[Paraview] interactively plotting points in 2D ImageData

[Utkarsh Ayachit]

You will have to manually change the Y range. Alternatively, write
your own filter that provides a simple slider-like  interface for
changing Y and internally you can use the ExtractVOI filter to achieve
the same effect.

Utkarsh

On Wed, Nov 10, 2010 at 10:03 AM, Randy Heiland <heiland at indiana.edu> wrote:
> Utkarsh,  Thanks for the prompt reply!  That does indeed work - as far as plotting the values.  But what about showing the associated horiz line across the imagedata?  And what about being able to interactively/dynamically translate that line up/down?  Are there options other than changing the Y range of the VOI for the ExtractSubset filter?  Is it possible to at least lockstep the Y's min/max?
>
>
> On Nov 10, 2010, at 9:47 AM, Utkarsh Ayachit wrote:
>
>> Apply "Extract Subset" to extract a 1D section and then try using the
>> "Plot Data" filter. That will allow you to plot the raw attribute
>> data.
>>
>> The error message you get after the ExtractVOI is because ParaView is
>> trying to show the data in the 2D, you can ignore that. Simply hide
>> the "ExtractVOI" in the 2D view and apply Plot Data.
>>
>> Utkarsh
>>
>> On Wed, Nov 10, 2010 at 9:36 AM, Randy Heiland <heiland at indiana.edu> wrote:
>>> Hello ParaViewers,
>>>
>>> Is it possible to interactively plot horizontal points (actual scalar values, no interpolation) from a 2-D ImageData and show the associated line across the imagedata?  I had sort of asked this earlier and pointed to this page as reference:  http://mypage.iu.edu/~heiland/pv-stuff/
>>>
>>> thanks, Randy
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>