[Tex/LaTex] Force symbolic x coords

pgfplotstikz-pgf

My x-axis value disappears if the bar graph is not complete:

\begin{tikzpicture}
    \begin{axis}[
    every axis plot post/.style={/pgf/number format/fixed},
    ybar = 5pt,
    bar width=12pt,
    x=1.75cm,
    ymin = 1,
    %ymax = 1000,
    ymode = log,
    axis on top,
    xtick=data,
    enlarge x limits=0.2,
    symbolic x coords={100, 250, 500, 1000},
    %restrict y to domain*=0:1200, % Cut values off at 14
    visualization depends on=rawy\as\rawy, % Save the unclipped values
    after end axis/.code={ % Draw line indicating break
        \draw [ultra thick, white, decoration={snake, amplitude=1pt}, decorate] (rel axis cs:0,1.05) -- (rel axis cs:1,1.05);
    },
    nodes near coords={%
        \pgfmathprintnumber[sci, sci superscript, precision=2]{\rawy}% Print unclipped values
    },
    axis lines*=left,
    clip=false,
    ylabel={runtime [ms]},
    xlabel={image size [edge]},
    tick label style={font=\footnotesize},
    legend style={at={(0.5,-0.22)},
        anchor=north,legend columns=-1},
    ]    
    \addplot coordinates {(100, 340) (250, 5716) (500, 50669)};
    \addplot coordinates {(100, 21.25) (250, 331.97) (500, 2722) (1000,21877)};
    \addplot coordinates {(100, 15.77) (250, 158.15) (500, 1287) (1000,13224)};

    \legend{Conventional, Separated, Separated with SIMD}

    \end{axis}
    \end{tikzpicture}

I just can't see the value 1000 on the x-axis because there are only 3 values for one group

Best Answer

One minimal effort fix is to use xtick={100, 250, 500, 1000} instead of xtick=data.

\documentclass[border=3.14mm,tikz]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\begin{document}
\begin{tikzpicture}
    \begin{axis}[
    every axis plot post/.style={/pgf/number format/fixed},
    ybar = 5pt,
    bar width=12pt,
    x=1.75cm,
    ymin = 1,
    %ymax = 1000,
    ymode = log,
    axis on top,
    %xtick=data,
    xtick={100, 250, 500, 1000},
    enlarge x limits=0.2,
    symbolic x coords={100, 250, 500, 1000},
    %restrict y to domain*=0:1200, % Cut values off at 14
    visualization depends on=rawy\as\rawy, % Save the unclipped values
    after end axis/.code={ % Draw line indicating break
        \draw [ultra thick, white, decoration={snake, amplitude=1pt}, decorate] (rel axis cs:0,1.05) -- (rel axis cs:1,1.05);
    },
    nodes near coords={%
        \pgfmathprintnumber[sci, sci superscript, precision=2]{\rawy}% Print unclipped values
    },
    axis lines*=left,
    clip=false,
    ylabel={runtime [ms]},
    xlabel={image size [edge]},
    tick label style={font=\footnotesize},
    legend style={at={(0.5,-0.22)},
        anchor=north,legend columns=-1},
    ]    
    \addplot coordinates {(100, 340) (250, 5716) (500, 50669)};
    \addplot coordinates {(100, 21.25) (250, 331.97) (500, 2722) (1000,21877)};
    \addplot coordinates {(100, 15.77) (250, 158.15) (500, 1287) (1000,13224)};

    \legend{Conventional, Separated, Separated with SIMD}

    \end{axis}
\end{tikzpicture}
\end{document}

Related Solutions

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

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}

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

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

PGFPlots – How to Hide Empty Ybars in Bar Charts

Related Question