[Tex/LaTex] Horizontal bar chart with different colors for each bar

plottikz-pgf

I want to create a horizontal bar chart with different labels on the y-axis for each bar. Also, the value should be displayed on the right-hand side of each bar.

Fx:

"Test A" … red bar … 400

"Test B" … orange bar…150
etc.

Current output

Current code

\documentclass{article}

\usepackage{xcolor}
\usepackage{tikz}
\usepackage{pgfplots}

\newlength{\xdim}

\definecolor{findOptimalPartition}{HTML}{D7191C}
\definecolor{storeClusterComponent}{HTML}{FDAE61}
\definecolor{dbscan}{HTML}{ABDDA4}
\definecolor{constructCluster}{HTML}{2B83BA}

\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\begin{axis}[
    xbar stacked,
    legend style={
    legend columns=4,
        at={(xticklabel cs:0.5)},
        anchor=north,
        draw=none
    },
    ytick=data,
    axis y line*=none,
    axis x line*=bottom,
    tick label style={font=\footnotesize},
    legend style={font=\footnotesize},
    label style={font=\footnotesize},
    xtick={0,100,200,300,400,500,600},
    width=.9\textwidth,
    bar width=6mm,
    yticklabels={{Test A}, 
    {Test B}, 
    {Test C}, 
    {Test D}, 
    {Test E}, 
    {Test F}},
    xmin=0,
    xmax=600,
    area legend,
    y=8mm,
    enlarge y limits={abs=0.625},
]
\addplot[findOptimalPartition,fill=findOptimalPartition] coordinates
{(400,0) (0,0) (0,0) (0,0) (0,0) (0,0)};
\addplot[storeClusterComponent,fill=storeClusterComponent] coordinates
{(0,0) (150,1) (0,0) (0,0) (0,0) (0,0)};
\addplot[dbscan,fill=dbscan] coordinates
{(0,0) (0,0) (250,2) (0,0) (0,0) (0,0)};
\addplot[constructCluster,fill=constructCluster] coordinates
{(0,0) (0,0) (0,0) (50,3) (0,0) (0,0)};
\addplot[blue,fill=blue] coordinates
{(0,0) (0,0) (0,0) (0,0) (350,4) (0,0)};
\addplot[green,fill=green] coordinates
{(0,0) (0,0) (0,0) (0,0) (0,0) (100,5)};
\end{axis}  
\end{tikzpicture}
\caption{X}
\label{fig:stats}
\end{figure}
\end{document}

Best Answer

I don't know how to achieve that using pgfplot, but with simple tikz you could adapt this (using a foreach loop):

\documentclass{article}

\usepackage{xcolor}
\usepackage{tikz}

\definecolor{findOptimalPartition}{HTML}{D7191C}
\definecolor{storeClusterComponent}{HTML}{FDAE61}
\definecolor{dbscan}{HTML}{ABDDA4}
\definecolor{constructCluster}{HTML}{2B83BA}

\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
\foreach  \l/\x/\c[count=\y] in {find optimal partition/2/findOptimalPartition, store cluster component/3/storeClusterComponent, database scan/1.5/dbscan, construct cluster/2.2/constructCluster}
{\node[left] at (0,\y) {\l};
\draw[fill=\c] (0,\y-.4) rectangle (\x,\y+.4);}
\end{tikzpicture}
\end{figure}
\end{document}

UPDATE

Pure tikz again:

\documentclass{article}

\usepackage{xcolor}
\usepackage{tikz}

\definecolor{findOptimalPartition}{HTML}{D7191C}
\definecolor{storeClusterComponent}{HTML}{FDAE61}
\definecolor{dbscan}{HTML}{ABDDA4}
\definecolor{constructCluster}{HTML}{2B83BA}

\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}[x={(.01,0)}]
\foreach  \l/\x/\c[count=\y] in {find optimal partition/400/findOptimalPartition, 
store cluster component/150/storeClusterComponent, 
database scan/250/dbscan, 
construct cluster/50/constructCluster}
{\node[left] at (0,\y) {\l};
\fill[\c] (0,\y-.4) rectangle (\x,\y+.4);
\node[right] at (\x, \y) {\x};}
\draw (0,0) -- (600,0);
\foreach \x in {100, 200, ..., 600}
{\draw (\x,.2) -- (\x,0) node[below] {\x};}
\draw (0,0) -- (0,4.5);
\end{tikzpicture}
\end{figure}
\end{document}

If you use other pgfplots this will probably not be consistent with these plots.

