Adding Tips to Axis Lines

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I am trying to add arrows pointing on the axis lines for the following graph:



documentclassarticle
usepackagexcolor
usepackagepgfplots
usepackageamsmath

begindocument

beginfigure[ht]

centering

begintikzpicture[scale=1.75,line width=1pt]
beginaxis[
color= gray,
xmin=-4.9,
xmax=4.9,
ymin=-1.9,
ymax=2.9,
axis equal image,
axis lines=middle,
font=scriptsize,
xtick distance=1,
ytick distance=1,
xticklabels=,
yticklabels=,
legend pos=outer north east,
]

addplot[red, smooth, domain=-4.9:4.9] (8)/(4 + x^2);
addlegendentry$f(x)$

addplot[blue, smooth, domain=-4.9:4.9](-16*x)/((4+x^2)^2);
addlegendentry$f'(x)$

addplot[green, smooth, domain=-4.9:4.9]-(((16)*((4 + x^2)^2))-((4 + x^2)*
(64*(x^2))))/((4+x^2)^4);
addlegendentry$f''(x)$


endaxis
endtikzpicture

captionPlotting the curve when $r=1$.
labelfig:1

endfigure

enddocument


Here is the output of the code:



axis



See how only the top and the right end of the axis lines have arrow pointers, and the bottom and the left do not? Is there a way so I could get some on all four ends?



Thanks!










share|improve this question

























    up vote
    4
    down vote

    favorite












    I am trying to add arrows pointing on the axis lines for the following graph:



    documentclassarticle
    usepackagexcolor
    usepackagepgfplots
    usepackageamsmath

    begindocument

    beginfigure[ht]

    centering

    begintikzpicture[scale=1.75,line width=1pt]
    beginaxis[
    color= gray,
    xmin=-4.9,
    xmax=4.9,
    ymin=-1.9,
    ymax=2.9,
    axis equal image,
    axis lines=middle,
    font=scriptsize,
    xtick distance=1,
    ytick distance=1,
    xticklabels=,
    yticklabels=,
    legend pos=outer north east,
    ]

    addplot[red, smooth, domain=-4.9:4.9] (8)/(4 + x^2);
    addlegendentry$f(x)$

    addplot[blue, smooth, domain=-4.9:4.9](-16*x)/((4+x^2)^2);
    addlegendentry$f'(x)$

    addplot[green, smooth, domain=-4.9:4.9]-(((16)*((4 + x^2)^2))-((4 + x^2)*
    (64*(x^2))))/((4+x^2)^4);
    addlegendentry$f''(x)$


    endaxis
    endtikzpicture

    captionPlotting the curve when $r=1$.
    labelfig:1

    endfigure

    enddocument


    Here is the output of the code:



    axis



    See how only the top and the right end of the axis lines have arrow pointers, and the bottom and the left do not? Is there a way so I could get some on all four ends?



    Thanks!










    share|improve this question























      up vote
      4
      down vote

      favorite









      up vote
      4
      down vote

      favorite











      I am trying to add arrows pointing on the axis lines for the following graph:



      documentclassarticle
      usepackagexcolor
      usepackagepgfplots
      usepackageamsmath

      begindocument

      beginfigure[ht]

      centering

      begintikzpicture[scale=1.75,line width=1pt]
      beginaxis[
      color= gray,
      xmin=-4.9,
      xmax=4.9,
      ymin=-1.9,
      ymax=2.9,
      axis equal image,
      axis lines=middle,
      font=scriptsize,
      xtick distance=1,
      ytick distance=1,
      xticklabels=,
      yticklabels=,
      legend pos=outer north east,
      ]

      addplot[red, smooth, domain=-4.9:4.9] (8)/(4 + x^2);
      addlegendentry$f(x)$

      addplot[blue, smooth, domain=-4.9:4.9](-16*x)/((4+x^2)^2);
      addlegendentry$f'(x)$

      addplot[green, smooth, domain=-4.9:4.9]-(((16)*((4 + x^2)^2))-((4 + x^2)*
      (64*(x^2))))/((4+x^2)^4);
      addlegendentry$f''(x)$


      endaxis
      endtikzpicture

      captionPlotting the curve when $r=1$.
      labelfig:1

      endfigure

      enddocument


      Here is the output of the code:



      axis



      See how only the top and the right end of the axis lines have arrow pointers, and the bottom and the left do not? Is there a way so I could get some on all four ends?



