Re: [Gnuplot-info] Problem with splot

[Thomas S. <t.s...@fz...>]

with 'set dgrid3d 70,70' you are interpolating over the matrix
with an inappropriate grid.

the arguments to 'set dgrid3d' should be:
n * (number_of_xdata - 1) + 1
n * (number_of_ydata - 1) + 1

otherwise your interpolation grid will not contain the data points
you have given.

> I want to graph a surface in gnuplot of the following matrix:
>
> 0 0 0 0 0 0	
> 0 0.00641154 0.01751273 0.01554609 0.00609739 0
> 0 -3.502E-05 0.009302	0.02995384	0.01733484	0	
> 0 0.02041813 0.03013938 -0.17901065 -0.18546722	0
> 0 0.00014728 0.00946959 0.03005793 0.01772059 0
> 0 0 0 0 0 0
>
> I use the following settings:
>
> unset surface
> set terminal windows color enhanced
> set ticslevel 0
> set xtics(" " 0, "1" 1, "2" 2, "3" 3, "4" 4, " " 5)
> set ytics(" " 0, "1" 1, "2" 2, "3" 3, "4" 4, " " 5)
> set grid
> set dgrid3d 70,70
> set pm3d
> splot "filname.txt" matrix
> 
> (filename.txt = matrix)
> 
> The problem is that the plot doesn't show the correct values.

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