 600,900 iconeu.nc tmp_reduced_rlon.nc		* ncks -d rlon,600,900 iconeu.nc tmp_reduced_rlon.nc
	* ncks -d rlat 200,500 tmp_reduced_rlon.nc iconeu.reduced_in_space.nc		* ncks -d rlat,200,500 tmp_reduced_rlon.nc iconeu.reduced_in_space.nc
	* extracts a "square" of 301 * 301 values in longitude and latitude direction in a two-step procedure		* extracts a "square" of 301 * 301 values in longitude and latitude direction in a two-step procedure

imported>Schade Peter: Reduction of a NetCDF file along its dimensions

2017-11-29T15:03:40Z

Reduction of a NetCDF file along its dimensions

← Older revision		Revision as of 15:03, 29 November 2017
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	==About NCO==		==About NCO==
	The NCO toolkit manipulates and analyzes data stored in [[NetCDF]]-accessible formats, including DAP, HDF4, and HDF5. It exploits the geophysical expressivity of many CF (Climate & Forecast) metadata conventions, the flexible description of physical dimensions translated by UDUnits, the network transparency of OPeNDAP, the storage features (e.g., compression, chunking, groups) of HDF (the Hierarchical Data Format), and many powerful mathematical and statistical algorithms of GSL (the GNU Scientific Library). NCO is fast, powerful, and free.		The NCO toolkit manipulates and analyzes data stored in [[NetCDF]]-accessible formats, including DAP, HDF4, and HDF5. It exploits the geophysical expressivity of many CF (Climate & [[Forecast]]) metadata conventions, the flexible description of physical dimensions translated by UDUnits, the network transparency of OPeNDAP, the storage features (e.g., compression, chunking, groups) of HDF (the Hierarchical Data Format), and many powerful mathematical and statistical algorithms of GSL (the GNU Scientific Library). NCO is fast, powerful, and free.

	For more information see [http://nco.sourceforge.net nco.sourceforge.net].		For more information see [http://nco.sourceforge.net nco.sourceforge.net].
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	# Example: ncrcat -h f1.nc f2.nc ... fn.nc result.nc (-h suppresses the modification or creation of a history attribute);		# Example: ncrcat -h f1.nc f2.nc ... fn.nc result.nc (-h suppresses the modification or creation of a history attribute);
	# More information: [http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator ncrcat-netCDF-Record-Concatenator].		# More information: [http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator ncrcat-netCDF-Record-Concatenator].

			===Reduction of a [[NetCDF]] file along its dimensions===
			====General====
			* ncks -d dim, min, max,[ stride] in_file out_file
			* more options see [https://linux.die.net/man/1/ncks].
			==== Typical reduction of UnTRIM results in time====
			* ncks -d nMesh2_data_time 1, 19, 6 in_file out_file
			* extracts the first, seventh, thirteenth and nineteenth timestep
			==== Typical reduction of meteorological data in space====
			* ncks -d rlon 600,900 iconeu.nc tmp_reduced_rlon.nc
			* ncks -d rlat 200,500 tmp_reduced_rlon.nc iconeu.reduced_in_space.nc
			* extracts a "square" of 301 * 301 values in longitude and latitude direction in a two-step procedure

	==Availability at the BAW in Hamburg==		==Availability at the BAW in Hamburg==

imported>Sehili Aissa: /* Availability at the BAW in Hamburg */

2016-10-24T09:20:52Z

Availability at the BAW in Hamburg

← Older revision		Revision as of 09:20, 24 October 2016
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	==Availability at the BAW in Hamburg==		==Availability at the BAW in Hamburg==
	* ~~Status 04~~. ~~Feb~~. ~~2015~~		* Linux: nco-4.6.1 from 06.08.2016
	* ~~NCO commands are only available on~~ Windows ~~systems~~ at ~~the~~ console level.		* Windows: at console level. Status 04.02.2015


	=="Recipe" for execution on Windows systems==		=="Recipe" for execution on Windows systems==

imported>Schade Peter: kepheus durch themis ersetzt

2015-12-21T10:23:32Z

kepheus durch themis ersetzt

← Older revision		Revision as of 10:23, 21 December 2015
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	-> Befehle -> Kommandozeilenfenster öffnen (TotalCommander language = German):		-> Befehle -> Kommandozeilenfenster öffnen (TotalCommander language = German):
	* Extend the search path:		* Extend the search path:
	set PATH = %PATH%;\\~~kepheus~~\system\akprog\bin\win		set PATH = %PATH%;\\themis\system\akprog\bin\win
	* Get help on the command, for example:		* Get help on the command, for example:
	ncrcat		ncrcat

imported>Schade Peter: + example directory

2015-06-09T14:26:16Z

+ example directory

← Older revision		Revision as of 14:26, 9 June 2015
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	ncrcat -h file1.nc file2.nc result.nc		ncrcat -h file1.nc file2.nc result.nc
	* The option -h eliminates the attributes history and nco_openmp_thread_number. The latter causes an error when processing the output file with BAW programs as NCANALYSE.		* The option -h eliminates the attributes history and nco_openmp_thread_number. The latter causes an error when processing the output file with BAW programs as NCANALYSE.

