#!/usr/bin/python
from pychartdir import *
#
# We use a random number generator to simulate the data from 9:30 to 4:30
# with one data point every 4 minutes. The total number of points during that
# period is 106. (7 hours x 15 points/hour + 1)
#
noOfPoints = 106
#Assume we have not reached the end of the day yet, and only 85 points are
#available. Create a random table object of 1 col x 85 rows, using 9 as seed.
rantable = RanTable(9, 1, 85)
#Set the 1st column to start with 1800 and with random delta from -5 to 5.
rantable.setCol(0, 1800, -5, 5)
#Get the data as the 1st column of the random table
data = rantable.getCol(0)
#The x-axis labels for the chart
labels = ["-", "10am", "-", " ", "-", "12am", "-", " ", "-", "2pm", "-", " ",
"-", "4pm", "-"]
#
# Now we obtain the data into arrays, we can start to draw the chart using
# ChartDirector
#
#Create a XYChart object of size 180 x 180 pixels with a blue background
#(0x9c9cce)
c = XYChart(180, 180, 0x9c9cce)
#Add titles to the top and bottom of the chart using 7.5pt Arial font. The text
#is white 0xffffff on a deep blue 0x31319C background.
c.addTitle2(Top, "STAR TECH INDEX 2003-01-28", "arial.ttf", 7.5, 0xffffff,
0x31319c)
c.addTitle2(Bottom, "LATEST STI:1809.41 (+14.51)", "arial.ttf", 7.5, 0xffffff,
0x31319c)
#Set the plotarea at (31, 21) and of size 145 x 124 pixels, with a pale yellow
#(0xffffc8) background.
c.setPlotArea(31, 21, 145, 124, 0xffffc8)
#Add custom text at (176, 21) (top right corner of plotarea) using 11pt Times
#Bold Italic font/red (0xc09090) color
c.addText(176, 21, "Chart Demo", "timesbi.ttf", 11, 0xc09090).setAlignment(
TopRight)
#Use 7.5 pts Arial as the y axis label font
c.yAxis().setLabelStyle("", 7.5)
#Set the labels on the x axis by spreading the labels evenly between the first
#point (index = 0) and the last point (index = noOfPoints - 1)
c.xAxis().setLinearScale(0, noOfPoints - 1, labels)
#Use 7.5 pts Arial as the x axis label font
c.xAxis().setLabelStyle("", 7.5)
#Add a deep blue (0x000080) line layer to the chart
c.addLineLayer(data, 0x80)
#output the chart
c.makeChart("enhancedline.png")
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