set output 'dist_ceph_rv_nice.ps' 
set term postscript enhanced color 'Helvetica,18'  
set grid 
set key top right 
set xlabel 'Distance (Megaparsecs) ' 
set ylabel 'Radial Velocity (km/sec)' 
set title 'Galaxies with Cepheid distance measurements (ApJS 128, 431, 2000) ' 
plot [0:25][-500:2300] 'dist_ceph_rv.dat' using (1E-6*(10**(($4+5)/5))):($7)   with points  lw 3 lc 1 pt 1 ps 2 t  ''    
set output 
quit 
