[Getdp] extracting data on mesh nodes that belongs to a line

[AZZABI ZOURAQ]

Hi , i'm a PHD student and i am working on an NDT technic based on 
electrothermal phenomenas. Currently ,I'm using getdp to simulate a 
nucelar defect case. I wanted to extract power density value over a line 
of my conducting domain. I used the following command  :

       x0 = (odef/2+(0.10712e-3/2)) ; y0 =pdef ; y1=-hp+pdef; z0 =0;
       Print [ roj2, OnLine{{x0,y0,z0}{x0,y1,z0}}{nbDivs}, File 
"Line_roj2phex.pos"] ;
       Print [ roj2, OnLine{{x0,y0,z0}{x0,y1,z0}}{nbDivs}, File 
"Line_roj2phex", Format Gnuplot] ;

Using this , i have interpolated values aver the chosen line. My goal is 
to have only values over the mesh nodes that belongs to the line  
(without interpolation values). Is there a way to do this using gmsh ?

Thanks,

Brahim