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List:       vtkusers
Subject:    Re: [vtkusers] Smoothing 2D plot in ChartXY
From:       "Marcus D. Hanwell" <marcus.hanwell () kitware ! com>
Date:       2011-06-29 15:46:37
Message-ID: BANLkTi=LBeFdihxiG2WbqdmRigcOt5Bq9w () mail ! gmail ! com
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On Thu, Jun 23, 2011 at 10:46 AM, Yuri Timenkov <yuri@timenkov.ru> wrote:
> Hello,
> I have a raw set of 2D data from vtkTable using new vtkChartXY API (function
> in time). But it has a lot of peaks and falls and too much details (see
> example in attachment). I want to make it look niceer, so I see 3 options:
>
> Draw every Nth point.
> Reduce number of points my averaging adjacent values.
> Draw kind of envelope.
>
> Does VTK provide any means to do it automatically or I have to prepare data
> somehow before plotting?

I am not aware of any filters that do that, but this kind of thing
could be made into a filter. It would be good to get a few of the
commonly used algorithms encapsulated into some filters for treating
chart data, and the pipeline would be the right place to do it.

Marcus
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