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%
% hbars.tex
%
\section{Chart::HorizontalBars}
\name{Chart::HorizontalBars}
\file{HorizontalBars.pm}
\requires{Chart::Base, GD, Carp, FileHandle}
\begin{Description}
\class{HorizontalBars} is a subclass of \class{Chart::Base}.\\
The class \class{HorizontalBars} creates a chart with bars, that run horizontal.
\end{Description}
\parindent 0pt{\large Example:}
\begin{figure}[h]
\begin{center}
\includegraphics[scale=0.7]{d_hbars4.png}
\end{center}
\caption{Chart with horizontal bars}
\label{fig:hbars}
\end{figure}
\begin{verbatim}
use Chart::HorizontalBars;
$g = Chart::HorizontalBars->new();
$g->add_dataset ('Foo', 'bar', 'junk', 'ding', 'bat');
$g->add_dataset (4, 3, 4, 2, 8);
$g->add_dataset (2, 10, 3, 8, 3);
%hash = ( 'title' => 'Horizontal Bars Demo',
'grid_lines' => 'true',
'x_label' => 'x-axis',
'y_label' => 'y-axis',
'include_zero' => 'true',
'x_ticks' => 'vertical',
);
$g->set (%hash);
$g->png ("hbars.png");
\end{verbatim}
\begin{Constructor}
An instance of a HorizontalBars object can be created with the constructor new():
\begin{quote}
\parindent 0pt
\fett{\$obj = Chart::HorizontalBars->new();}\\
\fett{\$obj = Chart::HorizontalBars->new(\parameter{width}, \parameter{height});}
\end{quote}
If \textit{new()} has no arguments, the constructor returns an image with the size 300x400 pixels.
If \textit{new()} has two arguments \parameter{width} and \parameter{height},
it returns an image with the desired size.
\end{Constructor}
\Methods
\method{All universal valid methods, see page \pageref{methods}: Chart::Base.}\\[\parabstand]
%
\Attributes
All universally valid options, see page \pageref{options}. Also available, these special options:
\begin{description}
\item['y\_axes'] Tells chart where to place the y-axis.
Valid values are 'left', 'right' and 'both'. Defaults to 'left'.
\item['spaced\_bars'] Leaves space between the groups of bars
at each data point when set to 'true'.
This just makes it easier to read a bar chart. Default is 'true'.
\item['skip\_y\_ticks']
Does the same fo the y-axis at a HorizontalBars chart as 'skip\_x\_ticks'
does for other charts. Defaults to 1.
\end{description}
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