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0

I am trying to create a diagram which looks like this:

I have tried fitting a function with increasingly many nodes, but it does not look right (showing all 3 curves on the diagram to better illustrate):

documentclass[10pt,landscape,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage[UKenglish]{babel}

usepackage{tikz}



begin{document}



begin{tikzpicture} [scale = 0.5]



foreach p in {-5,...,5} node[circle,fill=green] at (p,2*rand)  (p) {};

draw [cyan, xshift=4cm] plot [smooth, tension=1] coordinates { (-5) (-4) (-3) (-2) (-1) (0) (1) (2) (3) (4) (5) };

draw [red, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (-3)  (-1)  (1)  (3)  (5) };

draw [blue, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (5)  };

end{tikzpicture}



end{document}

I have also tried creating nodes like this (ie with a defined function x^2+x+1 + "noise" instead:


foreach p in {-5,...,5} node[circle,fill=green] at (p, p * p + p + 1 + rand) (p) {};


but that does not work at all.

In any case my code forces me to list nodes manually, which is not great.

I guess I need a way of interpolating with increasingly higher degree polynomials ? But I am not sure how to do this.

tikz-pgf

share

edited 1 min ago

user3203476

asked 9 mins ago

user3203476user3203476

307111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  LaTeX-free advice: I would generate the data outside of LaTeX (Matlab, MS Excel, Python, etc.) and then plot the result (e. g. csv file, or the polynom in equation form) using pgfplots. These are the tools you would use in a real life scenario anyway and not LaTeX for mathematical problem solving.
  
  – Dr. Manuel Kuehner
  2 mins ago
  
  
  

  
  
  
  

add a comment | 

0

I am trying to create a diagram which looks like this:

I have tried fitting a function with increasingly many nodes, but it does not look right (showing all 3 curves on the diagram to better illustrate):

documentclass[10pt,landscape,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage[UKenglish]{babel}

usepackage{tikz}



begin{document}



begin{tikzpicture} [scale = 0.5]



foreach p in {-5,...,5} node[circle,fill=green] at (p,2*rand)  (p) {};

draw [cyan, xshift=4cm] plot [smooth, tension=1] coordinates { (-5) (-4) (-3) (-2) (-1) (0) (1) (2) (3) (4) (5) };

draw [red, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (-3)  (-1)  (1)  (3)  (5) };

draw [blue, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (5)  };

end{tikzpicture}



end{document}

I have also tried creating nodes like this (ie with a defined function x^2+x+1 + "noise" instead:


foreach p in {-5,...,5} node[circle,fill=green] at (p, p * p + p + 1 + rand) (p) {};


but that does not work at all.

In any case my code forces me to list nodes manually, which is not great.

I guess I need a way of interpolating with increasingly higher degree polynomials ? But I am not sure how to do this.

tikz-pgf

share

edited 1 min ago

user3203476

asked 9 mins ago

user3203476user3203476

307111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  LaTeX-free advice: I would generate the data outside of LaTeX (Matlab, MS Excel, Python, etc.) and then plot the result (e. g. csv file, or the polynom in equation form) using pgfplots. These are the tools you would use in a real life scenario anyway and not LaTeX for mathematical problem solving.
  
  – Dr. Manuel Kuehner
  2 mins ago
  
  
  

  
  
  
  

add a comment | 

I am trying to create a diagram which looks like this:

I have tried fitting a function with increasingly many nodes, but it does not look right (showing all 3 curves on the diagram to better illustrate):

documentclass[10pt,landscape,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage[UKenglish]{babel}

usepackage{tikz}



begin{document}



begin{tikzpicture} [scale = 0.5]



foreach p in {-5,...,5} node[circle,fill=green] at (p,2*rand)  (p) {};

draw [cyan, xshift=4cm] plot [smooth, tension=1] coordinates { (-5) (-4) (-3) (-2) (-1) (0) (1) (2) (3) (4) (5) };

draw [red, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (-3)  (-1)  (1)  (3)  (5) };

draw [blue, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (5)  };

end{tikzpicture}



end{document}

I have also tried creating nodes like this (ie with a defined function x^2+x+1 + "noise" instead:


foreach p in {-5,...,5} node[circle,fill=green] at (p, p * p + p + 1 + rand) (p) {};


but that does not work at all.

In any case my code forces me to list nodes manually, which is not great.

I guess I need a way of interpolating with increasingly higher degree polynomials ? But I am not sure how to do this.

tikz-pgf

share

edited 1 min ago

user3203476

asked 9 mins ago

user3203476user3203476

307111

documentclass[10pt,landscape,a4paper]{article}

usepackage[utf8]{inputenc}

usepackage[UKenglish]{babel}

usepackage{tikz}



begin{document}



begin{tikzpicture} [scale = 0.5]



foreach p in {-5,...,5} node[circle,fill=green] at (p,2*rand)  (p) {};

draw [cyan, xshift=4cm] plot [smooth, tension=1] coordinates { (-5) (-4) (-3) (-2) (-1) (0) (1) (2) (3) (4) (5) };

draw [red, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (-3)  (-1)  (1)  (3)  (5) };

draw [blue, xshift=4cm] plot [smooth, tension=1] coordinates { (-5)  (5)  };

end{tikzpicture}



end{document}

share

edited 1 min ago

user3203476

asked 9 mins ago

user3203476user3203476

307111

share

edited 1 min ago

user3203476

asked 9 mins ago

user3203476user3203476

307111

asked 9 mins ago

user3203476user3203476

307111

asked 9 mins ago

user3203476user3203476

307111