问题：雷达图超出页面范围

Question

我认为您需要step为每个设置不同的\tkzKiviatDiagram值，该值决定了缩放比例。我选择的值是为了让绘图几乎到达边缘，您可能需要调整它。

tkz-kiviat我认为仅适用于正值，因此需要对进行一些修改才能获得负值的合理结果。虽然下面的代码似乎可以工作，但使用起来可能不太方便。我添加了一些注释来描述与包代码中\tkz@KiviatLine的定义相比发生了哪些变化。\tkz@KiviatLine

注意：我对的重新定义做了一些更改\tkz@KiviatGrad，以便更好地放置轴标签，并能够设置标签的精度。我还从0而不是开始循环1，这样您就可以获得中心点的标签。

为了让图表更整洁一些，我设置了lattice=5,gap=1。请注意lattice，gap和step都是相连的，因此当gap加倍（默认为0.5）时，step必须减半。

要为每个图表获取一个标题，您可以利用您已命名 es 的事实local bounding box，这样您就可以放置\node与它们相关的内容，如下面的代码所示。

我还展示了一种制作图例的方法。为了使这更容易，我为三个图定义了三种样式，这减少了代码重复，并使更改外观更加方便。

\documentclass[border=5mm]{standalone}
\usepackage{tkz-kiviat,pgfplots}
\makeatletter
\def\tkz@KiviatGrad[#1](#2){% 
\begingroup
\pgfkeys{/kiviatgrad/.cd,
graduation distance= 0 pt,
prefix ={},
suffix={},
unity=1,
% added the following four lines
label precision/.store in=\gradlabel@precision,
label precision=1,
zero point/.store in=\tkz@grad@zero,
zero point=0
}
\pgfqkeys{/kiviatgrad}{#1}% 
\let\tikz@label@distance@tmp\tikz@label@distance
\global\let\tikz@label@distance\tkz@kiv@grad
  % started loop at zero, to get label for center point
 \foreach \nv in {0,...,\tkz@kiv@lattice}{
 % skipped the \pgfmathparse, moved
 % \tkz@kiv@unity*\nv-\tkz@grad@zero
 % into \pgfmathsetmacro. The last term is added
 \pgfmathsetmacro{\result}{\tkz@kiv@unity*\nv-\tkz@grad@zero} % change from \pgfmathtruncatemacro
 % NOTE: use \gradlabel@precision for the precision
 \protected@edef\tkz@kiv@gd{%
    \tkz@kiv@prefix%
    \pgfmathprintnumber[precision=\gradlabel@precision,fixed]{\result}%% used \pgfmathprintnumber instead of "$\result$"
    \tkz@kiv@suffix} 
    \path[/kiviatgrad/.cd,#1] (0:0)--(360/\tkz@kiv@radial*#2:\nv*\tkz@kiv@gap)
       % NOTE: (360/\tkz@kiv@radial*#2)-90  -> (360/\tkz@kiv@radial*#2)
       % removed 90 because you rotate all the diagrams
       node[label=(360/\tkz@kiv@radial*#2):\tiny\tkz@kiv@gd] {}; % added \tiny
      }
 \let\tikz@label@distance\tikz@label@distance@tmp  
\endgroup
}%


\def\tkz@KiviatLine[#1](#2,#3){% 
\begingroup
\pgfkeys{/kiviatline/.cd,
fill= {},
opacity=.5,
% add these two lines, similar to for kiviatline
zero point/.store in=\tkz@line@zero,
zero point=0
}
%
% the code below has a lot of polar coordinates, of the form
%   (angle: <value> * <some factor>)
% all have been modified to get them on the form
%   (angle:{(<value>+\tkz@line@zero) * <some factor>})
% note extra braces, which are required when a component contains ()
% 
\pgfqkeys{/kiviatline}{#1}%   opacity ??????
\ifx\tkzutil@empty\tkz@kivl@fill \else 
\begin{scope}[on background layer]
 \path[fill=\tkz@kivl@fill,opacity=\tkz@kivl@opacity] (360/\tkz@kiv@radial*0:{(#2+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step})   
\foreach \v [count=\rang from 1] in {#3}{%  
 -- (360/\tkz@kiv@radial*\rang:{(\v+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step}) } -- (360/\tkz@kiv@radial*0:{(#2+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step}); 
 \end{scope}
 \fi       
% added overlay option because something weird happened with the bounding box
\draw[#1,opacity=1,overlay] (0:{(#2+\tkz@line@zero)*\tkz@kiv@gap}) plot coordinates {(360/\tkz@kiv@radial*0:{(#2+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step})}  
\foreach \v [count=\rang from 1] in {#3}{%  
 -- (360/\tkz@kiv@radial*\rang:{(\v+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step}) plot coordinates {(360/\tkz@kiv@radial*\rang:{(\v+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step})}} -- (360/\tkz@kiv@radial*0:{(#2+\tkz@line@zero)*\tkz@kiv@gap*\tkz@kiv@step});   
\endgroup
}%  

