"Dashed lines and number formats"
from reportlab.graphics.charts.lineplots import LinePlot
from reportlab.lib.colors import PCMYKColor
from reportlab.graphics.charts.legends import LineLegend
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin, Line
from reportlab.lib.validators import Auto
from reportlab.lib.styles import black
from reportlab.graphics.charts.axes import XValueAxis, YValueAxis, AdjYValueAxis, NormalDateXValueAxis
class LineChart03(_DrawingEditorMixin,Drawing):
'''
Chart features
============
- **chart.yValueAxis.labelTextScale = 1000:** Multiplies y-values in the data by a scaling factor of 1000
- **chart.xValueAxis.xLabelFormat = '{mm}/{dd}/{yy}':** Sets the date format to display on the x-axis. The x-axis accepts data values as integers in the format yyyymmdd
- **chart.xValueAxis.labels.angle = 90:** Rotates the x-axis labels such that they are vertical
- **chart.yValueAxis.labelTextFormat = '$%0.2f':** Describes the formatting of the y-axis; note the addition of the '$' sign
- **chart.lines[0].strokeDashArray = (1, 1):** Gives the dash pattern of the line, lengths in points, alternating between filled and empty space
- **chart.lines[1].strokeDashArray = (6, 2):** Gives the dash pattern of the line, lengths in points, alternating between filled and empty space
- **chart.lines[2].strokeDashArray = (2, 2, 2, 2, 10):** Gives the dash pattern of the line, lengths in points, alternating between filled and empty space
'''
def __init__(self,width=558,height=140,*args,**kw):
Drawing.__init__(self,width,height,*args,**kw)
# font
fontName = 'Helvetica'
# common values
strokeWidth = 0.5
dashArray = (0.3,1)
lineCap = 1
overShoot = 7.5
# chart
self._add(self,LinePlot(),name='chart',validate=None,desc=None)
# colours
colorsList = [PCMYKColor(65.1,72.16,33.33,14.51),PCMYKColor(50.98,28.63,41.18,1.18),PCMYKColor(0,0,0,100),PCMYKColor(0,0,0,0),PCMYKColor(0,0,0,0),PCMYKColor(0,0,0,0)]
for i, color in enumerate(colorsList[:3]): self.chart.lines[i].strokeColor = color
# x axis
self.chart.xValueAxis = NormalDateXValueAxis()
self.chart.xValueAxis.labels.fontName = fontName
self.chart.xValueAxis.labels.fontSize = 6
self.chart.xValueAxis.labels.boxAnchor ='autox'
self.chart.xValueAxis.labels.angle = 90
self.chart.xValueAxis.labels.rightPadding = 2
self.chart.xValueAxis.xLabelFormat = '{mm}/{dd}/{yy}'
self.chart.xValueAxis.strokeDashArray = dashArray
self.chart.xValueAxis.strokeLineCap = lineCap
self.chart.xValueAxis.maximumTicks = 20
self.chart.xValueAxis.forceFirstDate = 1
self.chart.xValueAxis.dailyFreq =0
self.chart.xValueAxis.forceEndDate =1
self.chart.xValueAxis.minimumTickSpacing = 15
#self.chart.xValueAxis.niceMonth=0
# y axis
#self.chart.yValueAxis = AdjYValueAxis()
self.chart.yValueAxis.labels.fontName = fontName
self.chart.yValueAxis.labels.fontSize = 6
self.chart.yValueAxis.labelTextFormat = '$%0.2f'
self.chart.yValueAxis.labels.rightPadding = 7
self.chart.yValueAxis.strokeWidth = 0.5
self.chart.yValueAxis.strokeDashArray = dashArray
self.chart.yValueAxis.strokeLineCap = lineCap
#self.chart.yValueAxis.origShiftIPC = 1
self.chart.yValueAxis.maximumTicks = 15
self.chart.yValueAxis.rangeRound ='both'
self.chart.yValueAxis.avoidBoundFrac = 0.1
self.chart.yValueAxis.gridStrokeWidth = strokeWidth
self.chart.yValueAxis.gridStrokeDashArray = dashArray
self.chart.yValueAxis.gridStrokeLineCap = lineCap
self.chart.yValueAxis.visibleAxis = 0
self.chart.yValueAxis.visibleGrid = 1
# legend
self._add(self,LineLegend(),name='legend',validate=None,desc=None)
self.legend.colorNamePairs = Auto(obj=self.chart)
self.legend.fontName = fontName
