Re: [Gnuplot-info] Print y-values at (local) extremes

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

the last case is 'easy':

plot "datafilename" with linespoints, \
"" using 1:2:(strlen("".stringcolumn(4)."")?("".stringcolumn(4)."" eq
"Y")?stringcolumn(2):"":"") w labels offset 0,-1 rotate notitle, \
"" using 1:2:(strlen("".stringcolumn(4)."")?("".stringcolumn(4)."" eq
"y")?stringcolumn(2):"":"") w labels offset 0,1 rotate notitle


LukasP wrote:
> 
> Hello,
> 
> is there a way GNUplot to write y-values at places where the y-value is a
> (local) extreme?
> 
> - Let's have a datafile with x and y values:
> 
> # x y
> 1 5
> 2 6
> 3 8
> 4 4
> 8 11
> 10 10
> 
> Than the y(x) plot of these data will have local maximum at [2; 6] and [8;
> 11] and the local minimum at [4; 4].
> 
> And I'm looking for a way that GNUplot would write "6" and "11" above
> points of local maximums and "4" above the local minimum.
> 
> Is it possible somehow?
> 
> - I know special cases should be solved - e.g. data:
> 
> 0 5
> 2 6
> 3 6
> 4 6
> 5 2
> 
> It should be decided whether the [2; 6], [3; 6] and/or [4; 6] are extremes
> as well; but this is not the main question.
> 
> Or, is it possible the datafile to contain a special mark at points where
> the y-values are wanted to be written? E.g.:
> 
> # x y
> 1 5
> 2 6
> 3 8 # y
> 4 4 # Y
> 8 11 # y
> 10 10
> 
> Which should mean: when plotting - "# y" => "write the y-value above", "#
> Y" => "write the y-value bellow"?
> 
> See also the attachment for the wanted effect.
> 
> Thank you in advance.
> 
> Lukas
>  http://www.nabble.com/file/p25925173/Clipboard01.png Clipboard01.png 
> 

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