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contour in gnuplot

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my script:::

# Set terminal and output 
set terminal postscript enhanced color 
set output 'plot.ps' 
# Set various features of the plot 
set pm3d 
unset surface  # don't need surfaces 
set view map 
set contour 
set key outside 
set cntrparam cubicspline  # smooth out the lines 
set cntrparam levels 50    # sets the num of contour lines 
set pm3d interpolate 20,20 # interpolate the color 
# Set a nice color palette 
set palette model RGB defined ( 0"black", 1"blue", 
2"cyan",3"green",4"yellow",\ 
     5"red",8"purple" ) 
# Axes 
set xlabel 'X' 
set ylabel 'Y' 
set format x '%.1f' 
set format y '%.1f' 
set format z '%.2f' 
set size square 
# Now plot 
splot 'data.dat' using 1:2:3 notitle with lines lt 1

data file :::

 0.00000 0.00000 0.00000 
 0.10000 0.00000 0.00000 
 0.20000 0.00000 0.00000 
 0.30000 0.00000 0.00000 
 0.40000 0.00000 0.00000 
 0.50000 0.00000 0.00000 
 0.60000 0.00000 0.00000 
 0.70000 0.00000 0.00000 
 0.80000 0.00000 0.00000 
 0.90000 0.00000 0.00000 
 1.00000 0.00000 0.00000 
 0.00000 0.10000 0.00000 
 0.10000 0.10000 0.00869 
 0.20000 0.10000 0.01654 
 0.30000 0.10000 0.02276 
 0.40000 0.10000 0.02676 
 0.50000 0.10000 0.02813 
 0.60000 0.10000 0.02676 
 0.70000 0.10000 0.02276 
 0.80000 0.10000 0.01654 
 0.90000 0.10000 0.00869 
 1.00000 0.10000 0.00000

in complation : erreur after compulation:::
"d.gnu", line 14: undefined variable: quot

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contour in gnuplot mohammed mouhcine <mohammed.mouhcine1@gmail.com> - 2016-11-11 13:11 -0800
  Re: contour in gnuplot Karl Ratzsch <mail.kfr@gmx.net> - 2016-11-12 08:47 +0100
    Re: contour in gnuplot mohammed mouhcine <mohammed.mouhcine1@gmail.com> - 2016-11-12 14:27 -0800

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