With pgfplots, nodes near coords probably is the way to go.

Related Solutions

[Tex/LaTex] Horizontal waterfall chart with labels for each bar

Well, just for fun (and to better learn new tools) I did an implementation in lua, which can be run through LuaLatex.

The lua code reads from an external .cvs, in which data is expected to be in different lines (a number per line), and generates a tikz graphic which self-adapts its axis to the data read. Also, the generated tikz defines a set of coordinates named row1, row2 and so on located a the center of each bar, and a coordinate named min located at the x position of the leftmost bar. These coordinates can be used to put labels in the diagram, either centered on the bars or at the left of the graphic.

The colors used in the graphic are user-definable. If there are less colors than bars, they are cycled.

This is the LaTeX code:

\documentclass{book}
\usepackage{xcolor}
\usepackage{tikz}
\usepackage{filecontents}
\directlua{dofile("luaFunctions.lua")}

%create a pair of datafiles
\begin{filecontents*}{datafile1.csv}
  2
  3
  2
  -6
  -3
\end{filecontents*}
\begin{filecontents*}{datafile2.csv}
  3 
  4 
  2 
  3 
  -4   
  -6
  2 
  -5
\end{filecontents*}

% latex commands to execute the lua functions
\def\waterfallChart#1{\directlua{waterfallChart("#1")}}
\def\setColors#1{%
   \directlua{emptyColors()}%
   \foreach \c in {#1} {\directlua{addColor("\c")}}
}

% set some styles
\tikzset{bar connection/.style = {black!50, thick}}
\setColors{cyan!80!black!50, orange, blue!80!black, red, yellow}

\begin{document}
\begin{tikzpicture} % First graph
  \waterfallChart{datafile1.csv}  % This draws the chart
  % Now, adding labels, centered at each bar
  \foreach \label [count=\n from 1] in {foo, bar, bad, foobar, spam}
    \node at (row\n) {\label};
\end{tikzpicture}

\vskip 2cm

\begin{tikzpicture} % Second graph
  \setColors{brown,red,orange}   % Different colors for this one
  \waterfallChart{datafile2.csv} % Draw the chart
  % Put labels (at the left of the figure in this case)
  \foreach \label [count=\n from 1] in {foo, bar, bad, foobar, spam, eggs, lorem, ipsum}
    \node[left] at (row\n-|min) {\label};
\end{tikzpicture}
\end{document}

This is the result:

Result

And this is the content of the file luaFunctions.lua:

colors = {"blue","green"}  -- Default colors

function readDataFile(filename)
    local input = io.open(filename, 'r')
    local dataTable = {}
    local n
    for line in input:lines() do
       table.insert(dataTable, line)
    end
    input:close()
    return dataTable
end

function emptyColors()
    colors = {}
end

function addColor(c)
    table.insert(colors,c)
end

function computeExtremes(dataTable)
    local max, min, x
    x = 0.0
    min = 0.0
    max = 0.0
    for i,p in ipairs(dataTable) do
        x = x + p
        if (x<min) then min = x end
        if (x>max) then max = x end
    end
    return min, max
end

function waterfallChart(filename)
    local data = readDataFile(filename)
    local min, max, n_steps, step, color, xpos, ypos, barwidth, aux, spread