self.legend.fontSize = 7
self.legend.alignment ='right'
self.legend.columnMaximum = 1
self.legend.dxTextSpace = 5
self.legend.variColumn = 1
self.legend.autoXPadding = 15
self._add(self,Line(self.chart.x,self.chart.y,self.chart.x,self.chart.y+self.chart.height,strokeWidth=strokeWidth,strokeDashArray=dashArray,strokeLineCap=lineCap),name='L0',validate=None,desc=None)
self._add(self,Line(self.chart.x+self.chart.width,self.chart.y,self.chart.x+self.chart.width,self.chart.y+self.chart.height,strokeWidth=strokeWidth,strokeDashArray=dashArray,strokeLineCap=lineCap),name='L1',validate=None,desc=None)
self._add(self,Line(self.chart.x-overShoot,self.chart.y,self.chart.x+self.chart.width+overShoot,self.chart.y, strokeWidth=strokeWidth),name='L2',validate=None,desc=None)
# sample data
self.chart.data = [[(20070201, 1.0), (20070228, 1.0089999999999999), (20070331, 1.0264), (20070430, 1.0430999999999999), (20070531, 1.0649), (20070630, 1.0720000000000001), (20070731, 1.0742), (20070831, 1.0553999999999999), (20070930, 1.0713999999999999), (20071031, 1.1031), (20071130, 1.093), (20071231, 1.1005), (20080131, 1.0740000000000001)], [(20070201, 1.0), (20070228, 1.0154000000000001), (20070331, 1.0155000000000001), (20070430, 1.0208999999999999), (20070531, 1.0132000000000001), (20070630, 1.0101), (20070731, 1.0185), (20070831, 1.0309999999999999), (20070930, 1.0388999999999999), (20071031, 1.0482), (20071130, 1.0670999999999999), (20071231, 1.0701000000000001), (20080131, 1.0880000000000001)], [(20070201, 1.0), (20070228, 1.0089999999999999), (20070331, 1.0182), (20070430, 1.0311999999999999), (20070531, 1.0471999999999999), (20070630, 1.0518000000000001), (20070731, 1.0532999999999999), (20070831, 1.0344), (20070930, 1.0470999999999999), (20071031, 1.0699000000000001), (20071130, 1.0613999999999999), (20071231, 1.0621), (20080131, 1.0455000000000001)]]
self._colorsList = [PCMYKColor(65.1,72.16,33.33,14.51,alpha=100), PCMYKColor(50.98,28.63,41.18,1.18,alpha=100), PCMYKColor(0,0,0,100,alpha=100), PCMYKColor(0,0,0,0,alpha=100), PCMYKColor(0,0,0,0,alpha=100), PCMYKColor(0,0,0,0,alpha=100)]
sNames = 'Liberty International', 'Persimmon', 'Royal Bank of Scotland',
for i in range(len(self.chart.data)): self.chart.lines[i].name = sNames[i]
for i in range(len(self.chart.data)): self.chart.lines[i].strokeColor = self._colorsList[i]
self.chart.lines[0].strokeColor = PCMYKColor(23,51,0,4,alpha=100)
self.chart.lines[2].strokeColor = PCMYKColor(100,60,0,50,alpha=100)
self.chart.lines[1].strokeColor = PCMYKColor(66,13,0,22,alpha=100)
self.chart.lines.strokeWidth = 2
self.chart.lines[1].strokeDashArray = (6, 2)
self.chart.lines[2].strokeDashArray = (2, 2, 2, 2, 10)
self.chart.lines[0].strokeDashArray = (1, 1)
self.chart.yValueAxis.labelTextScale = 1000
self.chart.x = 50
self.chart.xValueAxis.visible = 1
self.chart.xValueAxis.visibleGrid = 0
self.chart.xValueAxis.visibleTicks = 1
self.chart.xValueAxis.subGridStrokeWidth = 0.25
self.chart.xValueAxis.strokeWidth = 0.5
self.chart.xValueAxis.gridStrokeWidth = 0.25
self.width = 400
self.height = 200
self.chart.y = 50
self.chart.width = 300
self.chart.height = 100
self.L1.x1 = 350
self.L1.x2 = 350
self.L1.y1 = 50
self.L1.y2 = 150
self.L2.x1 = 50
self.L2.x2 = 350
self.L2.y1 = 50
self.L2.y2 = 50
self.L0.x1 = 50
self.L0.x2 = 50
self.L0.y1 = 50
self.L0.y2 = 150
self.L0.strokeWidth = 1
self.L1.strokeWidth = 1
self.L2.strokeWidth = 0.75
self.chart.yValueAxis.tickLeft = 0
self.legend.y = 175
self.legend.x = 100
if __name__=="__main__": #NORUNTESTS
LineChart03().save(formats=['pdf'],outDir='.',fnRoot=None)