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TikZ: How to reverse arrow direction without switching start/end point?

2

Assumed we have this MWE from user Caramdir:

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows,calc,decorations.markings,decorations.pathmorphing,arrows.meta}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -Latex]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

---

---

I want to reverse the arrow head position, so that the arrow tip is located at the inner end of the spiral and directs to the center.

How to do so?

tikz-pgf arrows tikz-arrows tikz-node

share|improve this question

edited 4 hours ago

Dave

asked 4 hours ago

DaveDave

964619

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  instead -Latex use Latex-? however, the result be ugly ....
  
  – Zarko
  4 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You just place the arrow in the other end in the options: Latex- -and then you will need to have a look at: tex.stackexchange.com/questions/176779/…
  
  – hpekristiansen
  4 hours ago
  

  
  
  
  

add a comment | 

2

Assumed we have this MWE from user Caramdir:

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows,calc,decorations.markings,decorations.pathmorphing,arrows.meta}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -Latex]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

---

---

I want to reverse the arrow head position, so that the arrow tip is located at the inner end of the spiral and directs to the center.

How to do so?

tikz-pgf arrows tikz-arrows tikz-node

share|improve this question

edited 4 hours ago

Dave

asked 4 hours ago

DaveDave

964619

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  instead -Latex use Latex-? however, the result be ugly ....
  
  – Zarko
  4 hours ago
  
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  You just place the arrow in the other end in the options: Latex- -and then you will need to have a look at: tex.stackexchange.com/questions/176779/…
  
  – hpekristiansen
  4 hours ago
  

  
  
  
  

add a comment | 

Assumed we have this MWE from user Caramdir:

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows,calc,decorations.markings,decorations.pathmorphing,arrows.meta}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -Latex]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

---

---

I want to reverse the arrow head position, so that the arrow tip is located at the inner end of the spiral and directs to the center.

How to do so?

tikz-pgf arrows tikz-arrows tikz-node

share|improve this question

edited 4 hours ago

Dave

asked 4 hours ago

DaveDave

964619

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows,calc,decorations.markings,decorations.pathmorphing,arrows.meta}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -Latex]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this question

edited 4 hours ago

Dave

asked 4 hours ago

DaveDave

964619

share|improve this question

edited 4 hours ago

Dave

asked 4 hours ago

DaveDave

964619

asked 4 hours ago

DaveDave

964619

asked 4 hours ago

DaveDave

964619

2 Answers
2

active

oldest

votes

2

To have arrow's head on opposition side of the spiral curve, you only need to change -Latex to Latex-. However result is quite unexpected (read unusable) ...

It might be more acceptable solution to move the arrow head close to the end of the spiral. For this you can exploit the package decorations.markings:

documentclass[tikz, margin=3mm]{standalone}

usetikzlibrary{arrows.meta, bending, decorations.markings}



begin{document}

    begin{tikzpicture}[

decoration = {markings,mark=at position .84 with

             {arrowreversed[black]{Latex[length=1.5mm]}}}

                        ]

draw[postaction={decorate}]

    plot[domain=0:25,variable=t,smooth,samples=101,

           {Latex[length=1mm]}-]

        ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 3 hours ago

ZarkoZarko

128k868168

add a comment | 

0

First of all, I would like to argue that bent arrows look better, also in the original plot. But since the curve becomes singular at 0, this does not immediately work because of dimension too large errors. However, it does once we approximate the inner-most stretch by an arc.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}[scale=2]

    pgfmathsetmacro{myt}{pi}   

    draw[{Latex[bend,length=2pt]}-] 

    (0: {0.002*myt*myt})

    arc({0}:{180}:{0.002*myt*myt});

    draw  plot[domain=pi:25.1327,variable=t,samples=75,smooth]

         ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

And here is the original pic with a bent arrow.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -{Latex[bend]}]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

Note that one should always load bending when one attaches arrows to curved paths, regardless of whether or not one bends the arrows, since otherwise the paths get distorted. Bending cures the distortion even when not explicitly used.

share|improve this answer

answered 1 hour ago

marmotmarmot

113k5145274

add a comment | 

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2

To have arrow's head on opposition side of the spiral curve, you only need to change -Latex to Latex-. However result is quite unexpected (read unusable) ...

It might be more acceptable solution to move the arrow head close to the end of the spiral. For this you can exploit the package decorations.markings:

documentclass[tikz, margin=3mm]{standalone}

usetikzlibrary{arrows.meta, bending, decorations.markings}



begin{document}

    begin{tikzpicture}[

decoration = {markings,mark=at position .84 with

             {arrowreversed[black]{Latex[length=1.5mm]}}}

                        ]

draw[postaction={decorate}]

    plot[domain=0:25,variable=t,smooth,samples=101,

           {Latex[length=1mm]}-]

        ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 3 hours ago

ZarkoZarko

128k868168

add a comment | 

2

To have arrow's head on opposition side of the spiral curve, you only need to change -Latex to Latex-. However result is quite unexpected (read unusable) ...

