reportlab#
Links: notebook
, html, PDF
, python
, slides, GitHub
reportlab is the best option if you want to draw graph directly in PDF. Otherwise, code is usually longer with this module compare to matpotlib for example.
documentation source installation tutorial
from jyquickhelper import add_notebook_menu
add_notebook_menu()
example#
from reportlab.graphics.charts.legends import Legend
from reportlab.graphics.charts.lineplots import ScatterPlot
from reportlab.graphics.shapes import Drawing, _DrawingEditorMixin, String
from reportlab.graphics.charts.textlabels import Label
from reportlab.graphics.samples.excelcolors import *
class Scatter(_DrawingEditorMixin,Drawing):
def __init__(self,width=200,height=150,*args,**kw):
Drawing.__init__(self,width,height,*args,**kw)
self._add(self,ScatterPlot(),name='chart',validate=None,desc="The main chart")
self.chart.width = 115
self.chart.height = 80
self.chart.x = 30
self.chart.y = 40
self.chart.lines[0].strokeColor = color01
self.chart.lines[1].strokeColor = color02
self.chart.lines[2].strokeColor = color03
self.chart.lines[3].strokeColor = color04
self.chart.lines[4].strokeColor = color05
self.chart.lines[5].strokeColor = color06
self.chart.lines[6].strokeColor = color07
self.chart.lines[7].strokeColor = color08
self.chart.lines[8].strokeColor = color09
self.chart.lines[9].strokeColor = color10
self.chart.fillColor = backgroundGrey
self.chart.lineLabels.fontName = 'Helvetica'
self.chart.xValueAxis.labels.fontName = 'Helvetica'
self.chart.xValueAxis.labels.fontSize = 7
self.chart.xValueAxis.forceZero = 0
self.chart.data = [((100,100), (200,200), (250,210), (300,300), (400,500)), ((100,200), (200,300), (250,200), (300,400), (400, 600))]
self.chart.xValueAxis.avoidBoundFrac = 1
self.chart.xValueAxis.gridEnd = 115
self.chart.xValueAxis.tickDown = 3
self.chart.xValueAxis.visibleGrid = 1
self.chart.yValueAxis.tickLeft = 3
self.chart.yValueAxis.labels.fontName = 'Helvetica'
self.chart.yValueAxis.labels.fontSize = 7
self._add(self,Label(),name='Title',validate=None,desc="The title at the top of the chart")
self.Title.fontName = 'Helvetica-Bold'
self.Title.fontSize = 7
self.Title.x = 100
self.Title.y = 135
self.Title._text = 'Chart Title'
self.Title.maxWidth = 180
self.Title.height = 20
self.Title.textAnchor ='middle'
self._add(self,Legend(),name='Legend',validate=None,desc="The legend or key for the chart")
self.Legend.colorNamePairs = [(color01, 'Widgets'), (color02, 'Sprockets')]
self.Legend.fontName = 'Helvetica'
self.Legend.fontSize = 7
self.Legend.x = 153
self.Legend.y = 85
self.Legend.dxTextSpace = 5
self.Legend.dy = 5
self.Legend.dx = 5
self.Legend.deltay = 5
self.Legend.alignment ='right'
self.chart.lineLabelFormat = None
self.chart.xLabel = 'X Axis'
self.chart.y = 30
self.chart.yLabel = 'Y Axis'
self.chart.yValueAxis.labelTextFormat = '%d'
self.chart.yValueAxis.forceZero = 1
self.chart.xValueAxis.forceZero = 1
self._add(self,0,name='preview',validate=None,desc=None)
import os
filename = Scatter().save(formats=['pdf'], outDir=os.path.abspath("."), fnRoot='scatter')
print(os.path.split(filename)[-1])
scatter.pdf
filename = Scatter().save(formats=['svg'], outDir=os.path.abspath("."), fnRoot='scatter')
from IPython.display import SVG
SVG(filename)