def genChart(width, height):
chart = VerticalBarChart()
chart.data = [(12, 11, 9, 6, 2, 22, 7)]
# Vertical axis - Y axis
chart.valueAxis.valueMin = 0
chart.valueAxis.valueMax = 25
chart.valueAxis.visible = 0 # hide
# Horizontal axis - X axis
chart.categoryAxis.categoryNames = [
'Asia', 'Africa', 'North America', 'South America', 'Antarctica',
'Europe', 'Australia'
]
# We could hide X axis like we did with Y axis:
# example: chart.categoryAxis.visible = 0
# Hidding the X axis will hide all the elements of X axis
# and we want to see the labels!
# example: chart.categoryAxis.labels.visible = 1 # by default they are visible
# So we just hide what we don't want to see!
chart.categoryAxis.visibleAxis = 0 # hide line
chart.categoryAxis.visibleTicks = 0 # hide line ticks
chart.categoryAxis.labels.angle = 90 # rotate labels
chart.categoryAxis.labels.dx = -30 # adjust labels position at x
chart.categoryAxis.labels.dy = 30 # adjust labels position at y
# Numbers above each bar
chart.barLabelFormat = '%s' # contains the provived string
chart.barLabels.nudge = 15 # space between the bar and the text
chart.barLabels.angle = -20 # rotate the text
chart.barLabels.fontName = 'barText' # registered font at report.py line 91
chart.barLabels.fontSize = 20
chart.barLabels.fillColor = colors.red
chart.barWidth = 5
chart.barSpacing = 8 # space between each bar
# NOTE: bar list doesn't work like we could expect,
# the first element apparently sets the configuration for all!
chart.bars[0].fillColor = colors.toColor('hsl(240, 100%, 20%)')
chart.bars[0].strokeColor = colors.white
chart.x = width * 5 / 100 # starts at 5% of width space
chart.y = height * 5 / 100 # starts at 5% of height space
chart.width = width * 90 / 100 # uses 90% of width
chart.height = height * 80 / 100 # uses 80% of height
titleShadow = String(
19,
height * 60 / 100 - 1, # x and y start point
'Average JC attacks by continent',
fontSize=20,
fontName='chartTitle', # registered font at report.py line 94
fillColor=colors.red)
title = String(
20,
height * 60 / 100, # x and y start point
'Average JC attacks by continent',
fontSize=20,
fontName='chartTitle', # registered font at report.py line 94
fillColor=colors.orange)
bounds = title.getBounds() # returns a tuple with (x1,y1,x2,y2)
rectangle = Rect(
bounds[0] - 3,
bounds[1], # x1 and y1
bounds[2] - bounds[0] + 3,
20 # x2 and y2
)
rectangle.fillColor = colors.black
drawing = Drawing()
drawing.add(rectangle)
drawing.add(titleShadow)
drawing.add(title)
drawing.add(chart)
# Bars bottom 'labels'
# For a better understand of this coordinates please
# see code guide
charWidth = utils.getStringWidth('A')
dataLen = len(chart.data[0]) # 7 elements
startPoint = chart.getBounds()[0]
barAndLabelWidth = chart.width / dataLen # total width / 7 elements
center = barAndLabelWidth / 2 - charWidth / 2
yPos = chart.y - 10
# Example:
# drawing.add(String(startPoint + barAndLabelWidth * 0 + center, chart.y - 10, 'A'))
# drawing.add(String(startPoint + barAndLabelWidth * 1 + center, chart.y - 10, 'B'))
# ...
# drawing.add(String(startPoint + barAndLabelWidth * 6 + center, chart.y - 10, 'G'))
for index, char in enumerate('ABCDEFG', start=0):
xPos = startPoint + barAndLabelWidth * index + center
drawing.add(String(xPos, yPos, char))
return drawing