			* Example directory $PROGHOME/examples/ncdelta/data/emderfahrwasser-1/mes/wl. The time series of eleven different stations have been concatenated to 2010_0608_0708.aequi5.nc with ncrcat.


	==Citations==		==Citations==

imported>Schade Peter at 14:08, 9 June 2015

2015-06-09T14:08:53Z

← Older revision		Revision as of 14:08, 9 June 2015
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	* Execute the command with options, file names etc.:		* Execute the command with options, file names etc.:
	ncrcat -h file1.nc file2.nc result.nc		ncrcat -h file1.nc file2.nc result.nc
	* The option -h eliminates the attributes history and nco_openmp_thread_number. The latter causes an error when processing the output file with BAW programs as ~~NCDELTA~~.		* The option -h eliminates the attributes history and nco_openmp_thread_number. The latter causes an error when processing the output file with BAW programs as NCANALYSE.

	==Citations==		==Citations==

imported>Schade Peter: meaning of the option -h

2015-06-09T14:05:35Z

meaning of the option -h

← Older revision		Revision as of 14:05, 9 June 2015
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	* Execute the command with options, file names etc.:		* Execute the command with options, file names etc.:
	ncrcat -h file1.nc file2.nc result.nc		ncrcat -h file1.nc file2.nc result.nc
			* The option -h eliminates the attributes history and nco_openmp_thread_number. The latter causes an error when processing the output file with BAW programs as NCDELTA.

	==Citations==		==Citations==

imported>Lang Guenther: /* Concatenation of several NetCDF files converted from boewrt.dat files into one cf-netcdf.nc file */ two work flow steps added

2015-02-07T13:58:29Z

Concatenation of several NetCDF files converted from boewrt.dat files into one cf-netcdf.nc file: two work flow steps added

← Older revision		Revision as of 13:58, 7 February 2015
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	==Typical applications at BAW==		==Typical applications at BAW==
	===Concatenation of several [[NetCDF]] files converted from [[BOEWRT.DAT\|boewrt.dat]] files into one [[CF-NETCDF.NC\|cf-netcdf.nc]] file===		===Concatenation of several [[NetCDF]] files converted from [[BOEWRT.DAT\|boewrt.dat]] files into one [[CF-NETCDF.NC\|cf-netcdf.nc]] file===
			# Verify original data for correctness and completeness;
			# (optional) Transform [[BOEWRT.DAT\|boewrt.dat]] using [[ZEITRIO]] into equidistant time-series of identical length;
	# Convert several [[BOEWRT.DAT\|boewrt.dat]] files using [[DATACONVERT]] to equivalent [[CF-NETCDF.NC\|cf-netcdf.nc]] files (with identical dates and times);		# Convert several [[BOEWRT.DAT\|boewrt.dat]] files using [[DATACONVERT]] to equivalent [[CF-NETCDF.NC\|cf-netcdf.nc]] files (with identical dates and times);
	# With '''ncrcat''' several files can be concatenated into one [[CF-NETCDF.NC\|cf-netcdf.nc]] file;		# With '''ncrcat''' several files can be concatenated into one [[CF-NETCDF.NC\|cf-netcdf.nc]] file;
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	# Example: ncrcat -h f1.nc f2.nc ... fn.nc result.nc (-h suppresses the modification or creation of a history attribute);		# Example: ncrcat -h f1.nc f2.nc ... fn.nc result.nc (-h suppresses the modification or creation of a history attribute);
	# More information: [http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator ncrcat-netCDF-Record-Concatenator].		# More information: [http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator ncrcat-netCDF-Record-Concatenator].



	==Availability at the BAW in Hamburg==		==Availability at the BAW in Hamburg==

imported>Schade Peter: + availability and recipe for execution

2015-02-04T16:12:27Z

+ availability and recipe for execution

@@ Line 5: / Line 5: @@
 For more information see [http://nco.sourceforge.net nco.sourceforge.net].
 ==Typical applications at BAW==
@@ Line 13: / Line 14: @@
 # Example: ncrcat -h f1.nc f2.nc ... fn.nc result.nc (-h suppresses the modification or creation of a history attribute);
 # More information: [http://nco.sourceforge.net/nco.html#ncrcat-netCDF-Record-Concatenator ncrcat-netCDF-Record-Concatenator].
 ==Citations==