Plotting only the maximum and minimum amplitude of the coexistence periodic orbit vs d

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Atom
Atom 2019-6-22
评论： dpb 2019-6-22
I am using matcont. I want to get the one parameter bifurcation diagram d vs x
x'=s*x*(1-x)*(x-b)-(1+a*y)*x*y/(1+h*(1+a*y)*x)
y'=(1+a*y)*x*y/(1+h*(1+a*y)*x)-d*y
Coordinates: x,y
Parameters: s,b,a,h,d
Parameter values: s = 3, a = 1:2, b=0.1, h = 0:4
I am using matlab r2015a, matcont6p10, Win 7, 32bit. I got the plot attached herewith.
I have two questions:
  1. See the blue Blue region. I want to plot only the maximum and minimum amplitude of the coexistence periodic orbit vs d. How to do that?
  2. How to export the data of d vs x plot from matcont to matlab?
I would be happy to get full answers in step by step.
Thanking you.
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dpb
dpb 2019-6-22
ML Answers isn't the correct forum for support for 3rd party applications -- looks like there's a pretty active support network there---
https://sourceforge.net/p/matcont/discussion/762215/
Still, what's preventing you from just recovering the data from the figure and processing it as at least a working solution even if not necessarily most efficient. Altho one presumes there's some way to save the data being generated.

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