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<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>I am attempting to read in an existing file in vtk
format. I want to convert it<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>To my own format, and hence need to get the image
dimensions etc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>I've tried the following, but am not getting
sensible results (ie not in dataSet or imageData):<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><span class=GramE><font size=2
face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>vtkDataSetReader</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
*Reader = vtkDataSetReader::New();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span>Reader-><span
class=GramE>SetFileName(</span>filename);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>vtkDataSet</span> *<span class=SpellE>dataSet</span> = (<span
class=SpellE>vtkDataSet</span>*)<span class=SpellE>vtkDataSet::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>dataSet</span></span> = Reader-><span
class=SpellE>GetOutput</span>();<span style='mso-tab-count:1'> </span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>float</span> *bounds = <span class=SpellE>dataSet</span>-><span
class=SpellE>GetBounds</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>also</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-indent:.5in'><span class=SpellE><span
class=GramE><font size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;
font-family:Arial'>vtkStructuredPointsReader</span></font></span></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
*Reader = <span class=SpellE>vtkStructuredPointsReader::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span>Reader-><span
class=SpellE><span class=GramE>SetFileName</span></span><span class=GramE>(</span>filename);<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>vtkStructuredPoints</span></span> *<span
class=SpellE>dataSet</span> = <span class=SpellE>vtkStructuredPoints::New</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>dataSet</span></span> = Reader-><span
class=SpellE>GetOutput</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>vtkImageData</span></span> *<span class=SpellE>imageData</span>
= Reader-><span class=SpellE>GetOutput</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=GramE>float</span> *bounds = <span class=SpellE>dataSet</span>-><span
class=SpellE>GetBounds</span>();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><span style='mso-tab-count:1'> </span><span
class=SpellE><span class=GramE>int</span></span> *dim = <span class=SpellE>dataSet</span>->GetDimensions();<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>I realise I'm doing something fundamentally
wrong, but I'm not sure what, and I can't<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Seem to find an example that helps. Can anyone help? (Perhaps
my expectations are<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Wrong - for example, how should I extract the
numbers 512 486 and 41 if not <span class=GramE>from</span><o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>A call to GetDimensions?)</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>The file in question has header<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'># <span class=GramE>vtk</span> DataFile Version 2.0<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=GramE><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";mso-ansi-language:EN-US'>comments</span></font></span><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'> here<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>BINARY<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>DATASET STRUCTURED_POINTS<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>DIMENSIONS 512 486 41<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>ORIGIN 0 0 0<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>SPACING 0.51 1.62 24.39<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>POINT_DATA 10202112<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>SCALARS scalars unsigned_short<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
mso-ansi-language:EN-US'>LOOKUP_TABLE default<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>And I can read it in OK via a sample program (which
however passes a<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>vtkDataSetReader <span
style='mso-spacerun:yes'> </span>object's</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>
output straight to<span style='mso-spacerun:yes'> </span>a vtkDataSetMapper,
rather than extracting values<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=2 face=Arial><span lang=EN-AU
style='font-size:10.0pt;font-family:Arial'>directly</span></font></span><font
size=2 face=Arial><span lang=EN-AU style='font-size:10.0pt;font-family:Arial'>).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Thanks in advance,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-AU style='font-size:
10.0pt;font-family:Arial'>Nerolie<o:p></o:p></span></font></p>
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