[Insight-users] itk::ListSample Qn.

[Luis Ibanez]

Hi Kalpathi,



Please read the ITK Software Guide,

         http://www.itk.org/ItkSoftwareGuide.pdf


In particular read,
Chapter 10, "Statistics", in pdf-pages 637-729.


Note that itk::ListSample is not a filter. Instead, it is
a data structure. It is designed to hold the data that you
feed to most of the Statistics algorithms.


The ListSample class is described in section 10.1.1
in pdf-page: 637.  The source code of the example
is available at


     Insight/
          Examples/
                 Statistics/
                       ListSample.cxx


You will see that the method for introducing values in
the list sample are:

    a) using "push_back" just like any other STL container

    b) calling SetMeasurementVector( id, vectorValue );


---


The Histogram class is described in section 10.1.3,
in pdf-page 645. You will see, in the example


     Insight/
          Examples/
                 Statistics/
                       Histogram.cxx


That you can put values in the histogram by invoking
the method:

      histogram->SetFrequency( bin, frequency )

Notice that the histogram is an Ndimensional histogram,
not just the traditional unidimensional one.



     Regards,


       Luis


---------------------------
Kalpathi Subramanian wrote:
> 
> I am trying to use this filter and understand most of it (and
> the itk::Histogram), but how do you go about putting in measurement values
> into this container?  I assume it builds up the frequency in
> each bin, as multiple items end up in the same bin?
> 
>     -- krs
>