<html><head><style type="text/css"><!-- DIV {margin:0px} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>hello,</DIV>
<DIV>I'm using VTK in may Project for the MPR and MIPs fonctionnalities , and I'm faced to aprblem that I cannot analyse because it depends on the vtkStructuredPoints::AllocateScalars().</DIV>
<DIV>the problem is that after the declaration , the specification of the dimensions of the Volume , the allocation doesn't happen and I allways have a NULL pointer when I use the GetScalarPointer() function.</DIV>
<DIV>this is the instructions I do for the Volume creation :</DIV>
<DIV> data2=vtkStructuredPoints::New();<BR> data2->SetDimensions(WdthVlm,HghtVlm,DpthVlm); <BR> data2->SetSpacing (xsp, ysp, zsp);<BR> data2->SetScalarType(VTK_UNSIGNED_SHORT);<BR> data2->AllocateScalars();<BR> unsigned short * ptr2=(unsigned short *) data2->GetScalarPointer();</DIV>
<DIV> </DIV>
<DIV>//ptr2 is allways = = NULL</DIV>
<DIV>ths questions are :</DIV>
<DIV> in whitch conditions the allocation cannot happen?</DIV>
<DIV> how can I know if VTK did the allocation of the memory?</DIV>
<DIV> </DIV>
<DIV>NB: I have a 1Go of RAM and a 3Ghz µP! (and I'm sure that I have enough memory available and the scalars are really VTK_UNSIGNED_SHORT).</DIV>
<DIV> </DIV>
<DIV>thank you for your help !</DIV>
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