[Tex/LaTex] tkz-kiviat : increase label length and get the right legend

tikz-pgftkz-kiviat

I want to draw a spider/kiviat diagram. I am using the tkz-kiviat library but I have some problems. Here is my MWE

\documentclass[xcolor={dvipsnames}]{beamer}

\usetheme{Warsaw}

\usepackage[utf8]{inputenc}
\usepackage[frenchb]{babel}
\usepackage{eurosym}
\usepackage{amsmath,amssymb}
\usepackage{tikz}

\usepackage[upright]{fourier}
\usepackage{tkz-kiviat,numprint} 

\usetikzlibrary{decorations.pathreplacing, arrows, fit}
\usepackage{graphicx}
\usepackage{url}
\usepackage{booktabs}
\usepackage{textcomp}
\usepackage{epstopdf}
\usepackage{hhline}
\usepackage{xmpmulti}
\usepackage{siunitx}
\usepackage{adjustbox}

\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}


%\setbeamercolor{title}{fg=red!80!black}
%\setbeamertemplate{items}[circle]


\newcommand{\LegendBox}[3][]{%
\xdef\fitbox{}%
\coordinate[#1] (LegendBox_anchor) at (#2) ;
    \foreach \col/\item [count=\hi from 0] in {#3} {
       \node[color = \col,draw,
             fill  = \col!50,
             minimum width  = 4 ex,
             minimum height = 2 ex,
             label={[anchor = left,name=b\hi]right :\item}] at ([yshift=\hi*4 ex]LegendBox_anchor) {};
             \xdef\fitbox{\fitbox(b\hi)}
   }%
 \node [draw,fit=\fitbox(LegendBox_anchor)] {};
}

\title{MWE}
\date{\today}
\usepackage[T1]{fontenc}


\begin{document}

\begin{frame}

\begin{adjustbox}{max totalsize={.9\textwidth}{.8\textheight},center}
\begin{tikzpicture}[label distance=.15cm]
\begin{scope}
 \tkzKiviatDiagram[
        radial=5,
        radial  style/.style ={-},
        lattice style/.style ={blue!30}]
      {\LARGE Exhaustivité, \LARGE Descripteurs sociologiques, \LARGE Données conditions de vie, \LARGE Richesse des informations sur le revenu, \LARGE Coût}
 \tkzKiviatLine[thick,color=red,mark=ball,
                ball color=red,mark size=4pt,fill=red!20](5,9,6,8,4)
 \tkzKiviatLine[thick,color=blue,mark=ball,
                mark size=4pt,fill=blue!20,opacity=.5](9,6,8,4,5) 
 \tkzKiviatLine[thick,color=green,mark=ball, ball color=green,
                mark size=4pt,fill=green!20,opacity=.5](3,8,8,6,8)                 
                \end{scope}
\LegendBox[shift={(3cm,3.5cm)}]{current bounding box.south east}%
          {red/ ERFS,
           blue/ FiLoSoFi,
           green/ SRCV }                
\end{tikzpicture}
\end{adjustbox}
\end{frame}  
\end{document}

And what I get is

I have several things I would like to change :

My legend is obviously wrong, I think it is something in the label of the \LegendBox new command, but I have not found what.
I took the code from an answer to Spider Graph Legend and Caption.
I would like the labels of my axes to be larger, that is to have my text less cut
Last, I would like to have less lines on my diagram (each of the ten units is drawn, I would like only the even ones)

Thanks

Best Answer

Here are some modifications.

I redefined the \LegendBox command to produce a proper result.
You can use the style label style to specify a bigger text width for the labels.
This requires a redefinition of \tkz@KiviatDiagram so the loop drawing the lines has two as step instead of one. (You should consider asking the package creatot to add an option allowing to control the stepping for the lattice). I also did some other adjustments so the anchor for the nodes containing the labels can be changed.

