





This example demonstrates the effects of different bar gaps configured using BarLayer.setBarGap.
ChartDirector Ver 4.1 (Python Edition)
Bar Gap
Source Code Listing
#!/usr/bin/python from pychartdir import * def createChart(img) : bargap = int(img) * 0.25 - 0.25 # The data for the bar chart data = [100, 125, 245, 147, 67] # The labels for the bar chart labels = ["Mon", "Tue", "Wed", "Thu", "Fri"] # Create a XYChart object of size 150 x 150 pixels c = XYChart(150, 150) # Set the plotarea at (27, 20) and of size 120 x 100 pixels c.setPlotArea(27, 20, 120, 100) # Set the labels on the x axis c.xAxis().setLabels(labels) if bargap >= 0 : # Add a title to display to bar gap using 8 pts Arial font c.addTitle(" Bar Gap = %s" % (bargap), "arial.ttf", 8) else : # Use negative value to mean TouchBar c.addTitle(" Bar Gap = TouchBar", "arial.ttf", 8) bargap = TouchBar # Add a bar chart layer using the given data and set the bar gap c.addBarLayer(data).setBarGap(bargap) # output the chart c.makeChart("gapbar%s.png" % img) createChart("0") createChart("1") createChart("2") createChart("3") createChart("4") createChart("5") |
#!/usr/bin/python from pychartdir import * import cgi # Get HTTP query parameters query = cgi.FieldStorage() bargap = int(query["img"].value) * 0.25 - 0.25 # The data for the bar chart data = [100, 125, 245, 147, 67] # The labels for the bar chart labels = ["Mon", "Tue", "Wed", "Thu", "Fri"] # Create a XYChart object of size 150 x 150 pixels c = XYChart(150, 150) # Set the plotarea at (27, 20) and of size 120 x 100 pixels c.setPlotArea(27, 20, 120, 100) # Set the labels on the x axis c.xAxis().setLabels(labels) if bargap >= 0 : # Add a title to display to bar gap using 8 pts Arial font c.addTitle(" Bar Gap = %s" % (bargap), "arial.ttf", 8) else : # Use negative value to mean TouchBar c.addTitle(" Bar Gap = TouchBar", "arial.ttf", 8) bargap = TouchBar # Add a bar chart layer using the given data and set the bar gap c.addBarLayer(data).setBarGap(bargap) # output the chart print "Content-type: image/png\n" binaryPrint(c.makeChart2(PNG)) |