Python uses reportlab for drawing examples

Python uses reportlab for drawing examples

This article describes how to use reportlab in python.

Preparations

 

Development Environment: python2.6, reportlab

 

Prepare a Chinese font file: simsun. ttc

 

Code:

 

 

The Code is as follows:

#! /Usr/bin/env python2.6

# Coding: UTF-8

 

Import traceback

 

From reportlab. graphics. shapes import Drawing

From reportlab. graphics. charts. lineplots import LinePlot

From reportlab. graphics. charts. textlabels import Label

From reportlab. graphics import renderPDF

From reportlab. graphics. widgets. markers import makeMarker

From reportlabw.base import into metrics, ttfonts

 

# Note the data type,

# Each data point is a tuples

# A curve corresponds to a tuple storing data point tuples

# A chart can contain multiple curves and store the curve tuples in the list.

Data = [(1,100), (2,200), (3,300), (4,400), (5,500), (3,400 ), (), ()]

 

Drawing = Drawing (500,300)

 

Lp = LinePlot ()

Lp. x = 50 # coordinate axis Center

Lp. y = 30

Lp. height = 250

Lp. width = 400

Lp. data = data

Lp. joinedLines = 1

Lp. lines. symbol = makeMarker ('filledcircle ')

 

Lp. xValueAxis. valueMin = 1

Lp. xValueAxis. valueMax = 5

Lp. xValueAxis. valueStep = 1

 

Lp. yValueAxis. valueMin = 0

Lp. yValueAxis. valueMax = 500

Lp. yValueAxis. valueStep = 100

Drawing. add (lp)

 

Title = Label ()

# To display Chinese characters, you must register a Chinese font.

Using metrics. registerFont (ttfonts. TTFont ("haha", "simsun. ttc "))

Title. fontName = "haha"

Title. fontSize = 12

Title_text = unicode (' ', 'gbk ')

# Title_text = "abc"

Title. _ text = title_text

Title. x = 250

Title. y= 280

Title. textAnchor = 'middle'

Drawing. add (title)

 

Xlabel = Label ()

Xlabel. _ text = 'X'

Xlabel. fontSize = 12

Xlabel. x = 480

Xlabel. y = 30

Xlabel. textAnchor = 'middle'

Drawing. add (Xlabel)

 

Ylabel = Label ()

Ylabel. _ text = "y"

Ylabel. fontSize = 12

Ylabel. x = 40

Ylabel. y = 295

Ylabel. textAnchor = 'middle'

Drawing. add (Ylabel)

 

Try:

Drawing. save (formats = ['gif'], outDir = ".", fnRoot = "abc ")

Except t:

Traceback. print_exc ()