[vtkusers] axis equal for vtk?

[Imre Goretzki]

Cory,

is it possible to change the tick of the axes? Right know using the 
transform filter is equivalent to the second image. Unfortunately that 
is not what I would like to have. I think the best way to do this is to 
change to tick of the Z-Dimension.

The image has the dimensions 520x520x47. So the tick for x and y is 1, 
for z it should be 47/520. I don't want to change the data.

Imre

Am 04.12.2015 um 20:56 schrieb Cory Quammen:
> Imre,
>
> Your best bet is probably to transform the data itself rather than the 
> user transform of the actors.
>
> vtkSmartPointer<vtkTransformFilter> transformFilter = 
> vtkSmartPointer<vtkTransformFilter>::New();
> transformFilter->SetTransform(axis);
> transformFilter->SetInputData(<your input data>);
>
> HTH,
> Cory
>
> On Fri, Dec 4, 2015 at 1:48 PM, Imre Goretzki <goretzki.imre at gmail.com 
> <mailto:goretzki.imre at gmail.com>> wrote:
>
>     I have data like this:
>     http://i.imgur.com/CR2O8Ik.png
>     and I would like to "stretch" the Z-axis to get more like a cube
>     visualization.
>
>     I used vtkTransform to transform the axes, but I would change the
>     data if I do this. I hope you understand what I want to do, e.g.
>     is there a possibility to change / stretch the ticks of a specific
>     axis.
>
>     The vtkTransform plot stretches to much:
>     http://i.imgur.com/DDUW91T.png
>     The data is deformed
>
>     I use the vtkTransform like this:
>     vtkSmartPointer<vtkTransform> axis =
>     vtkSmartPointer<vtkTransform>::New();
>     axis->Scale(1,1,10);
>
>     dataActor->SetUserTransform(axis);
>     outlineActor->SetUserTransform(axis);
>
>     I tried using the camera with the vtkTransform, but the only thing
>     I got from there, was an empty image or I had to zoom out greatly.
>
>     For matlab reference, something like this:
>     http://de.mathworks.com/help/matlab/ref/axis.html?refresh=true
>
>     Would be nice if you could help me
>
>     Imre
>
>
>     Am 03.12.2015 um 22:20 schrieb Imre Goretzki:
>
>         Hey guys
>
>         i'd like to ask you if there's a equivalent method for
>         vtkRenderWindow for equalizing the axis, just like MATLABs
>         axis equal. Could vtkAxesActor be helpful?
>
>         I hope you can help
>
>         Thanks
>         Imre
>
>
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> -- 
> Cory Quammen
> R&D Engineer
> Kitware, Inc.

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