Line charts & line plots with options to manage colour, width,layout in PDF file by using Python ReportLab

Adding line chart to PDF file with options to change the width, color and layout by Python ReportLab

Horizontal Line chart

from reportlab.graphics.charts.linecharts import HorizontalLineChart

Here we have two set of data used to generate line graphs.

data = [
 (13, 5, 20, 22, 37, 45, 19, 4),
 (5, 20, 46, 38, 23, 21, 6, 14)
]

Using this data the graph is here.
Horizontal Line graph in PDF file

In this format we can collect sample data from SQLite or MySQL database and display the graph.

Category Axis and Value Axis

Category and value axis with spacing in PDF file

Full code is here. Different options are explained using the comment section.

from reportlab.lib import colors
my_path='G:\\My drive\\testing\\pypdf2\\my_pdf.pdf' 
from reportlab.graphics.shapes import Drawing
from reportlab.graphics.charts.linecharts import HorizontalLineChart
d=Drawing(1000,500) # width , height
lc=HorizontalLineChart()

data = [
 (13, 5, 20, 22, 37, 45, 19, 4),
 (5, 20, 46, 38, 23, 21, 6, 14)
]
lc.x = 50  # horizontal position
lc.y = 50  # vertical position 
lc.height = 400 # height of the chart area
lc.width = 930  # width of the chart area
lc.data = data
lc.lines[0].strokeWidth=2  # width of the line 1 
lc.lines[1].strokeWidth=4  # width of the line 2
lc.lines[0].strokeColor=colors.blue # line colour
lc.lines[1].strokeColor=colors.red  # line colour 
lc.valueAxis.valueMin = 0
lc.valueAxis.valueMax = 50
lc.valueAxis.valueStep = 10
lc.categoryAxis.labels.boxAnchor = 'ne'
lc.categoryAxis.labels.dx = 5
lc.categoryAxis.labels.dy = -2
lc.categoryAxis.labels.angle = 30
lc.categoryAxis.categoryNames = ['Jan-22','Feb-22','Mar-22',
 'Apr-22','May-22','Jun-22','Jul-22','Aug-22']
d.add(lc, '')

from reportlab.graphics import renderPDF
renderPDF.drawToFile(d, my_path, '')

Background colour of the chart

lc.fillColor=colors.yellow # background colour

Colour of lines

lc.lines[0].strokeColor=colors.blue # line colour
lc.lines[1].strokeColor=colors.red  # line colour

Line Plots

from reportlab.lib import colors
my_path='G:\\My drive\\testing\\pypdf2\\my_pdf.pdf' 
from reportlab.graphics.shapes import Drawing
from reportlab.graphics.charts.lineplots import LinePlot
from reportlab.graphics.widgets.markers import makeMarker
d=Drawing(1000,500) # width , height

data = [
 ((1,4), (2,2), (2.5,1), (3,3), (4,5)),
 ((1,3), (2,3), (2.5,2), (3.5,5), (4,6))
]
lp = LinePlot()
lp.x = 40
lp.y = 50
lp.height = 445
lp.width = 945
lp.data = data
lp.joinedLines = 1
lp.lines[0].symbol = makeMarker('FilledCircle')
lp.lines[1].symbol = makeMarker('Circle')
lp.lineLabelFormat = '%2.0f'
lp.strokeColor = colors.black
lp.xValueAxis.valueMin = 0
lp.xValueAxis.valueMax = 5
lp.xValueAxis.valueSteps = [1, 2, 2.5, 3, 4, 5]
lp.xValueAxis.labelTextFormat = '%2.1f'
lp.yValueAxis.valueMin = 0
lp.yValueAxis.valueMax = 7
lp.yValueAxis.valueSteps = [1, 2, 3, 5, 6]
d.add(lp)
from reportlab.graphics import renderPDF
renderPDF.drawToFile(d, my_path, '')

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Subhendu Mohapatra

Author & Instructor at plus2net

I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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Line charts in PDF file