[Tex/LaTex] How to color each column in a bar chart with different colors

barbar chartpgfplotstikz-pgf

I have the following bar chart and I would like to color each column differently. Both columns are in the same plot, when I separate them just to give a different color values for each one the appearance of the bar chart changes. Is there a way to specify different colors for the same plot?

 \documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}


\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{bchart}
\usetikzlibrary{decorations.pathreplacing}
\usepackage{subfig}
\pgfplotsset{compat=1.10}

\definecolor{RYB2}{RGB}{245,245,245}
\definecolor{RYB1}{RGB}{218,232,252}
\definecolor{RYB4}{RGB}{108,142,191}


\begin{document}




\begin{figure}
    \centering


     \subfloat[][name]{\resizebox{0.45\textwidth}{!}{
                                    \begin{tikzpicture}
                                \begin{axis}[
                                symbolic x coords={col1, col2, col3},
                                xtick=data,
                                ylabel=Passed Challenges(\%),
                                xticklabel style={rotate=45,anchor=north east},
                                ymajorgrids,
                                bar width=17pt,
                                ]
                                \addplot[ybar,fill=RYB1] coordinates {
                                    (col1, 44.71) 
                                    (col2, 26.57) 
                                    (col3, 45.42) 
                                };
                                \end{axis}
                            \end{tikzpicture}}}
    \caption{Caption}
    \label{fig:my_label}
\end{figure}


\end{document}

Thank you

Best Answer

Just do \addplotfor each column with a defined color.

\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{graphicx}    
\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{bchart}
\usetikzlibrary{decorations.pathreplacing}
\usepackage{subfig}
\pgfplotsset{compat=1.10}

\definecolor{RYB2}{RGB}{245,245,245}
\definecolor{RYB1}{RGB}{218,232,252}
\definecolor{RYB4}{RGB}{108,142,191}

\begin{document}    

\begin{figure}
    \centering    

     \subfloat[][name]{\resizebox{0.45\textwidth}{!}{
                                    \begin{tikzpicture}
                                \begin{axis}[
                                symbolic x coords={col1,,col2,,col3},
                                xticklabel style={rotate=45,anchor=north east},
                                xtick={col1,col2,col3},
                                ylabel=Passed Challenges(\%),
                                ymajorgrids,
                                bar width=17pt,
                                ]
                                \addplot[ybar,fill=RYB1] 
                                coordinates {(col1,44.71)};

                                \addplot[ybar,fill=RYB2] 
                                coordinates {(col2,26.57)};

                                \addplot[ybar,fill=RYB4] 
                                coordinates {(col3,45.42)};

                                \end{axis}
                            \end{tikzpicture}}}
    \caption{Caption}
    \label{fig:my_label}
\end{figure}    

\end{document}

Related Solutions

[Tex/LaTex] How to hide empty (value 0) ybars with pgfplots

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}

[Tex/LaTex] pgfplots: percentage in matrix plot

It does not work in your MWE because you are overwriting it by also giving the option nodes near coors to the \addplot command. Remove the latter one (or specify format here), and it will print. I added a thinspace before the percentage sign, although it can also be recommended to load the siunitx package and let that format and typeset the values for you.

Anyway, here's the quickfixed version:

\documentclass[border=3pt]{standalone}
\usepackage{pgfplots}
\pgfplotsset{%
  width=5cm,
  height=18cm,
  compat=1.13,
  colormap={blackwhite}{gray(0cm)=(1); gray(1cm)=(0.5)},
  xticklabels={LPIBG, ALL, HPIBG},
  xtick={0,...,2},
  ytick=\empty
}

\begin{document}
\begin{tikzpicture}
\begin{axis}[%
  enlargelimits=false,
  xlabel style={font=\footnotesize},
  ylabel style={font=\footnotesize},
  legend style={font=\footnotesize},
  xticklabel style={font=\footnotesize},
  yticklabel style={font=\footnotesize},
  colorbar,
  colorbar style={%
    ytick={0,20,40,60,80,100},
    yticklabels={0,20,40,60,80,100},
    yticklabel={\pgfmathprintnumber\tick\,\%},
    yticklabel style={font=\footnotesize}
  },
  point meta min=0,
  point meta max=100,
  nodes near coords={\pgfmathprintnumber\pgfplotspointmeta\,\%},
  every node near coord/.append style={xshift=0pt,yshift=-7pt, black, font=\footnotesize},
]

\addplot[
matrix plot,
mesh/cols=3,
point meta=explicit]
table[meta=C]{
  x y C
  0 0 80
  1 0 36
  2 0 40
  0 1 64
  1 1 80
  2 1 60
  0 2 52
  1 2 84
  2 2 72
  0 3 72
  1 3 28
  2 3 32
  0 4 56
  1 4 84
  2 4 80
  0 5 72
  1 5 52
  2 5 44
  0 6 4
  1 6 84
  2 6 41
  0 7 37
  1 7 69
  2 7 84
  0 8 63
  1 8 53
  2 8 82
  0 9 78
  1 9 74
  2 9 39
  0 10 39
  1 10 63
  2 10 88
  0 11 76
  1 11 74
  2 11 49
  0 12 39
  1 12 6
  2 12 88
  0 13 46
  1 13 33
  2 13 75
  0 14 88
  1 14 67
  2 14 54
  0 15 79
  1 15 83
  2 15 75
  0 16 50
  1 16 46
  2 16 71
  0 17 92
  1 17 71
  2 17 75
  0 18 46
  1 18 33
  2 18 8
};
\end{axis}
\end{tikzpicture}
\end{document}

Best Answer

Related Solutions

[Tex/LaTex] How to hide empty (value 0) ybars with pgfplots

[Tex/LaTex] pgfplots: percentage in matrix plot

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