Using MatLab

Rickard.Solsjo · August 2, 2010, 03:02

Hi everyone!
I have succesfully used sampleDict to get a plane slicing through my domain. So I have the x,y and z-direction plus the amount of fuel in each cell.
Does anyone know how to plot this in MatLab?

akidess · August 2, 2010, 03:18

http://web.cecs.pdx.edu/~gerry/MATLA...ml#loadAndPlot

musahossein · December 4, 2011, 08:49

I would appreciate it very much if some one could tell me how to plot the sampleDict output using GNU plot. I can do simple x y plots in GNU plot, but I have no idea how to plot all the individual files in the set folders. Would I have a write a script of sorts? I had assumed that since OpenFOAM permits data output in GNU format, there would some direction in the OpenFOAM users guide as to how to plot the data in GNU plot. But I have not found it yet. Any suggestion/help would be greatly appreciated. Thanks!

wyldckat · December 4, 2011, 15:54

Hi musahossein,

Without looking deeper into this, I can say that the tutorial "mesh/moveDynamicMesh/simpleHarmonicMotion" from OpenFOAM 2.0 seems to have several hints to what you need to do. There you'll find 3 important files:

Allrun - the main script for running the tutorial.
extractData - called by "Allrun" for extracting data into a format that gnuplot can easily understand.
shm.gnuplot - the script for gnuplot.

Another tutorial that uses gnuplot is "./incompressible/boundaryFoam/boundaryWallFunctionsProfile", but at first glance is doesn't seem to do what you need.

Good luck!
Bruno

tonyuprm · December 4, 2011, 16:06

Hey musaddeque,

I had the same situation a while ago having too many plots. Scripting is the way to go. I first used Octave to plot and handle different files. Octave uses gnuplot as the plotting engine. I had a hard time getting quality plots because of bugs between Octave/gnuplot and finally opted for using python and the matplotlib which works like a charm for generating good quality plots.

gl,

Tony

Here are some scripts which might help.

Octave Scripts.zip

musahossein · December 4, 2011, 18:54

Bruno / Tom,
Thankyou very much for your suggestions and files.

Musa

August 2, 2010, 03:02	Using MatLab	#1
Rickard.Solsjo Senior Member Rickard Join Date: May 2010 Location: Lund, Skåne, Sweden Posts: 143 Rep Power: 15	Hi everyone! I have succesfully used sampleDict to get a plane slicing through my domain. So I have the x,y and z-direction plus the amount of fuel in each cell. Does anyone know how to plot this in MatLab?

December 4, 2011, 08:49	Plotting SampleDict output using GNU Plot	#3
musahossein Senior Member musaddeque hossein Join Date: Mar 2009 Posts: 309 Rep Power: 18	I would appreciate it very much if some one could tell me how to plot the sampleDict output using GNU plot. I can do simple x y plots in GNU plot, but I have no idea how to plot all the individual files in the set folders. Would I have a write a script of sorts? I had assumed that since OpenFOAM permits data output in GNU format, there would some direction in the OpenFOAM users guide as to how to plot the data in GNU plot. But I have not found it yet. Any suggestion/help would be greatly appreciated. Thanks!

December 4, 2011, 15:54		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Hi musahossein, Without looking deeper into this, I can say that the tutorial "mesh/moveDynamicMesh/simpleHarmonicMotion" from OpenFOAM 2.0 seems to have several hints to what you need to do. There you'll find 3 important files: Allrun - the main script for running the tutorial. extractData - called by "Allrun" for extracting data into a format that gnuplot can easily understand. shm.gnuplot - the script for gnuplot. Another tutorial that uses gnuplot is "./incompressible/boundaryFoam/boundaryWallFunctionsProfile", but at first glance is doesn't seem to do what you need. Good luck! Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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August 2, 2010, 03:18		#2
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	http://web.cecs.pdx.edu/~gerry/MATLA...ml#loadAndPlot

December 4, 2011, 16:06		#5
tonyuprm Member Tony Join Date: Jun 2010 Posts: 54 Rep Power: 15	Hey musaddeque, I had the same situation a while ago having too many plots. Scripting is the way to go. I first used Octave to plot and handle different files. Octave uses gnuplot as the plotting engine. I had a hard time getting quality plots because of bugs between Octave/gnuplot and finally opted for using python and the matplotlib which works like a charm for generating good quality plots. gl, Tony Here are some scripts which might help. Octave Scripts.zip

December 4, 2011, 18:54		#6
musahossein Senior Member musaddeque hossein Join Date: Mar 2009 Posts: 309 Rep Power: 18	Bruno / Tom, Thankyou very much for your suggestions and files. Musa