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Marking a point on parabola (like ellipse)

How to draw a point at a particular location along the curve in TikZRotate a node but not its content: the case of the ellipse decorationMarking a specific point on an arcIntersection of paths with constructed namesHow to define the default vertical distance between nodes?TikZ scaling graphic and adjust node position and keep font sizeTikZ/ERD: node (=Entity) label on the insideTikZ: Drawing an arc from an intersection to an intersectionprint double sided playing cardsDrawing rectilinear curves in Tikz, aka an Etch-a-Sketch drawingLine up nested tikz enviroments or how to get rid of them

3

2

We can mark a point on ellipse using

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at
(-120:2cm and 1cm) {};

Is there any way to define a point on parabola?

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}



color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-120:2cm and 1cm) {};



draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

tikz-pgf

share|improve this question

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Isn't this a duplicate of your own question?
  
  – Thruston
  Nov 22 '18 at 10:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Thruston Using "decoration", i can not define different points on the curve. Here in ellipse, i can define point "X" based on the angle.
  
  – sandu
  Nov 22 '18 at 10:18
  
  
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Why can't you just load decorations.markings and do draw[red,postaction={decorate,decoration={markings, mark=at position 0.2 with {% node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);? Here the position plays the same role as the angle, it parametrizes the position of the location.
  
  – marmot
  Nov 22 '18 at 12:45
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JouleV Yes....
  
  – sandu
  15 hours ago
  

  
  
  
  

add a comment | 

3

2

We can mark a point on ellipse using

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at
(-120:2cm and 1cm) {};

Is there any way to define a point on parabola?

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}



color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-120:2cm and 1cm) {};



draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

tikz-pgf

share|improve this question

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Isn't this a duplicate of your own question?
  
  – Thruston
  Nov 22 '18 at 10:13
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @Thruston Using "decoration", i can not define different points on the curve. Here in ellipse, i can define point "X" based on the angle.
  
  – sandu
  Nov 22 '18 at 10:18
  
  
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Why can't you just load decorations.markings and do draw[red,postaction={decorate,decoration={markings, mark=at position 0.2 with {% node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);? Here the position plays the same role as the angle, it parametrizes the position of the location.
  
  – marmot
  Nov 22 '18 at 12:45
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JouleV Yes....
  
  – sandu
  15 hours ago
  

  
  
  
  

add a comment | 

We can mark a point on ellipse using

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at
(-120:2cm and 1cm) {};

Is there any way to define a point on parabola?

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}



color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-120:2cm and 1cm) {};



draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

tikz-pgf

share|improve this question

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}



color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-120:2cm and 1cm) {};



draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this question

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

share|improve this question

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

asked Nov 22 '18 at 8:41

sandusandu

3,50842855

1 Answer
1

active

oldest

votes

2

Based on marmot comment...

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}

usetikzlibrary{decorations.markings}

color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-150:2cm and 1cm) {};



%draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

draw[red,postaction={decorate,decoration={markings, mark=at position 0.5 with { node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this answer

answered 15 hours ago

sandusandu

3,50842855

add a comment | 

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2

Based on marmot comment...

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}

usetikzlibrary{decorations.markings}

color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-150:2cm and 1cm) {};



%draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

draw[red,postaction={decorate,decoration={markings, mark=at position 0.5 with { node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this answer

answered 15 hours ago

sandusandu

3,50842855

add a comment | 

2

Based on marmot comment...

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}

usetikzlibrary{decorations.markings}

color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-150:2cm and 1cm) {};



%draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

draw[red,postaction={decorate,decoration={markings, mark=at position 0.5 with { node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this answer

answered 15 hours ago

sandusandu

3,50842855

add a comment | 

Based on marmot comment...

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}

usetikzlibrary{decorations.markings}

color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-150:2cm and 1cm) {};



%draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

draw[red,postaction={decorate,decoration={markings, mark=at position 0.5 with { node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this answer

answered 15 hours ago

sandusandu

3,50842855

documentclass[border=2pt]{standalone}

usepackage[usenames,dvipsnames,svgnames]{xcolor}

usepackage{tikz}

usetikzlibrary{decorations.markings}

color{Maroon} 



begin{document}

begin{tikzpicture}

draw[thin,gray!50](-3,-2) grid (3,2);

draw[Maroon,thick] (0,0) ellipse (2cm and 1cm);

node[Maroon,draw,fill,circle,inner sep=1pt,label={-90:$X$}] (X) at (-150:2cm and 1cm) {};



%draw[red] (-1,0) parabola[parabola height=1.5cm] (2,0);

draw[red,postaction={decorate,decoration={markings, mark=at position 0.5 with { node[red,draw,fill,circle,inner sep=1pt,label={-90:$Y$}](Y){};}}}] (-1,0) parabola[parabola height=1.5cm] (2,0);

end{tikzpicture}



end{document}

share|improve this answer

answered 15 hours ago

sandusandu

3,50842855

answered 15 hours ago

sandusandu

3,50842855

answered 15 hours ago

sandusandu

3,50842855