[Gnuplot-info] "All points x value undefined"

[Giacomo M. <gia...@em...>]

Hello everyone,

I'm trying to plot contour lines from a file.

The commands I'm using are:

set terminal postscript eps enhanced solid color
set autoscale
set xlabel "R"
set ylabel "z"
set size ratio -1
set view 0,0
unset surface
unset key
unset title
set contour
set cntrparam levels incremental 0.1,0.02,50
set output "output.eps"
splot "r_z0.dat" with lines
set size ratio 0


and the file "r_z0.dat" looks like

-0.23630E+01    0.00000E+00    0.76950E-07
  -0.23630E+01    0.18461E-01    0.75733E-07
  -0.23630E+01    0.36922E-01    0.73310E-07
  -0.23630E+01    0.15322E+01    0.00000E+00
  -0.23630E+01    0.15507E+01    0.00000E+00
  -0.23630E+01    0.15692E+01    0.00000E+00
  -0.23630E+01    0.15876E+01    0.00000E+00
  -0.23630E+01    0.16061E+01    0.00000E+00
  -0.23630E+01    0.16246E+01    0.00000E+00
  -0.23630E+01    0.16430E+01    0.00000E+00
  -0.23630E+01    0.16615E+01    0.00000E+00
  -0.23630E+01    0.16799E+01    0.00000E+00
  ecc.
  -0.23630E+01    0.21784E+01    0.00000E+00
  -0.23630E+01    0.21968E+01    0.00000E+00
  -0.23630E+01    0.22153E+01    0.00000E+00
  -0.23630E+01    0.22338E+01    0.00000E+00
  -0.23630E+01    0.22522E+01    0.00000E+00
  -0.23630E+01    0.22707E+01    0.00000E+00
  -0.23630E+01    0.22891E+01    0.00000E+00
  -0.23630E+01    0.23076E+01    0.00000E+00
  -0.23630E+01    0.23261E+01    0.00000E+00
  -0.23630E+01    0.23445E+01    0.00000E+00

  -0.23445E+01    0.00000E+00    0.23269E-06
  -0.23445E+01    0.18461E-01    0.23145E-06
  -0.23445E+01    0.36922E-01    0.22897E-06
  -0.23445E+01    0.55383E-01    0.22545E-06
  -0.23445E+01    0.73843E-01    0.22097E-06
  -0.23445E+01    0.92304E-01    0.21524E-06
  -0.23445E+01    0.11077E+00    0.20825E-06
  -0.23445E+01    0.12923E+00    0.19997E-06
  -0.23445E+01    0.14769E+00    0.19042E-06
  -0.23445E+01    0.16615E+00    0.17968E-06
  -0.23445E+01    0.18461E+00    0.16793E-06
  -0.23445E+01    0.20307E+00    0.15485E-06
  -0.23445E+01    0.22153E+00    0.14042E-06
  -0.23445E+01    0.23999E+00    0.12462E-06
  -0.23445E+01    0.25845E+00    0.10746E-06
  -0.23445E+01    0.27691E+00    0.88923E-07
  -0.23445E+01    0.29537E+00    0.69146E-07
ecc.

And I get an error message like :

"commands.txt", line 13: warning: Skipping unreadable file "r_z0.dat"
"commands.txt", line 13: warning: Axis range undefined due to improper  
data values. NaN? Inf?
splot "r_z0.dat" with lines
                                               ^
"commands.txt", line 13: All points x value undefined



Any idea of what could it be?

Note: it used to work. Recently I upgraded Gnuplot to v. 4.2 and I'm  
not using anymore ifort as a Fortran compiler to create the  
executables that give me those data files, but gfortran. But since  
I've done both things together I don't know if it's Gnuplot 4.2 fault  
or gfortran fault...


Thanks in advance!

Giacomo