Probability density function

Andrea_85 · October 30, 2014, 09:36

Hi All,

Is there any pre-implemented function to calculate the pdf (probability density function) of a given variable? I need something that does more or less what the matlab command "hist" does to calculate the pdf of the velocity during the run.

Thanks

Andrea

fabian_roesler · October 30, 2014, 09:41

Hi,

Application: pdfPlot
Description: Generates a graph of a probability distribution function.

$WM_PROJECT_DIR/applications/utilities/postProcessing/miscellaneous/pdfPlot

Never used it though. Cheers

Fabian

Andrea_85 · October 31, 2014, 03:14

Hi Fabian,

It seems a good starting point. Thank you for the hint.

Best,

Andrea

Andrea_85 · November 4, 2014, 12:36

Hi,
maybe very stupid question...but how max and min function work for scalarField?

To define my intervals i need to define the minimum and maximum of a scalarField. If i use min(myScalarField) or max(myScalarField) i get very strange numbers. So, do min and max work for scalarField and do they work also in parallel (do they perform reduce operations)?

best,

andrea

fabian_roesler · November 7, 2014, 02:27

Nope, min and max only work for one processor. For parallel runs you have to use global gmin/gmax functions.

Cheers

Fabian

October 30, 2014, 09:36	Probability density function	#1
Andrea_85 Senior Member Andrea Ferrari Join Date: Dec 2010 Posts: 319 Rep Power: 16	Hi All, Is there any pre-implemented function to calculate the pdf (probability density function) of a given variable? I need something that does more or less what the matlab command "hist" does to calculate the pdf of the velocity during the run. Thanks Andrea

October 30, 2014, 09:41	pdfPlot	#2
fabian_roesler Senior Member Fabian Roesler Join Date: Mar 2009 Location: Germany Posts: 213 Rep Power: 18	Hi, Application: pdfPlot Description: Generates a graph of a probability distribution function. $WM_PROJECT_DIR/applications/utilities/postProcessing/miscellaneous/pdfPlot Never used it though. Cheers Fabian

November 7, 2014, 02:27	gmin/gmax	#5
fabian_roesler Senior Member Fabian Roesler Join Date: Mar 2009 Location: Germany Posts: 213 Rep Power: 18	Nope, min and max only work for one processor. For parallel runs you have to use global gmin/gmax functions. Cheers Fabian

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October 31, 2014, 03:14		#3
Andrea_85 Senior Member Andrea Ferrari Join Date: Dec 2010 Posts: 319 Rep Power: 16	Hi Fabian, It seems a good starting point. Thank you for the hint. Best, Andrea

November 4, 2014, 12:36		#4
Andrea_85 Senior Member Andrea Ferrari Join Date: Dec 2010 Posts: 319 Rep Power: 16	Hi, maybe very stupid question...but how max and min function work for scalarField? To define my intervals i need to define the minimum and maximum of a scalarField. If i use min(myScalarField) or max(myScalarField) i get very strange numbers. So, do min and max work for scalarField and do they work also in parallel (do they perform reduce operations)? best, andrea