To discussion in http://stackoverflow.com/questions/2824478/

set view equal xyz

set title "data/1tqn"
set view equal xyz
set key outside
set ticslevel 0.0
splot '-' with lines title "start-end line", \
      '-' with lines title "best fitting line", \
      '-' with lines title "closestDistanceBetweenLines, clampAll=True", \
      '-' with lines title "closestDistanceBetweenLines, clampAll=False"
-28.214 -13.975 -22.883
-25.908 -1.072 -30.708
e
-26.33677521 -13.56724197 -24.49373001
-21.34715042  -4.50552338 -33.92712265
e
-28.2140007 -13.97500038 -22.88299942
-26.33677521 -13.56724197 -24.49373001
e
-28.87350082 -17.66517067 -20.64510345
-28.52857465 -17.54779572 -20.34991047
e