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- from urllib.request import urlopen
- from reportlab.graphics.shapes import *
- from reportlab.graphics.charts.lineplots import LinePlot
- from reportlab.graphics.charts.textlabels import Label
- from reportlab.graphics import renderPDF
- URL = 'ftp://ftp.swpc.noaa.gov/pub/weekly/Predict.txt'
- COMMENT_CHARS = '#:'
- drawing = Drawing(400, 200)
- data = []
- for line in urlopen(URL).readlines():
- line = line.decode()
- if not line.isspace() and line[0] not in COMMENT_CHARS:
- data.append([float(n) for n in line.split()])
- pred = [row[2] for row in data]
- high = [row[3] for row in data]
- low = [row[4] for row in data]
- times = [row[0] + row[1]/12.0 for row in data]
- lp = LinePlot()
- lp.x = 50
- lp.y = 50
- lp.height = 125
- lp.width = 300
- lp.data = [list(zip(times, pred)),
- list(zip(times, high)),
- list(zip(times, low))]
- lp.lines[0].strokeColor = colors.blue
- lp.lines[1].strokeColor = colors.red
- lp.lines[2].strokeColor = colors.green
- drawing.add(lp)
- drawing.add(String(250, 150, 'Sunspots',
- fontSize=14, fillColor=colors.red))
- renderPDF.drawToFile(drawing, 'report2.pdf', 'Sunspots')
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