Interpolating graph in gnuplot

Question

Im trying to plot a graph in gnu plot using this command

    plot 'temp.txt' using 1:3 title 'humidity' with lines smooth csplines,

   'temp.txt' using 1:2 title'temprature' with lines smooth splines

but the curves are not smooth enough as you can see in the image

I want the curves to be more smooth by interpolating the existing data.

Ethan · Accepted Answer · 2016-09-05 22:35:26Z

1

"smooth kdensity" will get you smoother curves, but it won't be from interpolation. The curves will not go exactly through any of the points.

answered Sep 5, 2016 at 22:35

Ethan

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Comments

Miguel · Accepted Answer · 2016-08-11 11:09:40Z

0

Your data sampling is probably higher than your csplines sampling. Try set samples 1000 before the plot command.

answered Aug 11, 2016 at 11:09

Miguel

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I did what you said but it doesn't make the graph smooth

@Khaadija Post your data file somewhere so that I can test it.