、およびD
で定義される物体を描きたいと思います。x^2+y^2<=9
z<=16-x^2-y^2
z>=0
x^2+y^2=9
、z=16-x^2-y^2
およびを不透明度を低くしてグラフ化し、交差点を塗りつぶす (またはパターンを使用する) ことで、前の式で定義したz=0
ボディを作成する必要があります。D
しかし、タスクを完了できません。これが MWE です:
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.25,.81)},anchor=north east},
legend cell align={left},
view={135}{25}
]
\addplot3[orange,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({r*cos(t)},{r*sin(t)},{16-r*r}); % z=16-x^2-y^2
\addlegendentry{\(16-x^2-y^2\)}
\addplot3[green,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({3*cos(t)},{3*sin(t)},{0}); % x^2+y^2=9
\addlegendentry{\(x^2+y^2=9\)}
\fill[cyan,opacity=.5] (3,3,0) -- (3,-3,0) -- (-3,-3,0)
-- (-3,3,0); % z=0
\addlegendentry{\(z=0\)} % This label is not showing because we used 'fill', not 'addplot3'
% Here should be the code of the intersection of the three surfaces...
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}
編集。感謝しますマーモット私が望んでいることを部分的に達成するのを手伝ってくれた人:
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.45,.85)},anchor=north east},
legend cell align={left},
view={135}{25}
]
\addplot3[opacity=.5,surf,shader=interp,colormap={orange}{color=(orange!50) color=(orange!50)},variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({r*cos(t)},{r*sin(t)},{16-r*r}); % z=16-x^2-y^2
\addlegendentry{\(z=16-x^2-y^2\)}
\addplot3[opacity=.5,surf,shader=interp,domain=0:360,domain y=0:16,colormap={green}{color=(green!50) color=(green!50)}] ({3*cos(x)},{3*sin(x)},{y}); % x^2+y^2=9
\addlegendentry{\(x^2+y^2=9\)}
%\fill[cyan,opacity=.5] (4,4,0) -- (4,-4,0) -- (-4,-4,0) -- (-4,4,0); % z=0
\addplot3[fill=cyan,opacity=.5,domain=-4:4, domain y=-4:4] (x,y,0);
\addlegendentry{\(z=0\)}
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}
ただし、次のことが必要です。
興味深いリンクをいくつか紹介します:
- tikzpicture 環境を使用して交差する葉の双曲面をグラフ化する方法
- 放物面をグラフ化すると、tikzpicture 環境を使用していくつかの不完全さが発生します。
- PGFPlots の切頂円筒
- tikzpicture 環境を使用して 2 つの放物線の間の領域を塗りつぶす
ありがとう!!
答え1
いかがでしょうか
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.45,.85)},anchor=north east},
legend cell align={left},
view={135}{25}
]
\addplot3[opacity=.5,surf,shader=interp,colormap={orange}{color=(orange!50) color=(orange!50)},variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({r*cos(t)},{r*sin(t)},{16-r*r}); % z=16-x^2-y^2
\addlegendentry{\(z=16-x^2-y^2\)}
\addplot3[opacity=.5,surf,shader=interp,domain=0:360,domain y=0:16,colormap={green}{color=(green!50) color=(green!50)}] ({3*cos(x)},{3*sin(x)},{y}); % x^2+y^2=9
\addlegendentry{\(x^2+y^2=9\)}
%\fill[cyan,opacity=.5] (4,4,0) -- (4,-4,0) -- (-4,-4,0) -- (-4,4,0); % z=0
\addplot3[surf,shader=interp,opacity=.5,domain=-4:4, domain y=-4:4,
colormap={dull}{color=(cyan) color=(cyan)},opacity=0.5] {0};
\addlegendentry{\(z=0\)}
\addplot3[mesh,color=gray,ultra thin,domain=0:360,domain y=0:4,z
buffer=sort,samples=31,samples y=41]
({min(y,3)*cos(x)},{min(y,3)*sin(x)},{16-y*y});
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}
? 意地悪なアヒルのための素敵なケージになるかもしれません。 ;-)
これは表面を示しています。元のプロットをどうしたいのかわかりません。
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.25,.81)},anchor=north east},
legend cell align={left},
view={135}{25}
]
% \addplot3[orange,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({r*cos(t)},{r*sin(t)},{16-r*r}); % z=16-x^2-y^2
% \addlegendentry{\(16-x^2-y^2\)}
% \addplot3[green,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({3*cos(t)},{3*sin(t)},{0}); % x^2+y^2=9
% \addlegendentry{\(x^2+y^2=9\)}
% \fill[cyan,opacity=.5] (3,3,0) -- (3,-3,0) -- (-3,-3,0)
% -- (-3,3,0); % z=0
% %\addlegendentry{\(z=0\)} % This label is not showing because we used 'fill', not 'addplot3'
% Here should be the code of the intersection of the three surfaces...
