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<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I set up my vtkImageReader2 in <span class=SpellE>Tcl/Tk</span>
like this:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>vtkImageReader2</span></font></span><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> reader<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetDataSpacing</span> $<span
class=SpellE>lengthXvoxel</span> $<span class=SpellE>lengthYvoxel</span> $<span
class=SpellE>lengthZvoxel</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetDataExtent</span> 0 [<span
class=SpellE>expr</span> $Xdim-1] 0 [<span class=SpellE>expr</span> $Ydim-1] $<span
class=SpellE>Zstart</span> $<span class=SpellE>Zend</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>if</span> {$<span class=SpellE>dataType</span>=="short"}
{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:2'> </span><span
class=GramE>reader</span> <span class=SpellE>SetDataScalarTypeToShort</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>}
else {<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:2'> </span><span
class=GramE>reader</span> <span class=SpellE>SetDataScalarTypeToFloat</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span>}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetDataByteOrderToLittleEndian</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetFilePrefix</span> $<span
class=SpellE>dataDir</span> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetFilePattern</span> $<span
class=SpellE>filepattern</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> <span class=SpellE>SetProgressMethod</span> {set
progress [reader <span class=SpellE>GetProgress</span>];<span class=SpellE>setProgress</span>
$progress \<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:5'> </span>"Loading
Files:<span style='mso-spacerun:yes'> </span>[<span class=SpellE>expr</span>
$progress*100<span class=GramE>]%</span>"; update}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>reader</span> Update<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Then when I pass the reader to a <span class=SpellE>vtkImageReslice</span>
no matter what I input for the <span class=SpellE>DataSpacing</span> in the
reader, the <span class=SpellE>Reslice</span> object it thinks the DataSpacing
is {1e038 1e038 1e038}.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Why does the data spacing not get passed along?<span
style='mso-spacerun:yes'> </span>I saw another email where someone
suggested using <span class=SpellE>vtkImageReslice</span> to reset the <span
class=SpellE>DataSpacing</span>. <span style='mso-spacerun:yes'> </span>I
can do this and it works, but I don’t understand why setting the spacing
in the reader shouldn’t work.<span style='mso-spacerun:yes'>
</span>If the <span class=SpellE>ImageReader</span> doesn’t pass the data
that it has along to the next filter then the method shouldn’t be there.<span
style='mso-spacerun:yes'> </span>Maybe I am just misusing the class?<span
style='mso-spacerun:yes'> </span>Any help would be appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Kate Kerekes<o:p></o:p></span></font></p>
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