绘制太阳黑子图

最新推荐文章于 2020-05-27 14:56:26 发布

no_cross_no_crown

最新推荐文章于 2020-05-27 14:56:26 发布

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分类专栏： Python 文章标签： import report string float url

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数据来源：http://www.swpc.noaa.gov/ftpdir/weekly/Predict.txt

代码：

sunspots.py

from urllib import urlopen from reportlab.lib import colors 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='http://www.swpc.noaa.gov/ftpdir/weekly/Predict.txt' COMMENT_CHARS='#:' drawing=Drawing(400,200) data=[] for line in urlopen(URL).readlines(): if not line.isspace() and not line[0] 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=[zip(times,pred),zip(times,high),zip(times,low)] lp.lines[0].strokeColor=colors.blue lp.lines[0].strokeColor=colors.red lp.lines[0].strokeColor=colors.green drawing.add(lp) drawing.add(String(250,150,'Sunspots',fontSize=14,fillColor=colors.red)) renderPDF.drawToFile(drawing,'report2.pdf','Sunspots')

效果图：