[Gnuplot-py-users] only z-values displayed

[Una B. <una...@uc...>]

Dear users,

I'm trying to plot a pm3d plot with this command calling the data.txt 
file but the only data which is displayed  is the z-axis.  I can see the 
z-gradient bar on the right but nothing for the x- and y-values in 
corresponding color.  Could you please help me so I will see the 
color-matrix of my data.
# set terminal png transparent nocrop enhanced font arial 8 size 420,320
# set output 'pm3d.png'
set view map
set style data pm3d
set style function pm3d
set title "Demo for clipping of 2 rectangles comes now. The xrange is 
[0:3]..."
set xlabel "Motif"
set xrange [ 0.00 : 3.00 ] noreverse nowriteback
set ylabel "Run"
set yrange [ 0 : 2 ]
set zrange [ 1 : 100 ] noreverse nowriteback
set pm3d implicit at b
splot 'data.txt'


data.txt has data like this

1 1 100
2 1 95
3 1 45

1 2 33
2 2 78
3 2 85

1 3 25
2 3 75
3 3 96

Many thanks for your help, Una