[Paraview] using binary files

[Giuseppe Gariup]

Hi everybody:
  I am using paraview to display the output of a finite element
program. I need to write the xml file and I'd rather use the binary
format to input the points of the mesh. I am using C++. The question
is: I have a vector with the coordinates of the points and I have to
put it in the xml file. Has any of you faced a similar situation?

bye