在所附代码中，我想手动添加xticks，但似乎所有小于的y=0都被忽略且不可见。此外，当我像定位 z 标签时z legend style={at={(0,-0.1,2)},，它会消失。
我无法获得x tick0（参见下面的代码）并且当然，\Sigma标签也被强制在 y>0 侧 / 并且我希望将它放在 x 标签“之下”。
我遗漏了什么？如何“扩大”可见区域？
\documentclass[border=1cm]{standalone}
\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{calc}
\pgfplotsset{compat=newest}% <- set a compat!!
%%%%%%%
\pgfkeys{/pgf/declare function={argsinh(\x) = ln(\x + sqrt(\x^2+1));}}
\pgfkeys{/pgf/declare function={argcosh(\x) = ln(\x + sqrt(-1 + \x)*sqrt(1 + \x));}}
%%4th order normed low pass, Chebyshev
\pgfkeys{/pgf/declare function={H(\x,\y) = .125297/(sqrt((\x^4-6*\x^2*\y^2+\y^4+.581580*\x^3-1.744740*\x*\y^2+1.169118*\x^2-1.169118*\y^2+.404768*\x+.176987)^2+(4*\x^3*\y-4*\x*\y^3+1.744740*\x^2*\y-.581580*\y^3+2.338236*\x*\y+.404768*\y)^2));}}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
axis lines=middle, axis on top,
axis equal image,
width=40cm, %%ridi velikost grafu!
view={60}{45},
xmin=-0.5,
xmax=0.5,
ymin=-0.1,
ymax=2,
zmin=-0.1,
zmax=2,
miter limit=1,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
xlabel=$\Sigma$,
ylabel=$j\Omega$,
zlabel=$\mathopen| H(j\Omega)\mathclose|$,
xtick = {0},
xticklabels = {$0$},
ytick = {.392046688799926,.946484433184241},
yticklabels = {$\Im(s_4)$,$\Im(s_3)$},
ztick = {},
zticklabels = {},
]
%%pole position as projection
\addplot3[dotted,black] coordinates {
(0,.946484433184241,0)
(-.851703985681571e-1,.946484433184241,0)
(-.851703985681571e-1,0,0)
};
%%standard circle symbol for pole
\draw[black, thin] (-.851703985681571e-1,.946484433184241,0) circle [radius=0.03];
%%pole position as projection
\addplot3[dotted,black] coordinates {
(0,.392046688799926,0)
(-.205619531335967,.392046688799926,0)
(-.205619531335967,0,0)
};
%%standard circle symbol for pole
\draw[black, thin] (-.205619531335967,.392046688799926,0) circle [radius=0.03];
%%pole position as projection / vertical lines
\addplot3[dotted,black] coordinates {
(-.205619531335967,.392046688799926,0)
(-.205619531335967,.392046688799926,1.5)
};
\addplot3[
smooth,
surf,
faceted color=black,
line width=0.01pt,
fill=white,
domain=-0.75:0,
y domain = 0:1.5,
samples = 40,
samples y = 50,
restrict z to domain*=0:1.5]
{H(\x,\y)};
\addplot3[
smooth,
surf,
faceted color=black,
line width=0.01pt,
fill=white,
domain=-0.4:0,
y domain = 0:1.2,
samples = 40,
samples y = 60,
restrict z to domain*=0:1.5]
{H(\x,\y)};
%%pole position as projection / vertical lines
\addplot3[dotted,black] coordinates {
(-.851703985681571e-1,.946484433184241,0)
(-.851703985681571e-1,.946484433184241,0.85)
};
%%red characteristics
\addplot3[domain=0:1.5,samples=70, samples y = 0, red, thick] ({0},{x},{H(0,x)});
%%ellipse for poles: order 4, eps=1 (3dB]
\pgfmathsetmacro{\elipseA}{sinh((1/4)*argsinh(1/1))}
\pgfmathsetmacro{\elipseB}{cosh((1/4)*argsinh(1/1))}
\draw[thin,dashed,blue] (0,\elipseB,0) arc (90:270:{\elipseA} and {\elipseB});
\end{axis}
\end{tikzpicture}
\end{document}
答案1
添加
hide obscured x ticks=false
不隐藏0x 轴的坐标。
要更改轴标签的位置，您可以使用例如。
xlabel style={anchor=east,xshift=-5pt,at={(xticklabel* cs:.95)}}
和
zlabel style={anchor=north east}
代码：
\documentclass[border=1cm]{standalone}
\usepackage{pgfplots}% loads also tikz
\usetikzlibrary{calc}
\pgfplotsset{compat=newest}% <- set a compat!!
