[vtkusers] Histogram

[Aytekin Vargun]

Thanks a lot Chandra.
While looking at other classes in VTK, I also saw that vtkBarChartActor can
be used for this purpose. It might be even easier to construct histograms
with this way. We only need to compute frequencies with a little bit of C++
programming and use vtkBarChart to construct and display the histogram.
Aytekin

On Thu, Mar 5, 2009 at 4:41 PM, shekharc
<Shekhar.Chandra at sci.monash.edu.au>wrote:

> Hi Aytekin,
>
> That is the correct example. vtkImageAccumulate will calculate the
> histogram and use vtkXYPlotActor to display the actual histogram once
> calculated (pass accumulate class into it).
>
> HTH
> Cheers
> Shakes
>
> Aytekin Vargun wrote:
>
>> Hi,
>> I want to construct and display a histogram using VTK/C++ from some
>> numeric data in an XML file.
>>
>>
>> I see that there is a test file called:
>> ImageAccumulate.cxx <
>> http://public.kitware.com/cgi-bin/viewcvs.cgi/*checkout*/Imaging/Testing/Cxx/ImageAccumulate.cxx?root=VTK&content-type=text/plain
>> >
>>
>> but this program does not display any histograms. From what I read for
>> vtkImageAccumulate <
>> http://www.vtk.org/doc/nightly/html/classvtkImageAccumulate.html>
>> class it should be possible to do this.
>>
>> Can somebody help me to make necessary changes to make it more usable? Or
>> suggest any other way of getting histograms in VTK.
>>
>> I appreciate your help.
>> Aytekin
>>
>> --
>> My web page: http://www.cs.rpi.edu/~vargua<http://www.cs.rpi.edu/%7Evargua>
>>
>>
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-- 
My web page: http://www.cs.rpi.edu/~vargua
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