Hello! My problem is the following: I have a sorted sequence of "n" points (for each point I know the coordinates (x,y,z)) and now I should link each point "i" to the next point "i+1", just to draw a 'line'(in 3 dimensions..) composed of "n-1" segments...Can anyone tell me what tool should I use? Or any kind of suggest? (I think for example with Matlab it should be possible to do this, but I never worked with Matlab and I'm in crisis!!) Thanks for your help! -mauri-

The obvious quick and convenient way to do what you want is with gnuplot: gnuplot> splot "datafile" with lines This will bring up a rotatable, zoomable 3d cartesian coordinate system in a window with the polyline defined by the points in the text file "datafile" drawn in red. I can't help you with Matlab - I've used Scilab (similar syntax,capabilities etc.) but but even then I'm not sure how to draw 3d polylines with it.

Thank you very much Wolf!Now I searched Google for 'gnuplot' and I found this site: http://sourceforge.net/project/showfiles.php?group_id=2055&package_id=1996&release_id=231440 where I can download the software. But what file I have to choose? I'd prefer a version for MS Windows (compatible with XP)..Can you help me(again..)? Thank you! -mauri-

The gp400win32.zip file should be the right one. You'll see instructions and information in the README.Windows file.