#!/usr/bin/python
from pychartdir import *
#The data for the bar chart
data = [-6.3, 2.3, 0.7, -3.4, 2.2, -2.9, -0.1, -0.1, 3.3, 6.2, 4.3, 1.6]
#The labels for the bar chart
labels = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
"Nov", "Dec"]
#Create a XYChart object of size 500 x 320 pixels
c = XYChart(500, 320)
#Add a title to the chart using Arial Bold Italic font
c.addTitle("Productivity Change - Year 2001", "arialbi.ttf")
#Set the plotarea at (50, 30) and of size 400 x 250 pixels
c.setPlotArea(50, 30, 400, 250)
#Add a bar layer to the chart
layer = c.addBarLayer2()
#Add a data set to the bar using a y zone color. The color is configured to be
#orange (0xff6600) below zero, and blue (0x6666ff) above zero.
layer.addDataSet(data, layer.yZoneColor(0, 0xff6600, 0x6666ff))
#Add labels to the top of the bar using 8 pt Arial Bold font. The font color is
#configured to be red (0xcc3300) below zero, and blue (0x3333ff) above zero.
layer.setAggregateLabelStyle("arialbd.ttf", 8, layer.yZoneColor(0, 0xcc3300,
0x3333ff))
#Set the labels on the x axis and use Arial Bold as the label font
c.xAxis().setLabels(labels).setFontStyle("arialbd.ttf")
#Draw the y axis on the right of the plot area
c.setYAxisOnRight(1)
#Use Arial Bold as the y axis label font
c.yAxis().setLabelStyle("arialbd.ttf")
#Add a title to the y axis
c.yAxis().setTitle("Percentage")
#Add a light blue (0xccccff) zone for positive part of the plot area
c.yAxis().addZone(0, 9999, 0xccccff)
#Add a pink (0xffffcc) zone for negative part of the plot area
c.yAxis().addZone(-9999, 0, 0xffcccc)
#output the chart
c.makeChart("posnegbar.png")
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