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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Nikhil,</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Build your own LUT and use this instead of the Mapper’s
default LUT. The hue range determines whether red is low or high. You will find
more information if you search the archives.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT = vtkLookupTable::New();</span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT ->SetNumberOfTableValues(
16 );</span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT ->SetHueRange(
0.66667, 0.0 );</span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT ->SetSaturationRange(
1, 1 );</span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT ->SetValueRange( 1, 1
);</span></font></p>
<p class=MsoNormal style='text-indent:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>m_vtkHSVLUT ->Build();</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>HTH</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>John.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> vtkusers-bounces@vtk.org
[mailto:vtkusers-bounces@vtk.org] <b><span style='font-weight:bold'>On Behalf
Of </span></b>nikhil butala<br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>13 July 2004</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>20:21</span></font><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> vtkusers@vtk.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [vtkusers] simple
scalar bar question.....</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>I am just using the
default lookup table.<br>
<br>
<b><i><span style='font-weight:bold;font-style:italic'>jarv0075
<jarv0075@umn.edu></span></i></b> wrote: </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>The order your values are
displayed are in accordance to the order they are<br>
in your lookup table. So if you would like to reverse them, just reverse<br>
your lookup table.<br>
<br>
<br>
On </span></font>13 Jul 2004, nikhil butala wrote:<br>
> --0-902519565-1089741581=:32351<br>
> Content-Type: text/plain; charset=us-ascii<br>
> <br>
> Dear VTK Users,<br>
> <br>
> In my application, By default VTK assigns red color to<br>
> 0(zero) value and blue color to the maximum value in scalar bar. <br>
> Does anyone know a simple method to reverse this. i.e. give blue color to<br>
> zero value and red to maximum value??<br>
> <br>
> thanks,<br>
> Nikhil Butala<br>
> <br>
> --0-902519565-1089741581=:32351<br>
> Content-Type: text/html; charset=us-ascii<br>
> <br>
> </p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Dear VTK Users,</span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> In<br>
> my application, By default VTK assigns red color to 0(zero) value and<br>
blue<br>
> color to the maximum value in scalar bar. </span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Does anyone know a simple
method to reverse this. i.e. give blue<br>
color<br>
> to zero value and red to maximum value??</span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>thanks,</span></font></p>
</div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Nikhil Butala</span></font></p>
</div>
<p class=MsoNormal style='margin-right:0cm;margin-bottom:12.0pt;margin-left:
36.0pt'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br>
> --0-902519565-1089741581=:32351--<br>
> <br>
---------------------------------------<br>
Timothy R. Jarvis <br>
---------------------------------------<br>
Graduate Research Assistant <br>
International Neuroimaging Consortium<br>
VA </span></font>Medical Center<br>
612-467-2619<br>
http://www.neurovia.umn.edu<br>
---------------------------------------</p>
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