Joao,

This is pretty much the same format for all python executions of vmtkscripts.  
To see where I'm getting this, look at the 'Variable' column of the vmtk 
scripts reference<http://www.vmtk.org/VmtkScripts/vmtkscripts> for a particular 
function.

At the beginning of your scripts:

from vmtk import vmtkscripts

read in file:

reader = vmtkscripts.vmtkSurfaceReader()
reader.InputFileName = 'foo.vtp'
reader.Execute()

Create a float list of the source and seed points:

centerlines = vmtkscripts.vmtkCenterlines()
centerlines.Surface = reader.Surface
centerlines.Execute()

write your surface:

writer = vmtkscripts.vmtkSurfaceWriter()
writer.Surface = centerlines.Centerlines
writer.OutputFileName = 'foo_centerlines.vtp'
writer.Execute()


Ben


On Jul 31, 2012, at 8:35 AM, João Domingos 
<joao.sousa.domin...@gmail.com<mailto:joao.sousa.domin...@gmail.com>> wrote:

Dear vmtk users,

Does anyone know how to use/call the following line in python? Also, where can 
I introduce the seeds in the same line so everything is done automatically in 
one line??

vmtkcenterlines -ifile foo.vtp -ofile foo_centerlines.vtp


Many thanks,
Joao
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