\makeatother
\begin{document}

\begin{tikzpicture}[
  label distance=.1cm,
  scale=0.37,
  plot1/.style={
    thick,
    draw=red!40,
    fill=red!20,
    mark=ball,
    mark options={
     ball color=red, % note ball color inside mark options
     mark size=4pt
    }
  },
  plot2/.style={
    thick,
    draw=blue!40,
    fill=blue!40,
    mark=ball,
    mark options={
      mark size=4pt,
      ball color=blue
    },
    opacity=.5
  },
  plot3/.style={
    thick,
    draw=blue!20,
    fill=yellow!20,
    mark=ball,
    mark options={
      mark size=4pt,
      ball color=yellow
    },
    opacity=.5
  }
]

% Correlation coefficient
\begin{scope}[local bounding box=a,shift={(0,0)}]

% define some macros for convenience
\newcommand\KivStep{4}
\pgfmathsetmacro\Unity{1/\KivStep}
\newcommand\zeroshift{0.2}

 \tkzKiviatDiagram[
   radial  style/.style ={-},
   rotate=90, 
   lattice style/.style ={black!30},
   step=\KivStep,
   gap=1,
   lattice=5
]% 
{A,B,C,D,E,F}

% I don't really know why /kiviatline/ is necessary here
% but it is, unfortunately
\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot1
](0.69967,0.518884,0.666573,0.641628,0.260964,-0.097147)
\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot2
](0.69967,0.51442,0.741518,0.683882,0.845317,0.268581)
\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot3
](0.69967,0.516279,0.716755,0.674239,0.84688,0.85819)

\tkzKiviatGrad[unity=\Unity, label precision=2, zero point=\zeroshift](0) % set unity as 0.1
\end{scope}
%PBIAS
\begin{scope}[local bounding box=b,shift={(-15,0)}]

\newcommand\KivStep{0.01}
\pgfmathsetmacro\Unity{1/\KivStep}
\newcommand\zeroshift{200}

 \tkzKiviatDiagram[
   radial  style/.style ={-},
   rotate=90,
   lattice style/.style ={black!30},
   step=\KivStep,
   gap=1,
   lattice=5
]% 
{A,B,C,D,E,F}


\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot1
](0.549194,31.436088,41.019637,48.748227,-34.859838,243.311831)
\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot2
](0.549194,31.947443,34.558203,40.005646,-157.190631,-70.267567)
\tkzKiviatLine[
  /kiviatline/zero point=\zeroshift,
  plot3
](0.549194,34.251384,36.154543,41.913,-139.627415,-20.655737)

\tkzKiviatGrad[unity=\Unity, zero point=\zeroshift](0) % set unity as 0.1
\end{scope}
% RMSE
\begin{scope}[local bounding box=c,shift={(15,0)}]
\newcommand\KivStep{75}
\pgfmathsetmacro\Unity{1/\KivStep}

\tkzKiviatDiagram[
  radial  style/.style ={-},
  rotate=90,
  lattice style/.style ={black!30},
  step=\KivStep,
  gap=1,
  lattice=5
]% 
{A,B,C,D,E,F}

\tkzKiviatLine[plot1](0.030665,0.0591,0.043113,0.058399,0.022864,0.031734)
\tkzKiviatLine[plot2](0.030665,0.059414,0.038696,0.053704,0.023005,0.011813)
\tkzKiviatLine[plot3](0.030665,0.060144,0.040277,0.055047,0.02086,0.002801)

% need more decimals for labels
\tkzKiviatGrad[unity=\Unity, label precision=3](0)
\end{scope}


\node [above] at (a.north) {Foo};
\node [above] at (b.north) {Bar};
\node [above] at (c.north) {Baz};

\matrix [above] at (current bounding box.north) {
  \filldraw [plot1,scale=0.5] plot coordinates {(0,0)(1,0)(1,0.5)(0,0.5)} -- cycle; & \node[anchor=base]{Lorem}; &
  \filldraw [plot2,scale=0.5] plot coordinates {(0,0)(1,0)(1,0.5)(0,0.5)} -- cycle; & \node[anchor=base]{ipsum}; &
  \filldraw [plot3,scale=0.5] plot coordinates {(0,0)(1,0)(1,0.5)(0,0.5)} -- cycle; & \node[anchor=base]{dolor}; \\
};


\end{tikzpicture}
\end{document}

Answer 1