Re: [Gnuplot-info] Problem with splot

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

> One more question...
>
> Since my graph consists of discrete points I would like to
> have a flat surface between the values (preferably in the
> xy-plane). Is this possible?
>
> (I.e. I would like to have a "cone" for each matrix element,
> but with a flat surface between the elements.)
>
> Its hard to explain...

you are looking for a  3d bar chart or lego plot.
well, that's not possible, AFAIK, but a poor man's
solution would be:

you may use impulses:

splot "filename.dat" matrix w imp lw 5

to have a surface at z=0:

set iso 6,6
splot "filename.dat" matrix w imp lw 5, 0

or

set iso 6,6
splot "filename.dat" matrix us 1:2:($3<0?$3:0) w imp lc 3 lw 10, 0, ""
matrix us 1:2:($3>0?$3:0) w imp lc 1 lw 10

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