    -- Configure here as required
    barwidth = 0.5  -- Height of each bar in the chart
    spread = 1.4    -- Distance among baselines of the bars (in barwidth units)
    n_ticks = 6     -- Number of ticks in the x-axis

    min, max = computeExtremes(data)
    step = (max-min)/n_ticks
    max = min + n_ticks*step
    xpos = 0.0
    ypos = 0.0
    aux = 0
    -- Draw axes
    -- Vertical axis
    tex.print(string.format("\\draw (0,%f) -- (0, %f);",
               1.1*barwidth, -#data*spread*barwidth))
    -- Horizontal axis
    tex.print(string.format("\\foreach \\tick in {%d, %d, ..., %d}",
              min, min+step, max))
    tex.print(string.format("  \\draw (\\tick, %f) -- +(0, -2mm) node[below] {\\tick};",
              -#data*spread*barwidth))
    tex.print(string.format("\\coordinate (min) at (%f,%f);",
                  min+0.0, -#data*spread*barwidth))

    -- Draw the bars
    color = 1
    for i,p in ipairs(data) do
        tex.print(string.format("\\fill[%s] (%f,%f) rectangle +(%f, %f) coordinate[midway] (row%d);",
                  colors[color], xpos, ypos, p+0.0, barwidth, i))
        tex.print(string.format("\\draw[bar connection] (%f, %f) -- +(0,%f);",
                  xpos, ypos, spread*aux*barwidth))
        aux =   1
        ypos = ypos - spread*barwidth
        xpos = xpos + 1.0 * p
        color = color + 1
        if (color > #colors) then color = 1; end
    end
end

[Tex/LaTex] Histogram: different color for each bar

Here's one option using a loop and a filter (the discard if not style defined in Jake's answer to Different color for individual bar in bar chart & adding bar labels);

Since xtick=data places labels for the data on the first plot only, the first plot is left out of the loop to get all the labels:

\documentclass[a4paper,twoside,12pt]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8x]{inputenc}
\usepackage[english]{babel}
\usepackage{pgfplotstable}

\definecolor{color1}{rgb}{0.98, 0.81, 0.69}
\definecolor{color2}{rgb}{0.55, 0.71, 0.0}
\definecolor{color3}{rgb}{1.0, 0.6, 0.4}
\definecolor{color4}{rgb}{0.29, 0.59, 0.82}

\pgfplotscreateplotcyclelist{mycolor}{
{fill=color1!80, draw=color1},
{fill=color2!80, draw=color2},
{fill=color3!80, draw=color3},
{fill=color4!80, draw=color4},
}

\pgfplotsset{
    discard if/.style 2 args={
        x filter/.code={
            \ifdim\thisrow{#1} pt=#2pt
                \def\pgfmathresult{inf}
            \fi
        }
    },
    discard if not/.style 2 args={
        x filter/.code={
            \ifdim\thisrow{#1} pt=#2pt
            \else
                \def\pgfmathresult{inf}
            \fi
        }
    }
}


\begin{filecontents*}{coefficienti.dat}
T       K       Q       Kf      n
400     0.0463  32.9        5.78        0.321
500     0.124   24.8        6.30        0.275
600     0.115   24.6        6.30        0.261
700     1.64        24.4        11.9        0.151
\end{filecontents*}

\begin{document}

\begin{tikzpicture}
    \begin{axis} [
        ymin=0,
        ybar=0, bar width=20, bar shift=0,
        xtick={data},
        ymajorgrids=true,
        cycle list name=mycolor,
        nodes near coords,
        every node near coord/.append style = {
            /pgf/number format/.cd,
            fixed,
            fixed zerofill,
            precision=3
        }]

% first complete plot to place the x-axis labels
\addplot+ table[x=T,y=K] {coefficienti.dat};
% the bars with different colors
\pgfplotsinvokeforeach{500,600,700}{        
  \addplot+[discard if not={T}{#1}] table[x=T,y=K] {coefficienti.dat};
}
\end{axis}
\end{tikzpicture}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] Horizontal waterfall chart with labels for each bar

[Tex/LaTex] Histogram: different color for each bar

Related Question