[vtkusers] write dataset in VTK format

[Madhusudhanan Balasubramanian]

Hi Mathieu,

1. With latest patches, vtkStructuredPointsWriter now works with 'signed char' data types for creating both ASCII and binary image formats.  (You are right, ASCII files about 3 times larger than binary).
2. GDCM latest patches compile without any errors.

Great thanks so much for all the help.

Madhu.

--- On Tue, 9/16/08, Mathieu Malaterre <mathieu.malaterre at gmail.com> wrote:

> From: Mathieu Malaterre <mathieu.malaterre at gmail.com>
> Subject: Re: [vtkusers] write dataset in VTK format
> To: madhu_lsu at yahoo.com
> Cc: "VTK users" <vtkusers at vtk.org>
> Date: Tuesday, September 16, 2008, 10:15 AM
> My fault, I misread the code, you still need the patch I
> commited to
> CVS HEAD a couple of minutes ago :( It is handling both
> ASCII and
> binary.
> 
> vtkXMLImageWriter + Binary should work though
> (hopefully...)
> 
> 
> 
> On Tue, Sep 16, 2008 at 5:10 PM, Madhusudhanan
> Balasubramanian
> <madhu_lsu at yahoo.com> wrote:
> > Mathieu,
> >
> > I have set
> "imageWriter->SetFileTypeToBinary();" for the
> vtkStructuredPointsWriter.  But I am still getting these
> errors.  I guess the second error is just cascaded from the
> first one.
> >
> > ERROR: In
> ..\..\..\Programs\VTK5.2\IO\vtkDataWriter.cxx,
> line 1139
> > vtkStructuredPointsWriter (04C14C70): Type currently
> not supported
> >
> > ERROR: In
> ..\..\..\Programs\VTK5.2\IO\vtkStructuredPointsWriter.cxx,
> line 90
> > vtkStructuredPointsWriter (04C14C70): Ran out of disk
> space; deleting file:
> E:/Madhu/DataFiles/GDCM/testWrite/tempData.vti
> >
> > Madhu.
> >
> >
> > --- On Tue, 9/16/08, Mathieu Malaterre
> <mathieu.malaterre at gmail.com> wrote:
> >
> >> From: Mathieu Malaterre
> <mathieu.malaterre at gmail.com>
> >> Subject: Re: [vtkusers] write dataset in VTK
> format
> >> To: madhu_lsu at yahoo.com
> >> Cc: "VTK users" <vtkusers at vtk.org>
> >> Date: Tuesday, September 16, 2008, 9:58 AM
> >> Madhu,
> >>
> >>   I found the issue, it would only happen in
> ASCII:
> >>
> >> $ cvs ci -m"ENH: Handle ASCII signed char
> too. Fix bug
> >> for char. Need
> >> to write unsigned char when char type is
> unsigned"
> >> vtkDataWriter.cxx
> >> /cvsroot/VTK/VTK/IO/vtkDataWriter.cxx,v  <--
> >> vtkDataWriter.cxx
> >> new revision: 1.136; previous revision: 1.135
> >>
> >>   you should really save your vtkImageData as
> binary:
> >> 1. it will work out of the box for you
> >> 2. it will be so much faster
> >>
> >> 2cts
> >>
> >> On Tue, Sep 16, 2008 at 4:43 PM, Mathieu Malaterre
> >> <mathieu.malaterre at gmail.com> wrote:
> >> > What ? do you have a way to reproduce the
> problem ?
> >> >
> >> > thx
> >> >
> >> > On Tue, Sep 16, 2008 at 4:30 PM,
> Madhusudhanan
> >> Balasubramanian
> >> > <madhu_lsu at yahoo.com> wrote:
> >> >> Hi Mathieu,
> >> >>
> >> >> The problem with
> vtkStructuredPointsWriter is that
> >> it doesn't support signed char type data.
> >> >>
> >> >> Madhu.
> >> >>
> >> >>
> >> >> --- On Tue, 9/16/08, Mathieu Malaterre
> >> <mathieu.malaterre at gmail.com> wrote:
> >> >>
> >> >>> From: Mathieu Malaterre
> >> <mathieu.malaterre at gmail.com>
> >> >>> Subject: Re: [vtkusers] write dataset
> in VTK
> >> format
> >> >>> To: madhu_lsu at yahoo.com
> >> >>> Date: Tuesday, September 16, 2008,
> 2:13 AM
> >> >>> vtkStructuredPointsWriter should do
> the trick.
> >> >>>
> >> >>> AFAIK you can still use
> vtkXMLImageDataWriter
> >> but you need
> >> >>> to specify
> >> >>> Binary option (in which case file
> will not be
> >> a valid XML
> >> >>> file), by
> >> >>> default it is using mime64 encoding
> (required
> >> by XML
> >> >>> specs).
> >> >>>
> >> >>> 2cts
> >> >>>
> >> >>> On Tue, Sep 16, 2008 at 5:53 AM,
> Madhusudhanan
> >> >>> Balasubramanian
> >> >>> <madhu_lsu at yahoo.com> wrote:
> >> >>> > Hi,
> >> >>> >
> >> >>> > Can someone suggest a suitable
> class to
> >> write
> >> >>> (vtkImageData*) of size 1024x200x200
> into a
> >> VTK format file
> >> >>> (.vti or .vtk)?  I tried
> >> vtkXMLImageDataWriter, but the data
> >> >>> file is almost 6 times the original
> size with
> >> this class.  I
> >> >>> appreciate the help.
> >> >>> >
> >> >>> > Madhu.
> >> >>> >
> >> >>> >
> >> >>> >
> >> >>> >
> >> _______________________________________________
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> >> >>> >
> >> >>>
> >> >>>
> >> >>>
> >> >>> --
> >> >>> Mathieu
> >> >>
> >> >>
> >> >>
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > Mathieu
> >> >
> >>
> >>
> >>
> >> --
> >> Mathieu
> >
> >
> >
> >
> 
> 
> 
> -- 
> Mathieu