It might be more acceptable solution to move the arrow head close to the end of the spiral. For this you can exploit the package decorations.markings:

documentclass[tikz, margin=3mm]{standalone}

usetikzlibrary{arrows.meta, bending, decorations.markings}



begin{document}

    begin{tikzpicture}[

decoration = {markings,mark=at position .84 with

             {arrowreversed[black]{Latex[length=1.5mm]}}}

                        ]

draw[postaction={decorate}]

    plot[domain=0:25,variable=t,smooth,samples=101,

           {Latex[length=1mm]}-]

        ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 3 hours ago

ZarkoZarko

128k868168

add a comment | 

To have arrow's head on opposition side of the spiral curve, you only need to change -Latex to Latex-. However result is quite unexpected (read unusable) ...

It might be more acceptable solution to move the arrow head close to the end of the spiral. For this you can exploit the package decorations.markings:

documentclass[tikz, margin=3mm]{standalone}

usetikzlibrary{arrows.meta, bending, decorations.markings}



begin{document}

    begin{tikzpicture}[

decoration = {markings,mark=at position .84 with

             {arrowreversed[black]{Latex[length=1.5mm]}}}

                        ]

draw[postaction={decorate}]

    plot[domain=0:25,variable=t,smooth,samples=101,

           {Latex[length=1mm]}-]

        ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 3 hours ago

ZarkoZarko

128k868168

documentclass[tikz, margin=3mm]{standalone}

usetikzlibrary{arrows.meta, bending, decorations.markings}



begin{document}

    begin{tikzpicture}[

decoration = {markings,mark=at position .84 with

             {arrowreversed[black]{Latex[length=1.5mm]}}}

                        ]

draw[postaction={decorate}]

    plot[domain=0:25,variable=t,smooth,samples=101,

           {Latex[length=1mm]}-]

        ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 3 hours ago

ZarkoZarko

128k868168

answered 3 hours ago

ZarkoZarko

128k868168

answered 3 hours ago

ZarkoZarko

128k868168

0

First of all, I would like to argue that bent arrows look better, also in the original plot. But since the curve becomes singular at 0, this does not immediately work because of dimension too large errors. However, it does once we approximate the inner-most stretch by an arc.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}[scale=2]

    pgfmathsetmacro{myt}{pi}   

    draw[{Latex[bend,length=2pt]}-] 

    (0: {0.002*myt*myt})

    arc({0}:{180}:{0.002*myt*myt});

    draw  plot[domain=pi:25.1327,variable=t,samples=75,smooth]

         ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

And here is the original pic with a bent arrow.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -{Latex[bend]}]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

Note that one should always load bending when one attaches arrows to curved paths, regardless of whether or not one bends the arrows, since otherwise the paths get distorted. Bending cures the distortion even when not explicitly used.

share|improve this answer

answered 1 hour ago

marmotmarmot

113k5145274

add a comment | 

0

First of all, I would like to argue that bent arrows look better, also in the original plot. But since the curve becomes singular at 0, this does not immediately work because of dimension too large errors. However, it does once we approximate the inner-most stretch by an arc.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}[scale=2]

    pgfmathsetmacro{myt}{pi}   

    draw[{Latex[bend,length=2pt]}-] 

    (0: {0.002*myt*myt})

    arc({0}:{180}:{0.002*myt*myt});

    draw  plot[domain=pi:25.1327,variable=t,samples=75,smooth]

         ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

And here is the original pic with a bent arrow.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -{Latex[bend]}]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

Note that one should always load bending when one attaches arrows to curved paths, regardless of whether or not one bends the arrows, since otherwise the paths get distorted. Bending cures the distortion even when not explicitly used.

share|improve this answer

answered 1 hour ago

marmotmarmot

113k5145274

add a comment | 

First of all, I would like to argue that bent arrows look better, also in the original plot. But since the curve becomes singular at 0, this does not immediately work because of dimension too large errors. However, it does once we approximate the inner-most stretch by an arc.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}[scale=2]

    pgfmathsetmacro{myt}{pi}   

    draw[{Latex[bend,length=2pt]}-] 

    (0: {0.002*myt*myt})

    arc({0}:{180}:{0.002*myt*myt});

    draw  plot[domain=pi:25.1327,variable=t,samples=75,smooth]

         ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

And here is the original pic with a bent arrow.

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -{Latex[bend]}]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

Note that one should always load bending when one attaches arrows to curved paths, regardless of whether or not one bends the arrows, since otherwise the paths get distorted. Bending cures the distortion even when not explicitly used.

share|improve this answer

answered 1 hour ago

marmotmarmot

113k5145274

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}[scale=2]

    pgfmathsetmacro{myt}{pi}   

    draw[{Latex[bend,length=2pt]}-] 

    (0: {0.002*myt*myt})

    arc({0}:{180}:{0.002*myt*myt});

    draw  plot[domain=pi:25.1327,variable=t,samples=75,smooth]

         ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

documentclass{article}

usepackage{tikz}

usetikzlibrary{arrows.meta,bending}



begin{document}

begin{tikzpicture}

    draw [domain=0:25.1327,variable=t,smooth,samples=75, -{Latex[bend]}]

        plot ({t r}: {0.002*t*t});

end{tikzpicture}

end{document}

share|improve this answer

answered 1 hour ago

marmotmarmot

113k5145274

answered 1 hour ago

marmotmarmot

113k5145274

answered 1 hour ago

marmotmarmot

113k5145274