
This example demonstrates loading external image files as data symbols by using DataSet.setDataSymbol2.
ChartDirector Ver 4.1 (Python Edition)
Custom Symbols
Source Code Listing
#!/usr/bin/python from pychartdir import * # The data for the chart data0 = [600, 800, 1200, 1500, 1800, 1900, 2000, 1950] data1 = [300, 450, 500, 1000, 1500, 1600, 1650, 1600] # The labels for the chart labels = ["1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002"] # Create a XYChart object of size 450 x 250 pixels, with a pale yellow (0xffffc0) # background, a black border, and 1 pixel 3D border effect. c = XYChart(450, 250, 0xffffc0, 0, 1) # Set the plotarea at (60, 45) and of size 360 x 170 pixels, using white (0xffffff) # as the plot area background color. Turn on both horizontal and vertical grid lines # with light grey color (0xc0c0c0) c.setPlotArea(60, 45, 360, 170, 0xffffff, -1, -1, 0xc0c0c0, -1) # Add a legend box at (60, 20) (top of the chart) with horizontal layout. Use 8 pts # Arial Bold font. Set the background and border color to Transparent. c.addLegend(60, 20, 0, "arialbd.ttf", 8).setBackground(Transparent) # Add a title to the chart using 12 pts Arial Bold/white font. Use a 1 x 2 bitmap # pattern as the background. c.addTitle("Information Resource Usage", "arialbd.ttf", 12, 0xffffff).setBackground( c.patternColor([0x000040, 0x000080], 2)) # Set the labels on the x axis c.xAxis().setLabels(labels) # Reserve 8 pixels margins at both side of the x axis to avoid the first and last # symbols drawing outside of the plot area c.xAxis().setMargin(8, 8) # Add a title to the y axis c.yAxis().setTitle("Population") # Add a line layer to the chart layer = c.addLineLayer2() # Add the first line using small_user.png as the symbol. layer.addDataSet(data0, 0xcf4040, "Users").setDataSymbol2("small_user.png") # Add the first line using small_computer.png as the symbol. layer.addDataSet(data1, 0x40cf40, "Computers").setDataSymbol2("small_computer.png") # Set the line width to 3 pixels layer.setLineWidth(3) # output the chart c.makeChart("customsymbolline.png") |
#!/usr/bin/python from pychartdir import * import os # The data for the chart data0 = [600, 800, 1200, 1500, 1800, 1900, 2000, 1950] data1 = [300, 450, 500, 1000, 1500, 1600, 1650, 1600] # The labels for the chart labels = ["1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002"] # Create a XYChart object of size 450 x 250 pixels, with a pale yellow (0xffffc0) # background, a black border, and 1 pixel 3D border effect. c = XYChart(450, 250, 0xffffc0, 0, 1) # Set the plotarea at (60, 45) and of size 360 x 170 pixels, using white (0xffffff) # as the plot area background color. Turn on both horizontal and vertical grid lines # with light grey color (0xc0c0c0) c.setPlotArea(60, 45, 360, 170, 0xffffff, -1, -1, 0xc0c0c0, -1) # Add a legend box at (60, 20) (top of the chart) with horizontal layout. Use 8 pts # Arial Bold font. Set the background and border color to Transparent. c.addLegend(60, 20, 0, "arialbd.ttf", 8).setBackground(Transparent) # Add a title to the chart using 12 pts Arial Bold/white font. Use a 1 x 2 bitmap # pattern as the background. c.addTitle("Information Resource Usage", "arialbd.ttf", 12, 0xffffff).setBackground( c.patternColor([0x000040, 0x000080], 2)) # Set the labels on the x axis c.xAxis().setLabels(labels) # Reserve 8 pixels margins at both side of the x axis to avoid the first and last # symbols drawing outside of the plot area c.xAxis().setMargin(8, 8) # Add a title to the y axis c.yAxis().setTitle("Population") # Add a line layer to the chart layer = c.addLineLayer2() # Add the first line using small_user.png as the symbol. layer.addDataSet(data0, 0xcf4040, "Users").setDataSymbol2(os.path.join( os.path.dirname(sys.argv[0]), "small_user.png")) # Add the first line using small_computer.png as the symbol. layer.addDataSet(data1, 0x40cf40, "Computers").setDataSymbol2(os.path.join( os.path.dirname(sys.argv[0]), "small_computer.png")) # Set the line width to 3 pixels layer.setLineWidth(3) # output the chart print "Content-type: image/png\n" binaryPrint(c.makeChart2(PNG)) |