[Gnuplot-info] Problems drawing matrix with pm3d

[Roger P. M. <ro...@gm...>]

Hello,

I'm having some problems plotting a matrix using pm3d, I have a simple
file with the following lines

0 1
1 0

But when I plot it I only get an image that ranges from 0 to 1 in x
and y axis, I've included a sample of the output. I would like to get
an output that ranges from 0 to 2 in both axes and with 2 black and
two yellow/white blocks (representing the input matrix). The code used
to generate the image is the following:

set terminal svg
set output "coeffs.svg"
set autoscale
set title "Non null coefficients in DCT matrix"
set pm3d map
set size square
set palette rgbformulae 30,31,32
splot "./data.dat" matrix title ""

Thanks, Roger.