1 # -*- coding:utf-8 -*- 2 # Author:Vincent Zhang 3 4 from urllib.request import urlopen 5 from reportlab.graphics.shapes import * 6 from reportlab.graphics.charts.lineplots import LinePlot 7 from reportlab.graphics.charts.textlabels import Label 8 from reportlab.graphics import renderPDF 9 10 URL = 'ftp://ftp.swpc.noaa.gov/pub/weekly/Predict.txt' 11 COMMENT_CHARS = '#:' 12 drawing = Drawing(400, 200) 13 data = [] 14 for line in urlopen(URL).readlines(): 15 line = line.decode() 16 if not line.isspace() and line[0] not in COMMENT_CHARS: 17 data.append([float(n) for n in line.split()]) 18 pred = [row[2] for row in data] 19 high = [row[3] for row in data] 20 low = [row[4] for row in data] 21 times = [row[0] + row[1] / 12.0 for row in data] 22 lp = LinePlot() 23 lp.x = 50 24 lp.y = 50 25 lp.height = 125 26 lp.width = 300 27 lp.data = [list(zip(times, pred)), 28 list(zip(times, high)), 29 list(zip(times, low))] 30 lp.lines[0].strokeColor = colors.blue 31 lp.lines[1].strokeColor = colors.red 32 lp.lines[2].strokeColor = colors.green 33 drawing.add(lp) 34 drawing.add(String(250, 150, 'Sunspots', 35 fontSize=14, fillColor=colors.red)) 36 renderPDF.drawToFile(drawing, 'report2.pdf', 'Sunspots')