%%%%%%%
\pgfkeys{/pgf/declare function={argsinh(\x) = ln(\x + sqrt(\x^2+1));}}
\pgfkeys{/pgf/declare function={argcosh(\x) = ln(\x + sqrt(-1 + \x)*sqrt(1 + \x));}}
%%4th order normed low pass, Chebyshev
\pgfkeys{/pgf/declare function={H(\x,\y) = .125297/(sqrt((\x^4-6*\x^2*\y^2+\y^4+.581580*\x^3-1.744740*\x*\y^2+1.169118*\x^2-1.169118*\y^2+.404768*\x+.176987)^2+(4*\x^3*\y-4*\x*\y^3+1.744740*\x^2*\y-.581580*\y^3+2.338236*\x*\y+.404768*\y)^2));}}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
axis lines=middle, axis on top,
axis equal image,
width=40cm, %%ridi velikost grafu!
view={60}{45},
xmin=-0.5,
xmax=0.5,
ymin=-0.1,
ymax=2,
zmin=-0.1,
zmax=2,
miter limit=1,
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
xlabel=$\Sigma$,
xlabel style={anchor=east,xshift=-5pt,at={(xticklabel* cs:.95)}},% <- position the x label
ylabel=$j\Omega$,
zlabel=$\mathopen| H(j\Omega)\mathclose|$,
zlabel style={anchor=north east},% <- position the z label
xtick = {0},
hide obscured x ticks=false,% <- added
ytick = {.392046688799926,.946484433184241},
yticklabels = {$\Im(s_4)$,$\Im(s_3)$},
ztick = \empty
]
%%pole position as projection
\addplot3[dotted,black] coordinates {
(0,.946484433184241,0)
(-.851703985681571e-1,.946484433184241,0)
(-.851703985681571e-1,0,0)
};
%%standard circle symbol for pole
\draw[black, thin] (-.851703985681571e-1,.946484433184241,0) circle [radius=0.03];
%%pole position as projection
\addplot3[dotted,black] coordinates {
(0,.392046688799926,0)
(-.205619531335967,.392046688799926,0)
(-.205619531335967,0,0)
};
%%standard circle symbol for pole
\draw[black, thin] (-.205619531335967,.392046688799926,0) circle [radius=0.03];
%%pole position as projection / vertical lines
\addplot3[dotted,black] coordinates {
(-.205619531335967,.392046688799926,0)
(-.205619531335967,.392046688799926,1.5)
};
\addplot3[
smooth,
surf,
faceted color=black,
line width=0.01pt,
fill=white,
domain=-0.75:0,
y domain = 0:1.5,
samples = 40,
samples y = 50,
restrict z to domain*=0:1.5]
{H(\x,\y)};
\addplot3[
smooth,
surf,
faceted color=black,
line width=0.01pt,
fill=white,
domain=-0.4:0,
y domain = 0:1.2,
samples = 40,
samples y = 60,
restrict z to domain*=0:1.5]
{H(\x,\y)};
%%pole position as projection / vertical lines
\addplot3[dotted,black] coordinates {
(-.851703985681571e-1,.946484433184241,0)
(-.851703985681571e-1,.946484433184241,0.85)
};
%%red characteristics
\addplot3[domain=0:1.5,samples=70, samples y = 0, red, thick] ({0},{x},{H(0,x)});
%%ellipse for poles: order 4, eps=1 (3dB]
\pgfmathsetmacro{\elipseA}{sinh((1/4)*argsinh(1/1))}
\pgfmathsetmacro{\elipseB}{cosh((1/4)*argsinh(1/1))}
\draw[thin,dashed,blue] (0,\elipseB,0) arc (90:270:{\elipseA} and {\elipseB});
\end{axis}
\end{tikzpicture}
\end{document}