Hi Elaine,
 centerlines work exactly like surfaces, in the sense that you can write 
them out using vmtksurfacewriter, with the extra-caveat that you have to pipe 
the output to the writer explicitly, this way:

vmtkcenterlines -ifile foo.vtp [...other options...] --pipe vmtksurfacewriter 
-i @.o -mode ascii -ofile foo.vtk

To learn more about piping, read the basic pypes tutorial on vmtk.org

Best,

Luca


On Mar 4, 2013, at 8:56 PM, Elaine Tang wrote:

> HI Luca,
> 
> Thank you for your reply. What if I am trying to write centerlines and 
> bifurcation as .vtk (instead of surface)? Those functions (e.g. 
> vmtkcenterlines) don't seem to have the 'mode' option.
> 
> Thanks!
> Elaine
> 
> On 4 March 2013 07:28, Luca Antiga <luca.ant...@orobix.com> wrote:
> Hi Elaine,
>  just use an explicit writer script and specify -mode ascii as an option, like
> 
> vmtksurfacesmoothing -ifle foo.vtp --pipe vmtksurfacewriter -ofile foo.vtk 
> -mode ascii
> 
> Best,
> 
> Luca
> 
> 
> On Mar 3, 2013, at 11:41 PM, Elaine Tang wrote:
> 
> > Hi,
> >
> > I recently installed VMTK on my RHEL 5 linux OS. Everything seems to run 
> > smoothly. However, whenever I try to output as ".vtk", it defaults to 
> > output as binary files. Is there any way to make it output as ASCII file as 
> > default?
> >
> > Thanks!
> > --
> > Elaine Tang
> > ------------------------------------------------------------------------------
> > Everyone hates slow websites. So do we.
> > Make your web apps faster with AppDynamics
> > Download AppDynamics Lite for free today:
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> 
> 
> 
> 

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