gnuplot-info

[Gnuplot-info] Function plot with changing color

[Paul W. <pau...@gm...>]

Hello,

how can I plot a function and vary its color within the plot?  The only 
solution I've come up with is to write the x and y values to a file and 
read it back using 'linecolor rgb variable'.  Is there a more elegant 
way, without writing a file?

Thanks,

Paul

Re: [Gnuplot-info] Function plot with changing color

[Ethan A M. <EAM...@gm...>]

On Thursday, 28 March 2013, Paul Wagner wrote:
> Hello,
> 
> how can I plot a function and vary its color within the plot?  

What do you want the color to depend on?

> The only solution I've come up with is to write the x and y values to a file and 
> read it back using 'linecolor rgb variable'.  Is there a more elegant 
> way, without writing a file?

set xrange [XMIN:XMAX]
plot '+' using 1:(f($1)):(color($1)) lc rgb variable

where f(x) is the function you want to plot
and  color(x) returns the color you want it to have.