The code:

\documentclass[xcolor={dvipsnames}]{beamer}

\usetheme{Warsaw}

\usepackage[utf8]{inputenc}
\usepackage[frenchb]{babel}
\usepackage{eurosym}
\usepackage{amsmath,amssymb}
\usepackage{tikz}
\usepackage[upright]{fourier}
\usepackage{tkz-kiviat,numprint} 

\usetikzlibrary{decorations.pathreplacing, arrows, fit}
\usepackage{graphicx}
\usepackage{url}
\usepackage{booktabs}
\usepackage{textcomp}
\usepackage{epstopdf}
\usepackage{hhline}
\usepackage{xmpmulti}
\usepackage{siunitx}
\usepackage{adjustbox}

\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}


%\setbeamercolor{title}{fg=red!80!black}
%\setbeamertemplate{items}[circle]


\newcommand{\LegendBox}[3][]{%
\xdef\fitbox{}%
\coordinate[#1] (LegendBox_anchor) at (#2) ;
    \foreach \col/\item [count=\hi from 0] in {#3} {
       \node[color = \col,draw,
             fill  = \col!10,
             minimum width  = 5 ex,
             minimum height = 2 ex,
             name=b\hi,
       ] at ([yshift=\hi*4 ex,xshift=3ex]LegendBox_anchor) {};
       \node[anchor=west,xshift=1ex] at (b\hi.east) (c\hi) {\item};
       \xdef\fitbox{\fitbox(c\hi)}
   }%
 \node [draw,fit=\fitbox(LegendBox_anchor)] {};
}

\makeatletter
\def\tkz@KiviatDiagram[#1]#2{% 

\pgfkeys{/kiviat/.cd,
gap          = .5,
lattice      = 10,
space        = .5,
step         = 1,
label space  = 1.5
}
\pgfqkeys{/kiviat}{#1}%
\begingroup
\foreach \x [count=\rang from 1] in {#2}{%
\global\let\tkz@kiv@radial\rang}% 
\foreach \x [count=\rang from 0] in {#2}{%
   \draw[/kiviat/radial style]
 (0,0)--(360/\tkz@kiv@radial*\rang:\tkz@kiv@lattice*\tkz@kiv@gap+\tkz@kiv@sp);
   \path
(0,0)--(360/\tkz@kiv@radial*\rang:\tkz@kiv@lattice*\tkz@kiv@gap+\tkz@kiv@space) node[anchor={180+360/\tkz@kiv@radial*\rang},/kiviat/label style] {\x}; 

\foreach \y in {0,2,...,\tkz@kiv@lattice}{
   \draw[/kiviat/lattice style]%
     (360/\tkz@kiv@radial*\rang:\y*\tkz@kiv@gap)--%
        (360/\tkz@kiv@radial*\rang+360/\tkz@kiv@radial:\y*\tkz@kiv@gap);
     }
}
\endgroup
}
\makeatother

\title{MWE}
\date{\today}
\usepackage[T1]{fontenc}

\begin{document}

\begin{frame}

\begin{adjustbox}{max totalsize={.9\textwidth}{.8\textheight},center}
\begin{tikzpicture}
\begin{scope}
 \tkzKiviatDiagram[
        radial=5,
        label style/.append style={font=\Huge,text width=6cm,align=left,shift={(-5pt,0pt)}},
        radial  style/.style ={-},
        lattice style/.style ={blue!30},
        ]
      {Exhaustivité, Descripteurs sociologiques, Données conditions de vie, Richesse des informations sur le revenu, {\hfill Coût\hfill\null}}
 \tkzKiviatLine[thick,color=red,mark=ball,
                ball color=red,mark size=4pt,fill=red!20](5,9,6,8,4)
 \tkzKiviatLine[thick,color=blue,mark=ball,
                mark size=4pt,fill=blue!20,opacity=.5](9,6,8,4,5) 
 \tkzKiviatLine[thick,color=green,mark=ball, ball color=green,
                mark size=4pt,fill=green!20,opacity=.5](3,8,8,6,8)                 
                \end{scope}
\LegendBox[shift={(-2cm,3.5cm)}]{current bounding box.south east}%
          {red/ ERFS,
           blue/ FiLoSoFi,
           green/ SRCV }                
\end{tikzpicture}
\end{adjustbox}
\end{frame}  

\end{document}

The result:

Remarks

Since you are loading babel with frenchb option it's a good idea to load the babel library:
```
\usetikzlibrary{babel}
```
There's no need to load amsmath nor graphicx with beamer since the class internally loads them.