\addplot3[surf,shader=interp,domain=0:360,domain y=0:7,z buffer=sort]
({3*cos(x)},{3*sin(x)},{y});
\addplot3[data cs=polar,surf,shader=interp,domain=0:360,domain y=0:3] {16-y*y};
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}
これは私には毒キノコのように見えます:
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.25,.81)},anchor=north east},
legend cell align={left},
view={135}{25}
]
% \addplot3[orange,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({r*cos(t)},{r*sin(t)},{16-r*r}); % z=16-x^2-y^2
% \addlegendentry{\(16-x^2-y^2\)}
% \addplot3[green,opacity=.5,samples=51,samples y=21,variable=t,variable y=r,domain=0:360,domain y=0:2*pi,restrict z to domain=0:16] ({3*cos(t)},{3*sin(t)},{0}); % x^2+y^2=9
% \addlegendentry{\(x^2+y^2=9\)}
% \fill[cyan,opacity=.5] (3,3,0) -- (3,-3,0) -- (-3,-3,0)
% -- (-3,3,0); % z=0
% %\addlegendentry{\(z=0\)} % This label is not showing because we used 'fill', not 'addplot3'
% Here should be the code of the intersection of the three surfaces...
\addplot3[surf,shader=interp,domain=0:360,domain y=0:7,z
buffer=sort,colormap=
{greenblack}{color=(green!50!black) color=(green)}]
({3*cos(x)},{3*sin(x)},{y});
\addplot3[data cs=polar,surf,shader=interp,domain=0:360,domain y=0:3,color=orange] {16-y*y};
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}
一気に描くこともできます。
\documentclass{article}
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry}
\usepackage{pgfplots}
\pgfplotsset{compat=1.15}
\begin{document}
\begin{center}
\begin{tikzpicture}
\begin{axis} [
axis on top,
axis lines=center,
xlabel=$x$,
ylabel=$y$,
zlabel=$z$,
xmin=-5,
ymin=-5,
zmin=-1,
xmax=5,
ymax=5,
zmax=17,
xtick={-4,-3,0,3,4},
xticklabels={$-4$,$-3$,$0$,$3$,$4$},
ytick={-4,-3,0,3,4},
yticklabels={$-4$,$-3$,$0$,$3$,$4$},
ztick={0,16},
zticklabels={$0$,$16$},
ticklabel style={font=\tiny},
legend pos=outer north east,
legend style={at={(1.25,.81)},anchor=north east},
legend cell align={left},
view={135}{25}
]
% Here should be the code of the intersection of the three surfaces...
\addplot3[surf,shader=interp,domain=0:360,domain y=0:4,z
buffer=sort,colormap=
{greenorange}{color=(green!80!black) color=(orange)},samples=31,samples
y=41]
({min(y,3)*cos(x)},{min(y,3)*sin(x)},{16-y*y});
\end{axis}
\end{tikzpicture}
\end{center}
\end{document}