      Thanks!










      share|improve this question













      I am trying to add arrows pointing on the axis lines for the following graph:



      documentclassarticle
      usepackagexcolor
      usepackagepgfplots
      usepackageamsmath

      begindocument

      beginfigure[ht]

      centering

      begintikzpicture[scale=1.75,line width=1pt]
      beginaxis[
      color= gray,
      xmin=-4.9,
      xmax=4.9,
      ymin=-1.9,
      ymax=2.9,
      axis equal image,
      axis lines=middle,
      font=scriptsize,
      xtick distance=1,
      ytick distance=1,
      xticklabels=,
      yticklabels=,
      legend pos=outer north east,
      ]

      addplot[red, smooth, domain=-4.9:4.9] (8)/(4 + x^2);
      addlegendentry$f(x)$

      addplot[blue, smooth, domain=-4.9:4.9](-16*x)/((4+x^2)^2);
      addlegendentry$f'(x)$

      addplot[green, smooth, domain=-4.9:4.9]-(((16)*((4 + x^2)^2))-((4 + x^2)*
      (64*(x^2))))/((4+x^2)^4);
      addlegendentry$f''(x)$


      endaxis
      endtikzpicture

      captionPlotting the curve when $r=1$.
      labelfig:1

      endfigure

      enddocument


      Here is the output of the code:



      axis



      See how only the top and the right end of the axis lines have arrow pointers, and the bottom and the left do not? Is there a way so I could get some on all four ends?



      Thanks!







      tikz-pgf pgfplots axis






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      asked 4 hours ago









      Aiden Kenny

      553




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          1 Answer
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          up vote
          4
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          Add



          every inner x axis line/.append style=stealth-stealth,
          every inner y axis line/.append style=stealth-stealth,


          at the end of your axis options, just after the legend pos=outer north east, and just before the ]



          See section 4.9.9 of the current reference manual.



          If you are happy with them both being the same, you could just set a single key (as pointed out in the comments):



          inner axis line style=stealth-stealth





          share|improve this answer


















          • 1




            Slightly shorter would be inner axis line style=stealth-stealth.
            – Torbjørn T.
            2 hours ago










          Your Answer







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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

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          active

          oldest

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          up vote
          4
          down vote













          Add



          every inner x axis line/.append style=stealth-stealth,
          every inner y axis line/.append style=stealth-stealth,


          at the end of your axis options, just after the legend pos=outer north east, and just before the ]



          See section 4.9.9 of the current reference manual.



          If you are happy with them both being the same, you could just set a single key (as pointed out in the comments):



          inner axis line style=stealth-stealth





          share|improve this answer


















          • 1




            Slightly shorter would be inner axis line style=stealth-stealth.
            – Torbjørn T.
            2 hours ago














          up vote
          4
          down vote













          Add



          every inner x axis line/.append style=stealth-stealth,
          every inner y axis line/.append style=stealth-stealth,


          at the end of your axis options, just after the legend pos=outer north east, and just before the ]



          See section 4.9.9 of the current reference manual.



          If you are happy with them both being the same, you could just set a single key (as pointed out in the comments):



          inner axis line style=stealth-stealth





          share|improve this answer


















          • 1




            Slightly shorter would be inner axis line style=stealth-stealth.
            – Torbjørn T.
            2 hours ago












          up vote
          4
          down vote










          up vote
          4
          down vote









          Add



          every inner x axis line/.append style=stealth-stealth,
          every inner y axis line/.append style=stealth-stealth,


          at the end of your axis options, just after the legend pos=outer north east, and just before the ]



          See section 4.9.9 of the current reference manual.



          If you are happy with them both being the same, you could just set a single key (as pointed out in the comments):



          inner axis line style=stealth-stealth





          share|improve this answer














          Add



          every inner x axis line/.append style=stealth-stealth,
          every inner y axis line/.append style=stealth-stealth,


          at the end of your axis options, just after the legend pos=outer north east, and just before the ]



          See section 4.9.9 of the current reference manual.



          If you are happy with them both being the same, you could just set a single key (as pointed out in the comments):



          inner axis line style=stealth-stealth






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 44 mins ago

























          answered 2 hours ago









          Thruston

          25.1k23988




          25.1k23988







          • 1




            Slightly shorter would be inner axis line style=stealth-stealth.
            – Torbjørn T.
            2 hours ago












          • 1




            Slightly shorter would be inner axis line style=stealth-stealth.
            – Torbjørn T.
            2 hours ago







          1




          1




          Slightly shorter would be inner axis line style=stealth-stealth.
          – Torbjørn T.
          2 hours ago




          Slightly shorter would be inner axis line style=stealth-stealth.
          – Torbjørn T.
          2 hours ago

















           

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