Great, that works perfectly, thanks.<br><br><div class="gmail_quote">On Sun, Dec 26, 2010 at 11:36 AM, David Gobbi <span dir="ltr"><<a href="mailto:david.gobbi@gmail.com">david.gobbi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi Jonathan,<br>
<br>
You have to go one level deeper with the Modified() call.<br>
Here is the recipe, both modified calls are necessary:<br>
<br>
image.Modified()<br>
image.GetPointData().GetScalars().Modified()<br>
range = image.GetScalarRange()<br>
<br>
This is because both vtkImageData and vtkDataArray have<br>
their own timestamps.<br>
<font color="#888888"><br>
- David<br>
</font><div><div></div><div class="h5"><br>
<br>
<br>
On Sun, Dec 26, 2010 at 12:08 PM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>> wrote:<br>
> I tried this, and after invoking Modified() on the image data, the scalar<br>
> range is still [0, 0].<br>
><br>
> On Sun, Dec 26, 2010 at 10:15 AM, Karthik Krishnan<br>
> <<a href="mailto:karthik.krishnan@kitware.com">karthik.krishnan@kitware.com</a>> wrote:<br>
>><br>
>> GetScalarRange will re-compute the scalar range only if the image has been<br>
>> modified. It has time stamps internally to avoid re-computing the scalar<br>
>> range during every call to GetScalarRange().<br>
>><br>
>> The method SetScalarComponentFromDouble does not change the MTime of the<br>
>> image for efficiency.<br>
>><br>
>> Invoke Modified() on the image and then invoke GetScalarRange() and you<br>
>> should see it update.<br>
>><br>
>><br>
>> --<br>
>> karthik<br>
>><br>
>><br>
>><br>
>> On Sun, Dec 26, 2010 at 11:19 PM, Sebastien Jourdain<br>
>> <<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>> wrote:<br>
>>><br>
>>> I have no idea on the expected behavior... And I'm not much familiar<br>
>>> with imageData...<br>
>>><br>
>>> Sorry,<br>
>>><br>
>>> Seb<br>
>>><br>
>>> On Sun, Dec 26, 2010 at 6:27 PM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>><br>
>>> wrote:<br>
>>> > This would appear to work, but after<br>
>>> > calling .SetScalarComponentFromDouble(x, y, z, 0, 1) the<br>
>>> > image.GetScalarRange() still returns [0, 0] which, I would assume, it<br>
>>> > shouldn't. Am I doing something wrong?<br>
>>> ><br>
>>> > On Sun, Dec 26, 2010 at 8:47 AM, Sebastien Jourdain<br>
>>> > <<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>> wrote:<br>
>>> >><br>
>>> >> If you have a scalar range on the data array and if the min/max are<br>
>>> >> equal to 0, you are done...<br>
>>> >><br>
>>> >> Seb<br>
>>> >><br>
>>> >> On Mon, Dec 20, 2010 at 6:15 PM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>><br>
>>> >> wrote:<br>
>>> >> > Is there a way to quickly tell if a vtkImageData is blank (contains<br>
>>> >> > all<br>
>>> >> > 0's)? I can't iterate the pixels cause I'm in Java and that's too<br>
>>> >> > slow.<br>
>>> >> > _______________________________________________<br>
>>> >> > Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
>>> >> ><br>
>>> >> > Visit other Kitware open-source projects at<br>
>>> >> > <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
>>> >> ><br>
>>> >> > Please keep messages on-topic and check the VTK FAQ at:<br>
>>> >> > <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
>>> >> ><br>
>>> >> > Follow this link to subscribe/unsubscribe:<br>
>>> >> > <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
>>> >> ><br>
>>> >> ><br>
>>> ><br>
>>> ><br>
>>> _______________________________________________<br>
>>> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
>>><br>
>>> Visit other Kitware open-source projects at<br>
>>> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
>>><br>
>>> Please keep messages on-topic and check the VTK FAQ at:<br>
>>> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
>>><br>
>>> Follow this link to subscribe/unsubscribe:<br>
>>> <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
>><br>
><br>
><br>
> _______________________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Please keep messages on-topic and check the VTK FAQ at:<br>
> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
> <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
><br>
><br>
</div></div></blockquote></div><br>