How to visualize WRF-Fire output in Matlab - Revision history

Jmandel: /* Loading WRF-Fire files into Matlab */

2016-05-19T21:49:25Z

Loading WRF-Fire files into Matlab

← Older revision		Revision as of 21:49, 19 May 2016
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	==Loading WRF-Fire files into [[Matlab]]==		==Loading WRF-Fire files into [[Matlab]]==
			''Note that fire variables in WRF files have an extra strip the size of subgrid ratio at the end every spatial dimension. That is, each spatial dimension stored in WRF files is by the subgrid ratio larger. The functions provided here will hide that and manipulate the fire variables correctly.''

	* It is recommended to set in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the variable '''frames_per_outfile''' small, esp. for a large model, to avoid creating huge files.		* It is recommended to set in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the variable '''frames_per_outfile''' small, esp. for a large model, to avoid creating huge files.
	* Run WRF-Fire.		* Run WRF-Fire.
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	** [[How to get WRF-Fire\|Download WRF-Fire]] on the visualization computer		** [[How to get WRF-Fire\|Download WRF-Fire]] on the visualization computer
	** Transfer the '''wrfout''' file to the visualization computer		** Transfer the '''wrfout''' file to the visualization computer
	* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file.		* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file. You can also '''cd''' to '''wrf-fire/other/Matlab''' and run '''startup''' there.
	* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, '''ncread''' to read a single variable into a matrix, '''nc2struct''' to read multiple variables as fields of a structure, and '''ncreplace''' to rewrite the value of a variable in the file.		* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, '''ncread''' to read a single variable into a matrix, '''nc2struct''' to read multiple variables as fields of a structure, and '''ncreplace''' to rewrite the value of a variable in the file.

Jmandel: /* Loading WRF-Fire files into Matlab */

2016-05-04T20:48:56Z

Loading WRF-Fire files into Matlab

← Older revision		Revision as of 20:48, 4 May 2016
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	** [[How to get WRF-Fire\|Download WRF-Fire]] on the visualization computer		** [[How to get WRF-Fire\|Download WRF-Fire]] on the visualization computer
	** Transfer the '''wrfout''' file to the visualization computer		** Transfer the '''wrfout''' file to the visualization computer
	* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file ~~if you want~~.		* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file.
	* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, ~~and~~ '''ncread''' to read a single variable into a matrix.		* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, '''ncread''' to read a single variable into a matrix, '''nc2struct''' to read multiple variables as fields of a structure, and '''ncreplace''' to rewrite the value of a variable in the file.

	==3D Visualization==		==3D Visualization==

Jmandel: /* Loading WRF-FIre files into Matlab */

2013-06-15T04:46:31Z

Loading WRF-FIre files into Matlab

← Older revision		Revision as of 04:46, 15 June 2013
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	* [[How to run WRF-Fire\|A working installation]] of [[WRF-Fire]], possibly on another computer or a cluster.		* [[How to run WRF-Fire\|A working installation]] of [[WRF-Fire]], possibly on another computer or a cluster.

	==Loading WRF-~~FIre~~ files into [[Matlab]]==		==Loading WRF-Fire files into [[Matlab]]==
	* It is recommended to set in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the variable '''frames_per_outfile''' small, esp. for a large model, to avoid creating huge files.		* It is recommended to set in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the variable '''frames_per_outfile''' small, esp. for a large model, to avoid creating huge files.
	* Run WRF-Fire.		* Run WRF-Fire.
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	** Transfer the '''wrfout''' file to the visualization computer		** Transfer the '''wrfout''' file to the visualization computer
	* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file if you want.		* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file if you want.
	* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, and '''ncread''' to read a single variable into a matrix.		* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, and '''ncread''' to read a single variable into a matrix.

	==3D Visualization==		==3D Visualization==

Jmandel at 15:51, 2 August 2011

2011-08-02T15:51:21Z

← Older revision		Revision as of 15:51, 2 August 2011
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	==Loading WRF-FIre files into [[Matlab]]==		==Loading WRF-FIre files into [[Matlab]]==
	* [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the ~~line with '''history_interval''' to the desired frame interval in seconds, for example '''history_interval_s=1'''. It is recommended to set~~ '''frames_per_outfile''' small, esp. for large model, to avoid creating huge files.		* It is recommended to set in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the variable '''frames_per_outfile''' small, esp. for a large model, to avoid creating huge files.
	* Run WRF-Fire.		* Run WRF-Fire.
	* If the visualization computer is different from the computer where you run WRF-Fire,		* If the visualization computer is different from the computer where you run WRF-Fire,
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	==3D Visualization==		==3D Visualization==

	* Proceed as above except make sure '''frames_per_outfile''' is large enough so that only one '''wrfout''' file is produced.		* Proceed as above, except change in [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml '''namelist.input'''] the line with '''history_interval''' to the desired frame interval in seconds, for example '''history_interval_s=1''' make sure '''frames_per_outfile''' is large enough so that only one '''wrfout''' file is produced.
	* Type in Matlab '''wrfout2frame3d'''		* Type in Matlab '''wrfout2frame3d'''
	* Examine the variables loaded in the Matlab workspace for further education and entertainment.		* Examine the variables loaded in the Matlab workspace for further education and entertainment.

