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Draw one function, varying color by (gradient) using another function's value

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5

I'm trying to draw something in TikZ where I want to vary the draw color.

E.g. I'm drawing this line

documentclass[tikz]{standalone}

usetikzlibrary{intersections}

begin{document}

begin{tikzpicture}

draw plot[variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{tikzpicture}

end{document}

But now I want the color to indicate the value of a function, e.g. c = x².

Edit:
With x² this could then look like:

tikz-pgf color

share|improve this question

edited 3 hours ago

sheß

asked 4 hours ago

sheßsheß

1,73311328

add a comment | 

5

I'm trying to draw something in TikZ where I want to vary the draw color.

E.g. I'm drawing this line

documentclass[tikz]{standalone}

usetikzlibrary{intersections}

begin{document}

begin{tikzpicture}

draw plot[variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{tikzpicture}

end{document}

But now I want the color to indicate the value of a function, e.g. c = x².

Edit:
With x² this could then look like:

tikz-pgf color

share|improve this question

edited 3 hours ago

sheß

asked 4 hours ago

sheßsheß

1,73311328

add a comment | 

I'm trying to draw something in TikZ where I want to vary the draw color.

E.g. I'm drawing this line

documentclass[tikz]{standalone}

usetikzlibrary{intersections}

begin{document}

begin{tikzpicture}

draw plot[variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{tikzpicture}

end{document}

But now I want the color to indicate the value of a function, e.g. c = x².

Edit:
With x² this could then look like:

tikz-pgf color

share|improve this question

edited 3 hours ago

sheß

asked 4 hours ago

sheßsheß

1,73311328

documentclass[tikz]{standalone}

usetikzlibrary{intersections}

begin{document}

begin{tikzpicture}

draw plot[variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{tikzpicture}

end{document}

share|improve this question

edited 3 hours ago

sheß

asked 4 hours ago

sheßsheß

1,73311328

share|improve this question

edited 3 hours ago

sheß

asked 4 hours ago

sheßsheß

1,73311328

asked 4 hours ago

sheßsheß

1,73311328

asked 4 hours ago

sheßsheß

1,73311328

1 Answer
1

active

oldest

votes

4

Something like this may be:

documentclass[tikz]{standalone}

usepackage{pgfplots}

begin{document}

begin{tikzpicture}

begin{axis}

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}

end{tikzpicture}

end{document}

I just changed the draw environment with addplot within an axis environment. This will give you:

Update Fix with colormaps. By utilising the colormaps tikz library you can set the desired color map and obtain what you desire. As in:

documentclass[tikz]{standalone}

usepackage{pgfplots}

 usepgfplotslibrary{colormaps}

% Note that this is the colormap definition. You can play with this however you want. Fun fact: this color map also includes 8bit color code definition. Which can be defined using rgb255 = {value,value,value}.

pgfplotsset{colormap={CM}{rgb=(0,0,1) color=(red) rgb=(0,0,1)}}

begin{document}

begin{tikzpicture}

begin{axis}[point meta = y, colormap name={CM}]

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}



end{tikzpicture}

end{document}

which will give you:

Update Credits goes to @marmot.

You can an inline function in point meta definition to customise your colormap implicitly using an explicit function (see @marmot's comments).

documentclass[tikz]{standalone}

usepackage{pgfplots}



begin{document}

    begin{tikzpicture}

    begin{axis}

    [ colormap/hot] addplot [point meta = x*x*x,mesh, samples=100,domain=-10:10] {sin(deg(x))+0.6*x};

    end{axis}

    end{tikzpicture}

end{document}

Here, I used cubic function for manipulating the color map. This will give

share|improve this answer

edited 45 mins ago

answered 4 hours ago

RaajaRaaja

4,28121138

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Thanks, but I think this misses the bit that the color gradient should depict this a function, (in my question i used the example of x^2)
  
  – sheß
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @sheß Nice that it is close, but could you please explain me the last part? I will try to help you with that :) may be you can draw a small rough sketch on what you would like to get out of it?
  
