pylab绘制曲线
曲线的颜色与符号:
符号 | ‘-‘,’—‘,’-.’,’:’,’.’,’,’,,o,^,v,<,>,s,+,x,D,d,1,2,3,4,h,H,p,| ,_ |
颜色 | b(蓝色),g(绿色),r(红色),c(青色),m(品红),y(黄色),k(黑色),w(白色) |
源程序:
from numpy import *
from pylab import *
x = linspace(-3, 3, 30) #三个参数:起点 终点 个数
y = x**3
plot(x, y,'r+')
show()
运行结果:
绘制多条曲线:
from numpy import *
from pylab import *
x = linspace(-1, 1, 30)
plot(x,x**3,'c+')
plot(x,2*sin(x),'b.')
show()
运行结果:
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