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Where are wrong in `xmin` and `xmax` of this code?



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)plotting two time series with boundsExternally set ymin, ymax, xmin and xmax with pgfplotsetHow do i get the x axis on top but keep a line on the bottomAutomatically get (ymin,ymax) and (xmin,xmax) in pgfplotsHow to prevent rounded and duplicated tick labels in pgfplots with fixed precision?pgfplots ignores xmin/xmax with 'axis equal' optionAppropriate values for `xmin`, `xmax`, `ymin`, `ymax`, or `unit vector ratio={a b}` to get asymptotepgfplots: percentage in matrix plotCenter the axes in the coordinate originDateplot doesn't work if xmin/xmax are specified












1















In following code, I used xmin=-2.5, xmax=4.2, but the output got incorrect result. How can I repair?



documentclass[tikz,12pt]{standalone}
usepackage{pgfplots}
pgfplotsset{compat=1.16}
usepackage{fouriernc}
begin{document}
begin{tikzpicture}[
declare function={
f(x)=(1/2)*x^3+3/2*(x^2)-4;
g(x)= -2*x^2+8*x-2;
}
]
begin{axis}[axis equal,
width=10cm,
grid=major,
axis x line=middle, axis y line=middle,
axis line style = very thick,
grid style={gray!30},
ymin=-5, ymax=7, yticklabels={}, ylabel=$y$,
xmin=-2.5, xmax=4.2, xticklabels={}, xlabel=$x$,
samples=500,
]
addplot[blue, very thick,domain=-3:2, smooth]{f(x)};
addplot[blue, very thick,domain=2:4, smooth]{g(x)};
% node[below left] at (-3, 0) {$-3$};
node[above] at (-2, 0) {$-2$};
%node[left,below] at (-1, 0) {$-1$};
node[below left] at ( 0,-4) {$-4$};
node[below left ] at ( 0,-2) {$-2$};
%node[above ] at (1,0) {$1$};
node[ left ] at (0,6) {$6$};
node[below right] at (0, 0) {$O$};
node[above] at (4, 0) {$4$};
node[below] at (2, 0) {$2$};
%node[left ] at (0, -2) {$-2$};
%addplot [mark=*,only marks,samples at={-1,1,0}] {f(x)};
;
draw[dashed, thick] (2,0) -- (2,6) -- (0,6)
(-2,0) -- (-2,-2) -- (4,-2) -- (4,0)
;
end{axis}
end{tikzpicture}
end{document}


enter image description here










share|improve this question



























    1















    In following code, I used xmin=-2.5, xmax=4.2, but the output got incorrect result. How can I repair?



    documentclass[tikz,12pt]{standalone}
    usepackage{pgfplots}
    pgfplotsset{compat=1.16}
    usepackage{fouriernc}
    begin{document}
    begin{tikzpicture}[
    declare function={
    f(x)=(1/2)*x^3+3/2*(x^2)-4;
    g(x)= -2*x^2+8*x-2;
    }
    ]
    begin{axis}[axis equal,
    width=10cm,
    grid=major,
    axis x line=middle, axis y line=middle,
    axis line style = very thick,
    grid style={gray!30},
    ymin=-5, ymax=7, yticklabels={}, ylabel=$y$,
    xmin=-2.5, xmax=4.2, xticklabels={}, xlabel=$x$,
    samples=500,
    ]
    addplot[blue, very thick,domain=-3:2, smooth]{f(x)};
    addplot[blue, very thick,domain=2:4, smooth]{g(x)};
    % node[below left] at (-3, 0) {$-3$};
    node[above] at (-2, 0) {$-2$};
    %node[left,below] at (-1, 0) {$-1$};
    node[below left] at ( 0,-4) {$-4$};
    node[below left ] at ( 0,-2) {$-2$};
    %node[above ] at (1,0) {$1$};
    node[ left ] at (0,6) {$6$};
    node[below right] at (0, 0) {$O$};
    node[above] at (4, 0) {$4$};
    node[below] at (2, 0) {$2$};
    %node[left ] at (0, -2) {$-2$};
    %addplot [mark=*,only marks,samples at={-1,1,0}] {f(x)};
    ;
    draw[dashed, thick] (2,0) -- (2,6) -- (0,6)
    (-2,0) -- (-2,-2) -- (4,-2) -- (4,0)
    ;
    end{axis}
    end{tikzpicture}
    end{document}


    enter image description here










    share|improve this question

























      1












      1








      1








      In following code, I used xmin=-2.5, xmax=4.2, but the output got incorrect result. How can I repair?



