# How can I draw this population pyramid graph with pgfplots?

I'm using this code and it works fine: How can I draw a pretty population pyramid graph with pgfplots?

But I want to draw the population pyramid like this in figure. Please guide me how to di it. • Could you provide some code with what you have achieved so far by altering the code in the link? – Stefan Pinnow Mar 1 '16 at 6:28

I adapted the code from the link you provided in the question to give the desired result.

Because only the x values have tick lines it is needed to draw three axis: One for the "man" data, one for the "woman" data and one only for plotting the ydata, because the tick length cannot be set independently for the x and y axis.

For more details have a look at the comments in the code.

% done with pgfplots v1.13
\documentclass[10pt]{article}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\pgfplotsset{
compat=1.9,
%
% create a style which is used for all the axis
% this one is especially for drawing the axis plotting the y axis
blank pyramid axis style/.style={
width=0.5*\textwidth,
height=0.5*\textheight,
scale only axis,
%
xmin=0,
xmax=5.5,
ymin=-0.5,
ymax=20,
y dir=reverse,
enlarge y limits={value=0.075,upper},
%
xbar,
axis x line=left,
xtick align=outside,
%
bar width=1,
allow reversal of rel axis cs=false,
},
% this style is for the axis drawing the data
pyramid axis style/.style={
blank pyramid axis style,
%
% draw xtick's as percent values
xticklabel={%
\pgfmathprintnumber\tick\%%
},
% don't draw any ytick' values
ytick=\empty,
%            % for debugging purposes draw draw data from loaded table as ytick's
%            ytick=data,
%            y tick label style={
%                major tick length=0pt,
%                align=center,
%                text width=12.5mm,
%                inner sep=0pt,
%                draw=red,
%                text=red,
%            },
% just draw a line as axis lines
axis line style={-},
%
% draw nodes near coords' also in percentages
nodes near coords={%
\pgfmathprintnumber\pgfplotspointmeta\%%
},
% set the style of nodes near coords'
every node near coord/.append style={
font=\scriptsize,
color=black,
/pgf/number format/fixed,
},
},
}
\begin{document}
\begin{tikzpicture}
col sep=comma,
]{
age,man,woman
+100,0,4
95--99,3,6
90--94,10,16
85--89,43,57
80--84,103,111
75--79,175,224
70--74,274,322
65--69,421,427
60--64,514,524
55--59,578,606
50--54,732,785
45--49,885,911
40--44,1044,1120
35--39,1192,1289
30--34,1315,1306
25--29,1214,1362
20--24,1360,1336
15--19,1471,1406
10--14,1495,1446
5--9,1375,1351
0--4,1325,1257
% add a column in the table summing up the «man» and «woman» values
% accumulatively
% with the sum of all values one can calculate the percentages of the
% values
\pgfplotstablecreatecol[
expr accum={
round(\pgfmathaccuma) + \thisrow{man} + \thisrow{woman}
}{0}
% turn on fpu' library when numbers are larger than 16384
\tikzset{
fpu=true,
}
% get the number of data rows of the loaded table
\pgfmathsetmacro{\LastRow}{\pgfplotsretval-1}
% now get the last entry of the «sum» column which contains the
% sum of all «man» and «woman» values
% (for whatever reason this doesn't seem to work; it is returned
%  the value of the second row ...)
\pgfmathsetmacro{\Sum}{\pgfplotsretval}
\tikzset{
fpu=false,
}
% draw woman data on the «right» axis
\begin{axis}[
pyramid axis style,
%
% add here the additional key-values which are unique to this axis
axis y line*=left,
ytick=\empty,
name=popaxis,
]
y expr =\coordindex,x expr={\thisrow{woman}/\Sum*100},

\node [anchor=south] at (rel axis cs:0.25,1)
{\textcolor{magenta}{Woman}};
\end{axis}

% draw man data on the «left» axis
\begin{axis}[
pyramid axis style,
%
% where should this axis be plotted
at={(popaxis.west)},
anchor=east,
% shift to the left
xshift=-12.5mm,
%
% add here the additional key-values which are unique to this axis
x dir=reverse,
every node near coord/.append style={
anchor=east,
},
axis y line*=right,
]
y expr =\coordindex, x expr={\thisrow{man}/\Sum*100},

\node [anchor=south] at (rel axis cs:0.25,1)
{\textcolor{cyan}{Man}};
\end{axis}

% «dummy» axis to draw the y values
% (the extra axis is needed because it seems that the tick length cannot
%  be set independently for the x and y axis)
\begin{axis}[
blank pyramid axis style,
%
% where should this axis be plotted
at={(popaxis.west)},
anchor=east,
xshift=-12.5mm,
%
% add here the additional key-values which are unique to this axis
x dir=reverse,
axis y line*=right,
% don't draw xtick's (they are already drawn with ticks)
xtick=\empty,
% draw ytick's with the data from the table
ytick=data,
% set the style of yticklabels'
% (the labels should be plot centered between the axis;
%  therefore use align=center' and set the text width'
% so that
y tick label style={
align=center,
inner sep=0pt,
text width=12.5mm,
},
% set ticks length to zero
major tick length=0pt,
% make axis lines invisible
axis line style={
-,
draw=none,
},
]
% add a dummy plot so that the axis ticks are drawn correctly
%            % dummy nodes to check the values of \Sum' and \LastRow'
` 