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PIVMat 3.02

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PIVMat 3.02

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27 Apr 2006 (Updated )

A PIV Post-processing and data analysis toolbox

histf (PIVMat Toolbox)
histf (PIVMat Toolbox)
PIVMat Function Reference<< Prev | Next >> 
histf
Histogram of a vector/scalar field

Description
H = histf(F) computes the histogram H of the field(s) F into 100 
equally spaced bin. The appropriate range of bins is estimated from the 
rms of the first field. 
 
H = histf(F,BIN) computes the histograms among the bins specified by 
the vector BIN.  BIN can be in the form LINSPACE(-X,X,N). 
 
If F is a 2-components vector field, use [HX, HY] = histf(F,..) to 
compute the histogram for each component of the vector field. 
Similarly, if F is a 3-components vector field, use 
[HX, HY, HZ] = histf(F,..) 
 
[...,BIN] = histf(...) also returns the bins vector BIN used for the 
computation of the histogram. This is useful if BIN is estimated by 
histf itself. 
 
By default, histf considers the values 0 as erroneous, and does not 
include them in the histogram. If however the values 0 are to be 
included, specify histf(...,'0'); 
 
Example
 
   v = loadvec('*.vc7'); 
   [h,w] = histf(vec2scal(v,'rot')); 
   semilogy(w,h,'ro-'); 
 
See Also
histscal_disp, statf, corrf, vsf. 
 
Published output in the Help browser 
   showdemo histf 

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