使用 tikz 包生成的图片有问题。我想用正确的轴缩放比例表示 y 堆叠条形图。
当我将 y 轴的下限设为 -100 或更低时，图形看起来就像我想要的那样，部分原因是轴的负部分有太多空白空间。
但是，每当我将 yaxis（ymin=...）的限制更改为低于 100 的任何值时，我都会得到下图。
这是我用来生成可独立工作的图形的代码
\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\usepackage{tikz}
\usepgfplotslibrary{dateplot}
\pgfplotsset{ width=5cm,
compat=newest,
height=5cm}
\begin{document}%
\pgfplotstableread{
ShipSpeed EtaElGen PropPowerDemand etaMEspeed etaMEload
10 -2.797 27.8314 4.2509 0.2233
10.5 -2.8585 23.4095 3.1733 21.2364
11 -2.9671 15.7072 2.9115 18.1553
11.5 -3.1144 7.1415 1.7966 11.7155
12 -3.2880 36.1173 10.3741 -12.9793
12.5 -3.4724 21.6128 8.6830 -6.5325
13 -3.6481 10.5873 8.3315 -4.695
13.5 -3.7927 2.6080 8.7237 -3.2407
14 -3.8802 -2.0534 6.6109 0.6193
}\datatable
\begin{tikzpicture}[font=\tiny]
\begin{axis}[
x tick label style={/pgf/number format/1000 sep=},
ybar stacked,
bar width=1em,
ymin=-100,
ymax=50,
legend style={
at={(0.5,-0.1)},
anchor=north,
draw=none },
restrict y to domain*=:0, % negative values
y=1pt, % important workaround!
]
\addplot table [y index=1] {\datatable};
\addplot table [y index=2] {\datatable};
\addplot table [y index=3] {\datatable};
\addplot table [y index=4] {\datatable};
\legend{Factor1,Factor2,Factor3,Factor4}
\end{axis}
\begin{axis}[
x tick label style={/pgf/number format/1000 sep=},
ybar stacked,
bar width=1em,
ymin=-100,
ymax=50,
legend style={
at={(0.5,-0.1)},
anchor=north,
draw=none },
restrict y to domain*=0:, % positive values
y=1pt, % important workaround!
]
\addplot table [y index=1] {\datatable};
\addplot table [y index=2] {\datatable};
\addplot table [y index=3] {\datatable};
\addplot table [y index=4] {\datatable};
\legend{Factor1,Factor2,Factor3,Factor4}
\end{axis}
\end{tikzpicture}
\end{document}
答案1
更改第一组的上限，手动设置刻度，并且不要绘制两次图例：
\documentclass[border=5mm]{standalone}
\usepackage{pgfplots}
\usepackage{tikz}
\usepgfplotslibrary{dateplot}
\pgfplotsset{ width=5cm,
compat=newest,
height=5cm}
\begin{document}%
\pgfplotstableread{
ShipSpeed EtaElGen PropPowerDemand etaMEspeed etaMEload
10 -2.797 27.8314 4.2509 0.2233
10.5 -2.8585 23.4095 3.1733 21.2364
11 -2.9671 15.7072 2.9115 18.1553
11.5 -3.1144 7.1415 1.7966 11.7155
12 -3.2880 36.1173 10.3741 -12.9793
12.5 -3.4724 21.6128 8.6830 -6.5325
13 -3.6481 10.5873 8.3315 -4.695
13.5 -3.7927 2.6080 8.7237 -3.2407
14 -3.8802 -2.0534 6.6109 0.6193
}\datatable
\begin{tikzpicture}[font=\tiny]
\begin{axis}[
x tick label style={/pgf/number format/1000 sep=},
ybar stacked,
bar width=1em,
ymin=-20,
ymax=0,
ytick={-10,-20},
legend style={
at={(0.5,-0.1)},
anchor=north,
draw=none },
restrict y to domain*=:0, % negative values
y=1pt, % important workaround!
]
\addplot table [y index=1] {\datatable};
\addplot table [y index=2] {\datatable};
\addplot table [y index=3] {\datatable};
\addplot table [y index=4] {\datatable};
%\legend{Factor1,Factor2,Factor3,Factor4}
\end{axis}
\begin{axis}[
x tick label style={/pgf/number format/1000 sep=},
ybar stacked,
bar width=1em,
ymin=-20,
ymax=50,
ytick={0,10,20,30,40,50},
legend style={
at={(0.5,-0.1)},
anchor=north,
draw=none },
restrict y to domain*=0:, % positive values
y=1pt, % important workaround!
]
\addplot table [y index=1] {\datatable};
\addplot table [y index=2] {\datatable};
\addplot table [y index=3] {\datatable};
\addplot table [y index=4] {\datatable};
\legend{Factor1,Factor2,Factor3,Factor4}
\end{axis}
\end{tikzpicture}
\end{document}