Jmandel: Loading WRF-FIre files into Matlab

2011-08-02T05:25:54Z

Loading WRF-FIre files into Matlab

← Older revision		Revision as of 05:25, 2 August 2011
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	==Prerequistes==		==Prerequistes==

	* A computer ~~for visualization~~ with recent [[Matlab]] and memory at least 3 times the size of the '''wrfout''' file.		* A visualization computer with recent [[Matlab]] and memory at least 3 times the size of the '''wrfout''' file.
	* [[How to run WRF-Fire\|A working installation]] of [[WRF-Fire]], possibly on another computer or a cluster.		* [[How to run WRF-Fire\|A working installation]] of [[WRF-Fire]], possibly on another computer or a cluster.

	==~~Directions~~==		==Loading WRF-FIre files into [[Matlab]]==
			* [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the line with '''history_interval''' to the desired frame interval in seconds, for example '''history_interval_s=1'''. It is recommended to set '''frames_per_outfile''' small, esp. for large model, to avoid creating huge files.
	* [http://www.mmm.ucar.edu/wrf/users/docs/user_guide_V3/users_guide_chap5.htm#Nml Change in '''namelist.input'''] the line with '''history_interval''' to the desired frame interval in seconds, for example '''history_interval_s=1'''. ~~Make sure~~ '''frames_per_outfile''' is large ~~enough so that only one '''wrfout''' file is produced~~.
	* Run WRF-Fire.		* Run WRF-Fire.
	* If the visualization computer is different from the computer where you run WRF-Fire,		* If the visualization computer is different from the computer where you run WRF-Fire,
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	** Transfer the '''wrfout''' file to the visualization computer		** Transfer the '''wrfout''' file to the visualization computer
	* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file if you want.		* Start Matlab on the visualization computer from the directory '''wrf-fire/WRFV3/test/em_fire'''. This is needed to set Matlab search path. Alternatively, '''cd''' in Matlab to this directory and run '''startup'''. You can then '''cd''' to the directory where you put the '''wrfout''' file if you want.
			* Use commands '''ncload''' to load all variables from a WRF file into matlab workspace, and '''ncread''' to read a single variable into a matrix.

			==3D Visualization==

			* Proceed as above except make sure '''frames_per_outfile''' is large enough so that only one '''wrfout''' file is produced.
	* Type in Matlab '''wrfout2frame3d'''		* Type in Matlab '''wrfout2frame3d'''
	* Examine the variables loaded in the Matlab workspace for further education and entertainment.		* Examine the variables loaded in the Matlab workspace for further education and entertainment.

Jmandel: {{users guide}}

2011-08-02T05:19:39Z

← Older revision		Revision as of 05:19, 2 August 2011
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			{{users guide}}
	==Prerequistes==		==Prerequistes==

Jmandel: /* Gallery */

2010-11-14T20:42:22Z

Gallery

← Older revision		Revision as of 20:42, 14 November 2010
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	[[File:Hill2-jan.png\|200px]]		[[File:Hill2-jan.png\|200px]]
	[[File:WRF-Fire-walking-ignition-matlab.png\|200px]]		[[File:WRF-Fire-walking-ignition-matlab.png\|200px]]
			[[File:Harmanli.png\|200px]]

	==Works with==		==Works with==

Jmandel: /* Works with */

2010-08-13T03:15:44Z

Works with

← Older revision		Revision as of 03:15, 13 August 2010
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	[[Category:Howtos\|Visualize WRF-Fire output in Matlab]]		[[Category:Howtos\|Visualize WRF-Fire output in Matlab]]
	[[Category:WRF-Fire]]		[[Category:WRF-Fire]]
	[[Category:~~Visualizations~~]]		[[Category:Visualization]]

Jmandel at 20:12, 7 August 2010

2010-08-07T20:12:57Z

← Older revision		Revision as of 20:12, 7 August 2010
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	The scripts are fairly straightforward and various options are controlled by editing the scripts in Matlab.		The scripts are fairly straightforward and various options are controlled by editing the scripts in Matlab.

			==See also==

			* [[How to interpret WRF-Fire variables]]

	== Gallery ==		== Gallery ==
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	[[File:Hill2-jan.png\|200px]]		[[File:Hill2-jan.png\|200px]]
	[[File:WRF-Fire-walking-ignition-matlab.png\|200px]]		[[File:WRF-Fire-walking-ignition-matlab.png\|200px]]

	~~==See also==~~

	* [[How to interpret WRF-Fire variables]]

	==Works with==		==Works with==

Jmandel: further reading

2010-08-07T20:12:23Z