  – Raaja
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  clear thanks I will try to cook up something
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @sheß OOps, in that case, I will wait for some our in house TikZperts to answer your question ;)
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Done adding, lately, falcons are going well together with @marmot.
  
  – Raaja
  44 mins ago
  

  
  
  
  

 | 
show 6 more comments

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4

Something like this may be:

documentclass[tikz]{standalone}

usepackage{pgfplots}

begin{document}

begin{tikzpicture}

begin{axis}

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}

end{tikzpicture}

end{document}

I just changed the draw environment with addplot within an axis environment. This will give you:

Update Fix with colormaps. By utilising the colormaps tikz library you can set the desired color map and obtain what you desire. As in:

documentclass[tikz]{standalone}

usepackage{pgfplots}

 usepgfplotslibrary{colormaps}

% Note that this is the colormap definition. You can play with this however you want. Fun fact: this color map also includes 8bit color code definition. Which can be defined using rgb255 = {value,value,value}.

pgfplotsset{colormap={CM}{rgb=(0,0,1) color=(red) rgb=(0,0,1)}}

begin{document}

begin{tikzpicture}

begin{axis}[point meta = y, colormap name={CM}]

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}



end{tikzpicture}

end{document}

which will give you:

Update Credits goes to @marmot.

You can an inline function in point meta definition to customise your colormap implicitly using an explicit function (see @marmot's comments).

documentclass[tikz]{standalone}

usepackage{pgfplots}



begin{document}

    begin{tikzpicture}

    begin{axis}

    [ colormap/hot] addplot [point meta = x*x*x,mesh, samples=100,domain=-10:10] {sin(deg(x))+0.6*x};

    end{axis}

    end{tikzpicture}

end{document}

Here, I used cubic function for manipulating the color map. This will give

share|improve this answer

edited 45 mins ago

answered 4 hours ago

RaajaRaaja

4,28121138

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Thanks, but I think this misses the bit that the color gradient should depict this a function, (in my question i used the example of x^2)
  
  – sheß
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @sheß Nice that it is close, but could you please explain me the last part? I will try to help you with that :) may be you can draw a small rough sketch on what you would like to get out of it?
  
  – Raaja
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  clear thanks I will try to cook up something
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @sheß OOps, in that case, I will wait for some our in house TikZperts to answer your question ;)
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Done adding, lately, falcons are going well together with @marmot.
  
  – Raaja
  44 mins ago
  

  
  
  
  

 | 
show 6 more comments

4

Something like this may be:

documentclass[tikz]{standalone}

usepackage{pgfplots}

begin{document}

begin{tikzpicture}

begin{axis}

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}

end{tikzpicture}

end{document}

I just changed the draw environment with addplot within an axis environment. This will give you:

Update Fix with colormaps. By utilising the colormaps tikz library you can set the desired color map and obtain what you desire. As in:

documentclass[tikz]{standalone}

usepackage{pgfplots}

 usepgfplotslibrary{colormaps}

% Note that this is the colormap definition. You can play with this however you want. Fun fact: this color map also includes 8bit color code definition. Which can be defined using rgb255 = {value,value,value}.

pgfplotsset{colormap={CM}{rgb=(0,0,1) color=(red) rgb=(0,0,1)}}

begin{document}

begin{tikzpicture}

begin{axis}[point meta = y, colormap name={CM}]

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}



end{tikzpicture}

end{document}

which will give you:

Update Credits goes to @marmot.