      documentclass[tikz,12pt]{standalone}
      usepackage{pgfplots}
      pgfplotsset{compat=1.16}
      usepackage{fouriernc}
      begin{document}
      begin{tikzpicture}[
      declare function={
      f(x)=(1/2)*x^3+3/2*(x^2)-4;
      g(x)= -2*x^2+8*x-2;
      }
      ]
      begin{axis}[axis equal,
      width=10cm,
      grid=major,
      axis x line=middle, axis y line=middle,
      axis line style = very thick,
      grid style={gray!30},
      ymin=-5, ymax=7, yticklabels={}, ylabel=$y$,
      xmin=-2.5, xmax=4.2, xticklabels={}, xlabel=$x$,
      samples=500,
      ]
      addplot[blue, very thick,domain=-3:2, smooth]{f(x)};
      addplot[blue, very thick,domain=2:4, smooth]{g(x)};
      % node[below left] at (-3, 0) {$-3$};
      node[above] at (-2, 0) {$-2$};
      %node[left,below] at (-1, 0) {$-1$};
      node[below left] at ( 0,-4) {$-4$};
      node[below left ] at ( 0,-2) {$-2$};
      %node[above ] at (1,0) {$1$};
      node[ left ] at (0,6) {$6$};
      node[below right] at (0, 0) {$O$};
      node[above] at (4, 0) {$4$};
      node[below] at (2, 0) {$2$};
      %node[left ] at (0, -2) {$-2$};
      %addplot [mark=*,only marks,samples at={-1,1,0}] {f(x)};
      ;
      draw[dashed, thick] (2,0) -- (2,6) -- (0,6)
      (-2,0) -- (-2,-2) -- (4,-2) -- (4,0)
      ;
      end{axis}
      end{tikzpicture}
      end{document}


      enter image description here










      share|improve this question














      In following code, I used xmin=-2.5, xmax=4.2, but the output got incorrect result. How can I repair?



      documentclass[tikz,12pt]{standalone}
      usepackage{pgfplots}
      pgfplotsset{compat=1.16}
      usepackage{fouriernc}
      begin{document}
      begin{tikzpicture}[
      declare function={
      f(x)=(1/2)*x^3+3/2*(x^2)-4;
      g(x)= -2*x^2+8*x-2;
      }
      ]
      begin{axis}[axis equal,
      width=10cm,
      grid=major,
      axis x line=middle, axis y line=middle,
      axis line style = very thick,
      grid style={gray!30},
      ymin=-5, ymax=7, yticklabels={}, ylabel=$y$,
      xmin=-2.5, xmax=4.2, xticklabels={}, xlabel=$x$,
      samples=500,
      ]
      addplot[blue, very thick,domain=-3:2, smooth]{f(x)};
      addplot[blue, very thick,domain=2:4, smooth]{g(x)};
      % node[below left] at (-3, 0) {$-3$};
      node[above] at (-2, 0) {$-2$};
      %node[left,below] at (-1, 0) {$-1$};
      node[below left] at ( 0,-4) {$-4$};
      node[below left ] at ( 0,-2) {$-2$};
      %node[above ] at (1,0) {$1$};
      node[ left ] at (0,6) {$6$};
      node[below right] at (0, 0) {$O$};
      node[above] at (4, 0) {$4$};
      node[below] at (2, 0) {$2$};
      %node[left ] at (0, -2) {$-2$};
      %addplot [mark=*,only marks,samples at={-1,1,0}] {f(x)};
      ;
      draw[dashed, thick] (2,0) -- (2,6) -- (0,6)
      (-2,0) -- (-2,-2) -- (4,-2) -- (4,0)
      ;
      end{axis}
      end{tikzpicture}
      end{document}


      enter image description here







      pgfplots






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 11 mins ago









      minhthien_2016minhthien_2016

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