python生成曲线图

利用python生成曲线图像的脚本，参考自：http://www.lorenzogil.com/projects/pycha/

 

import cairo
import pycha.bar
width,height=500,400
surface=cairo.ImageSurface(cairo.FORMAT_ARGB32,width,height)
dataSet=(
('dateset1',((0,1),(1,3),(2,2.5))),
('dateset2',((0,2),(1,4),(2,3))),
('dateset3',((0,5),(1,1,),(2,0.5))),
)
options={
'legend':{'hide':False},
'background':{'color': '#f0f0f0'},
}
chart=pycha.bar.VerticalBarChart(surface,options)
chart.addDataset(dataSet)
chart.render()
surface.write_to_png('test.png')

效果图：