模块 OneDMaps:
def LogisticMap(a,nIts,x):
for n in xrange(0,nIts):
return 4.*a*x*(1.-x)
实际程序:
# Import plotting routines
from pylab import *
import OneDMaps
def OneDMap(a,N,x,f):
return x.append(f(a,N,x))
# Simulation parameters
# Control parameter of the map: A period-3 cycle
a = 0.98
# Set up an array of iterates and set the initital condition
x = [0.1]
# The number of iterations to generate
N = 100
#function name in OneDMaps module
func = LogisticMap
# Setup the plot
xlabel('Time step n') # set x-axis label
ylabel('x(n)') # set y-axis label
title(str(func) + ' at r= ' + str(a)) # set plot title
# Plot the time series: once with circles, once with lines
plot(OneDMap(a,N,x,func), 'ro', OneDMap(a,N,x,func) , 'b')
该程序应该从模块 OneDMaps.py 调用一个函数,然后根据它的迭代绘制它。我收到错误“无法将序列乘以浮点类型的非整数”,并且我尝试使用 LogisticMap(float(a)...) 但这不起作用。此外,我希望函数名称显示在绘图的标题中,但我得到“在 r=0.98 处,而不是在 r=0.98 处显示 LogisticMap。