[mnajafi]

Dear friends
I am modeling a system particles (say 50,000) using an in-house code written in Matlab. Matlab plotting tools are very slow with low quality graphics. I need to generate a text file which contains information of particles (including x,y,z and diameter of each particle) to load into Tecplot or Paraview. I didn't find a template file on the net. Would someone post me a template file or describe the right format which is acceptable by one of these two post processing software?
Thanks very much