Pie Chart --- Optional arguments of "\psChart"

Now we come to examine the optional arguments of command "\psChart". The following table lists the special options belong to "\psChart".

name	description	default value
chartSep	distance from the pie chart center to an outraged pie piece	10pt
chartColor	gray or color	gray
usercolor	a comma separated list of user defined colors for the pie pieces encloed with { }	{ }
chartNodeI	the position of the inner node, relative to the radius	0.75
chartNodeO	the position of the outer node, relative to the radius	1.5

With these arguments we can plot a outstanding pie chart.

\documentclass{article}
\usepackage{pstricks}
\usepackage{pstricks-add}
\usepackage{pst-plot}
\begin{document}
\begin{figure}
\centering
  \begin{pspicture}(-5,-5)(8,5)
    %Pie chart
    \psChart[chartSep=15pt,chartColor=color,
             chartNodeO=1.15,shadow=true,
             shadowsize=5pt]{15,20,30,20,15}
             {3}{4.75}
    %The Label for the outraged piece
    \ncline[linecolor=-chartFillColor3]
            {psChartI3}{psChartO3}
    \uput[l](psChartO3){\textcolor{chartFillColor3}
                        {\large The Most}
                       }
    %The legends
    \psframe[fillcolor=chartFillColor1,fillstyle=solid]
             (5.25,-5)(6.5,-4.5)
    \uput[r](6.5,-4.75){Traffic}
    \psframe[fillcolor=chartFillColor2,fillstyle=solid]
             (5.25,-4)(6.5,-3.5)
    \uput[r](6.5,-3.75){Clothes}
    \psframe[fillcolor=chartFillColor3,fillstyle=solid]
             (5.25,-3)(6.5,-2.5)
    \uput[r](6.5,-2.75){Food}
    \psframe[fillcolor=chartFillColor4,fillstyle=solid]
             (5.25,-2)(6.5,-1.5)
    \uput[r](6.5,-1.75){Rent}
    \psframe[fillcolor=chartFillColor5,fillstyle=solid]
             (5.25,-1)(6.5,-0.5)
    \uput[r](6.5,-0.75){Others}
  \end{pspicture}
\end{document}

Fig.1 An advanced practical example of pie chart plotting

Files downloads: tex ps pdf

Pie chart --- the simplest use of command "\psChart"

Command "\psChart" in package pstricks-add makes plot a pie chart very simple. The syntax of this command is "\psChart[options]{values1}{values2}{radius}". "values1" is the list of date to be plotted. "vaules2" is a list of outraged pieces. For example, if you want the 1st and 5-th sector to be outraged, you can specify this parameter as "{1,5}". "radius" is the radius of the pie chart. The color used to paint the num-th pie piece is named internally as "chartFillColornum".

Now let us have a try of this command.

  \begin{pspicture}(-5,-5)(8,5)
    %Pie chart
    \psChart{1,2,2,3,1,4}{1,5}{4.75}
    %The legends
    \psframe[fillcolor=chartFillColor1,
      fillstyle=solid](5.25,-5)(6.5,-4.5)
    \uput[r](6.5,-4.75){Pie 1}
    \psframe[fillcolor=chartFillColor2,
      fillstyle=solid](5.25,-4)(6.5,-3.5)
    \uput[r](6.5,-3.75){Pie 2}
    \psframe[fillcolor=chartFillColor3,
      fillstyle=solid](5.25,-3)(6.5,-2.5)
    \uput[r](6.5,-2.75){Pie 3}
    \psframe[fillcolor=chartFillColor4,
      fillstyle=solid](5.25,-2)(6.5,-1.5)
    \uput[r](6.5,-1.75){Pie 4}
    \psframe[fillcolor=chartFillColor5,
      fillstyle=solid](5.25,-1)(6.5,-0.5)
    \uput[r](6.5,-0.75){Pie 5}
    \psframe[fillcolor=chartFillColor6,
      fillstyle=solid](5.25,0)(6.5,0.5)
    \uput[r](6.5,0.25){Pie 6}
  \end{pspicture}

Fig.1 Pie chart plots in Pstricks

In the upper example, we see that a pie chart with radius "5" is plotted accroding to data "{1,2,2,3,1,4}", and the 1-st and 5-th pie pieces is outraged. This is exactly what we expected. And with the help of variable "chartFillColornum" we produced the legends.

Files Downloads: tex ps pdf