[Tex/LaTex] PGFPlots: symbolic x coords + extra ticks

pgfplots

how can i add in this plot the extra x and y ticks ?
enter image description here

\documentclass[border=0.5mm,12pt]{standalone}

\usepackage{pgfplots,pgfplotstable}        % Grafici

\pgfplotsset{%
            mesh line legend/.style={legend image code/.code=\meshlinelegend#1},%
            /pgf/number format/use comma,%
            compat=newest,%
%            height=9cm,%
            width=12cm%
}



\begin{document}
%\begin{figure}
\centering
\begin{tikzpicture}
\begin{axis}[%
ybar,
/pgf/number format/fixed,
xtick=data,
tick style={thin,black},
ymin=0, ymax=12,
point meta min={0},
minor ytick={0,0.4,...,12},
point meta max={12},
yticklabel shift=2pt,
xticklabel shift=2pt,
xlabel=\large {Classe},
ylabel=\large {Frequenza},
ymajorgrids=true,
xticklabel interval boundaries,
symbolic x coords={%
                  $1$,
                  $2$,
                  $3$,
                  $4$,
                  $5$,
                  $6$,
                  $7$
                  },
colorbar,
colorbar style={
    /pgf/number format/fixed,
    xticklabel shift=2pt,
    xticklabel style={text height=1.5ex}
},
axis line style={draw=none}, after end axis/.append code={\draw (rel axis cs:0,0) rectangle (rel axis cs:1,1);},
colormap={new}{color(0cm)=(violet);color(1cm)=(blue);color(2cm)=(cyan);color(3cm)=(green);color(4cm)=(yellow);color(5cm)=(orange);color(6cm)=(red)}
]
\addplot[%
        ybar interval,
        draw=black
        ] coordinates{%
             ($1$, 6)
             ($2$, 9)
             ($3$, 11)
             ($4$, 12)
             ($5$, 7)
             ($6$, 5)
             ($7$, 0)
             };
\end{axis}
%\end{figure}
\end{tikzpicture}
\end{document}

Best Answer

You shouldn't use symbolic coordinates just to change the alignment. Symbolic coordinates are quite unflexible. You can get the same alignment by simply setting x tick label as interval with normal numerical coordinates.

\documentclass[border=0.5mm,12pt]{standalone}

\usepackage{pgfplots,pgfplotstable}        % Grafici

\pgfplotsset{%
            mesh line legend/.style={legend image code/.code=\meshlinelegend#1},%
            /pgf/number format/use comma,%
            compat=newest,%
%            height=9cm,%
            width=12cm%
}



\begin{document}
%\begin{figure}
\centering
\begin{tikzpicture}
\begin{axis}[%
ybar,
/pgf/number format/fixed,
xtick=data,
tick style={thin,black},
ymin=0, ymax=12,
point meta min={0},
minor ytick={0,0.4,...,12},
point meta max={12},
yticklabel shift=2pt,
xticklabel shift=2pt,
xlabel=\large {Classe},
ylabel=\large {Frequenza},
ymajorgrids=true,
%xticklabel interval boundaries,
colorbar,
colorbar style={
    /pgf/number format/fixed,
    xticklabel shift=2pt,
    xticklabel style={text height=1.5ex}
},
axis line style={draw=none}, after end axis/.append code={\draw (rel axis cs:0,0) rectangle (rel axis cs:1,1);},
x tick label as interval,
extra x ticks=3,
extra x tick labels=3.5,
extra x tick style={
red,
x tick label as interval=false
},
colormap={new}{color(0cm)=(violet);color(1cm)=(blue);color(2cm)=(cyan);color(3cm)=(green);color(4cm)=(yellow);color(5cm)=(orange);color(6cm)=(red)}
]
\addplot[%
        ybar interval,
        draw=black
        ] coordinates{%
             (1, 6)
             (2, 9)
             (3, 11)
             (4, 12)
             (5, 7)
             (6, 5)
             (7, 0)
             };
\end{axis}
%\end{figure}
\end{tikzpicture}
\end{document}