Related Solutions

[Tex/LaTex] Polar plot: label and legend rotation

The rotate=90 key seems to work.

\documentclass{standalone}
\usepackage{pgfplots}
\usepgfplotslibrary{polar}
\begin{document}
\begin{tikzpicture}[scale=0.65]
\begin{polaraxis}[rotate=90]
\addplot coordinates {(0,1) (45,1)};
\addplot coordinates {(180,0.5) (172,1) (160,1)};
\legend{test}
\end{polaraxis}
\end{tikzpicture}
\end{document}

sample code output

For rotation of the legend: Christian (the package author/maintainer) wrote on gmane.comp.tex.pgfplots a while back:

the legend is typeset as pgf matrix for which the pgf manual says

Rotations and scaling have no eﬀect on a matrix as a whole (however, you can still transform the contents of the cells normally). Before the matrix is typeset, the rotational and scaling part of the transformation matrix is reset."

It seems the rotation of the matrix is not possible.

The post is old but the pgf manual still has this passage (Section 17.2 of the v2.10 manual). So it's probably still not possible.

[Tex/LaTex] TikZ: Drawing an arc from an intersection to an intersection

A solution which allows to draw intersection segments of any two intersections is available as tikz library fillbetween.

This library works as general purpose tikz library, but it is shipped with pgfplots and you need to load pgfplots in order to make it work:

\documentclass{standalone}

\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{fillbetween}

\begin{document}

\begin{tikzpicture}

\draw [name path=red,red] (120:1.06) circle (1.9);
%\draw [name path=yellow,yellow] (0:1.06) circle (2.12);
\draw [name path=green,green!50!black] (0:0.77) circle (2.41);
\draw [name path=blue,blue] (0:0) circle (1.06);

% substitute this temp path by `\path` to make it invisible:
\draw[name path=temp1, intersection segments={of=red and blue,sequence=L1}];
\draw[red,-stealth,ultra thick, intersection segments={of=temp1 and green,sequence=L3}];

\end{tikzpicture}

\end{document}

enter image description here

The key intersection segments is described in all detail in the pgfplots reference manual section "5.6.6 Intersection Segment Recombination"; the key idea in this case is to

create a temporary path temp1 which is the first intersection segment of red and blue, more precisely, it is the first intersection segment in the Left argument in red and blue : red. This path is drawn as thin black path. Substitute its \draw statement by \path to make it invisible.
Compute the desired intersection segment by intersecting temp1 and green and use the correct intersection segment. By trial and error I figured that it is the third segment of path temp1 which is written as L3 (L = left argument in temp1 and green and 3 means third segment of that path).

The argument involves some trial and error because fillbetween is unaware of the fact that end and startpoint are connected -- and we as end users do not see start and end point.

Note that you can connect these path segments with other paths. If such an intersection segment should be the continuation of another path, use -- as before the first argument in sequence. This allows to fill paths segments:

\documentclass{standalone}

\usepackage{tikz}
\usepackage{pgfplots}
\usetikzlibrary{fillbetween}

\begin{document}

\begin{tikzpicture}

\draw [name path=red,red] (120:1.06) circle (1.9);
%\draw [name path=yellow,yellow] (0:1.06) circle (2.12);
\draw [name path=green,green!50!black] (0:0.77) circle (2.41);
\draw [name path=blue,blue] (0:0) circle (1.06);

% substitute this temp path by `\path` to make it invisible:
\draw[name path=temp1, intersection segments={of=red and blue,sequence=L1}];
\draw[red,fill=blue,-stealth,ultra thick, intersection segments={of=temp1 and green,sequence=L3}]  
    [intersection segments={of=temp1 and green, sequence={--R2}}]
;

\end{tikzpicture}

\end{document}