You can an inline function in point meta definition to customise your colormap implicitly using an explicit function (see @marmot's comments).

documentclass[tikz]{standalone}

usepackage{pgfplots}



begin{document}

    begin{tikzpicture}

    begin{axis}

    [ colormap/hot] addplot [point meta = x*x*x,mesh, samples=100,domain=-10:10] {sin(deg(x))+0.6*x};

    end{axis}

    end{tikzpicture}

end{document}

Here, I used cubic function for manipulating the color map. This will give

share|improve this answer

edited 45 mins ago

answered 4 hours ago

RaajaRaaja

4,28121138

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Thanks, but I think this misses the bit that the color gradient should depict this a function, (in my question i used the example of x^2)
  
  – sheß
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @sheß Nice that it is close, but could you please explain me the last part? I will try to help you with that :) may be you can draw a small rough sketch on what you would like to get out of it?
  
  – Raaja
  3 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  clear thanks I will try to cook up something
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @sheß OOps, in that case, I will wait for some our in house TikZperts to answer your question ;)
  
  – Raaja
  3 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Done adding, lately, falcons are going well together with @marmot.
  
  – Raaja
  44 mins ago
  

  
  
  
  

 | 
show 6 more comments

Something like this may be:

documentclass[tikz]{standalone}

usepackage{pgfplots}

begin{document}

begin{tikzpicture}

begin{axis}

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}

end{tikzpicture}

end{document}

I just changed the draw environment with addplot within an axis environment. This will give you:

Update Fix with colormaps. By utilising the colormaps tikz library you can set the desired color map and obtain what you desire. As in:

documentclass[tikz]{standalone}

usepackage{pgfplots}

 usepgfplotslibrary{colormaps}

% Note that this is the colormap definition. You can play with this however you want. Fun fact: this color map also includes 8bit color code definition. Which can be defined using rgb255 = {value,value,value}.

pgfplotsset{colormap={CM}{rgb=(0,0,1) color=(red) rgb=(0,0,1)}}

begin{document}

begin{tikzpicture}

begin{axis}[point meta = y, colormap name={CM}]

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}



end{tikzpicture}

end{document}

which will give you:

Update Credits goes to @marmot.

You can an inline function in point meta definition to customise your colormap implicitly using an explicit function (see @marmot's comments).

documentclass[tikz]{standalone}

usepackage{pgfplots}



begin{document}

    begin{tikzpicture}

    begin{axis}

    [ colormap/hot] addplot [point meta = x*x*x,mesh, samples=100,domain=-10:10] {sin(deg(x))+0.6*x};

    end{axis}

    end{tikzpicture}

end{document}

Here, I used cubic function for manipulating the color map. This will give

share|improve this answer

edited 45 mins ago

answered 4 hours ago

RaajaRaaja

4,28121138

documentclass[tikz]{standalone}

usepackage{pgfplots}

begin{document}

begin{tikzpicture}

begin{axis}

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}

end{tikzpicture}

end{document}

documentclass[tikz]{standalone}

usepackage{pgfplots}

 usepgfplotslibrary{colormaps}

% Note that this is the colormap definition. You can play with this however you want. Fun fact: this color map also includes 8bit color code definition. Which can be defined using rgb255 = {value,value,value}.

pgfplotsset{colormap={CM}{rgb=(0,0,1) color=(red) rgb=(0,0,1)}}

begin{document}

begin{tikzpicture}

begin{axis}[point meta = y, colormap name={CM}]

addplot [mesh, variable=x, samples=100,domain=-10:10] ({x},{sin(deg(x))+0.6*x});

end{axis}



end{tikzpicture}

end{document}

documentclass[tikz]{standalone}

usepackage{pgfplots}



begin{document}

    begin{tikzpicture}

    begin{axis}

    [ colormap/hot] addplot [point meta = x*x*x,mesh, samples=100,domain=-10:10] {sin(deg(x))+0.6*x};

    end{axis}

    end{tikzpicture}

end{document}

share|improve this answer

edited 45 mins ago

answered 4 hours ago

RaajaRaaja

4,28121138

answered 4 hours ago

RaajaRaaja

4,28121138

answered 4 hours ago

RaajaRaaja

4,28121138