Re: [Gnuplot-info] howto do a surface plot with contour lines and dots for the original data points

[Ethan M. <eam...@gm...>]

splot "data.text" u 1:2:3 w pm3d, "" u 1:2:3 w p pt 7 nocontour

On Tue, Nov 29, 2016 at 5:59 AM, Lorenz <lor...@ya...> wrote:

> Hello all,
>
> I'm trying to create a 3D surface plot with contour lines and overlay
> it with dots denoting the original data points
>
> what I've got so far is the following:
>
> >set contour both
> >set cntrparam levels incremental 0,10,100
> >splot "data.text" u 1:2:3 w pm3d, "" u 1:2:3 w p pt 7
>
> That's almost what I want, besides the that dots on the contour lines
> (both on the contour lines themself and on there projection).
>
>
> If I reduce the splot command to:
>
> >set contour both
> >set cntrparam levels incremental 0,10,100
> >splot "data.text" u 1:2:3 w pm3d
>
> I get the plot without any points. Adding the "w p" part adds the
> lines both to the data points, as to the contourlines.
>
> Using only the second part:
>
> >set contour both
> >set cntrparam levels incremental 0,10,100
> >splot "data.text" u 1:2:3 w p pt 7
>
> results in only (but all) the dots I get from the combined command.
>
> So it looks like I need to "unset contour" between the two parts of
> the splot command.
> Is this possible? Or do I need a different approach altogether?
> --
>
> Lorenz
>
>
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