Related Solutions

PGFPlots – How to Plot Two Time Series with Bounds Using PGFPlots

This happens because PGFPlots only uses one "stack" per axis: You're stacking the second confidence interval on top of the first. The easiest way to fix this is probably to use the approach described in "Is there an easy way of using line thickness as error indicator in a plot?": After plotting the first confidence interval, stack the upper bound on top again, using stack dir=minus. That way, the stack will be reset to zero, and you can draw the second confidence interval in the same fashion as the first:

\documentclass{standalone}
\usepackage{pgfplots, tikz}

\usepackage{pgfplotstable}

\pgfplotstableread{
temps   y_h y_h__inf    y_h__sup    y_f y_f__inf    y_f__sup    

1   0.237340    0.135170    0.339511    0.237653    0.135482    0.339823    
2   0.561320    0.422007    0.700633    0.165871    0.026558    0.305184    
3   0.694760    0.534205    0.855314    0.074856    -0.085698   0.235411    
4   0.728306    0.560179    0.896432    0.003361    -0.164765   0.171487    
5   0.711710    0.544944    0.878477    -0.044582   -0.211349   0.122184    
6   0.671241    0.511191    0.831291    -0.073347   -0.233397   0.086703    
7   0.621177    0.471219    0.771135    -0.088418   -0.238376   0.061540    
8   0.569354    0.431826    0.706882    -0.094382   -0.231910   0.043146    
9   0.519973    0.396571    0.643376    -0.094619   -0.218022   0.028783    
10  0.475121    0.366990    0.583251    -0.091467   -0.199598   0.016664    
}{\table}

\begin{document}
\begin{tikzpicture}

    \begin{axis}
    % y_h confidence interval
    \addplot [stack plots=y, fill=none, draw=none, forget plot]   table [x=temps, y=y_h__inf]   {\table} \closedcycle;
    \addplot [stack plots=y, fill=gray!50, opacity=0.4, draw opacity=0, area legend]   table [x=temps, y expr=\thisrow{y_h__sup}-\thisrow{y_h__inf}]   {\table} \closedcycle;
    % subtract the upper bound so our stack is back at zero
    \addplot [stack plots=y, stack dir=minus, forget plot, draw=none] table [x=temps, y=y_h__sup] {\table};

    % y_f confidence interval
    \addplot [stack plots=y, fill=none, draw=none, forget plot]   table [x=temps, y=y_f__inf]   {\table} \closedcycle;
    \addplot [stack plots=y, fill=gray!50, opacity=0.4, draw opacity=0, area legend]   table [x=temps, y expr=\thisrow{y_f__sup}-\thisrow{y_f__inf}]   {\table} \closedcycle;

    % the line plots (y_h and y_f)    
    \addplot [stack plots=false, very thick,smooth,blue]  table [x=temps, y=y_h]   {\table};
    \addplot [stack plots=false, very thick,smooth,blue]  table [x=temps, y=y_f]   {\table};
    \end{axis}

\end{tikzpicture}
\end{document}

PGFPlots – How to Hide Empty Ybars in Bar Charts

You can use

 y filter/.expression={y==0 ? nan : y}

in the options of \addplot.

\documentclass{article}

% ---------------------------------- tikz
\usepackage{pgfplots}          % to print charts
\pgfplotsset{compat=1.12}

\begin{document}

\begin{figure}
  \centering
  \begin{tikzpicture}
    \begin{axis} [
      % general
      ybar,
      scale only axis,
      height=0.5\textwidth,
      width=1.2\textwidth,
      ylabel={\# Dots},
      nodes near coords,
      xlabel={Variation},
      xticklabel style={
        rotate=90,
        anchor=east,
      },
      %enlarge x limits={abs value={3}},
      ]
      \addplot+[y filter/.expression={y==0 ? nan : y}] table [
        x=grade,
        y=value,
      ] {
grade   value
-11 0
-10 0
-9  0
-8  0
-7  0
-6  0
-5  3
-4  1
-3  2
-2  15
-1  11
0   179
1   8
2   1
3   0
4   1
5   2
6   0
7   0
8   0
9   0
10  0
11  0
      };
    \end{axis}
  \end{tikzpicture}
\end{figure}
\end{document}

Best Answer

Related Solutions

PGFPlots – How to Plot Two Time Series with Bounds Using PGFPlots

PGFPlots – How to Hide Empty Ybars in Bar Charts

Related Question