Parul Verma

Dear Hil, I looked at the f-variable and I don't understand them. My system of ODEs have 9 variables, and I performed continuation for 50 steps. So, I assume that f should be of dimension 9 X 50. However, f was of dimension 110 X 50. Why is that so? Regards, Parul

Dear Hil, I increased ntst from 100 to 500 and found a PD point for which the normal form coefficient increased from approx. 10^-10 to 10^-7. Does this mean that there is definitely a PD point? Secondly, I tried 2 parameter continuation from this PD point and did not see any warnings about cubic coefficients this time. Matcont did not detect any codimension-2 bifurcation this time, although it was detecting a generalized period doubling bifurcation earlier. You also mentioned that I should check...

Dear Hil, Thank you for your help. I am working on Hodgkin-Huxley type equations. It is stiff. I tried 2 parameter continuation from various PD points and observed a similar pattern. The system would detect lot of generalized period doubling points, but with a warning that the cubic coefficient of the normal form is not zero. Also, the computations take lot of time when I do 2 parameter continuation from a PD point. I will increase the accuracy and try the continuations again. Thank you, Parul

Hello, MATCONT detected several period doubling bifurcations for my system of equations. However, all of them have extremely small normal form coefficients (of the order of 10^-10 and 10^-9). Are these reliable? What is the implication of having such small normal form coefficients? Thanks and Regards, Parul

Hi, I have the same problem. I have a system of 9 ODEs. Was this problem solved? Regards, Parul

Hello, I am also facing matplotlib related errors. When I try using PyPlaut, I get the following: Traceback (most recent call last): File "/home/parul/Software/AutoForLinux/auto/07p/python/graphics/pyplaut.py", line 605, in <module> runner = PyPlautInteractiveConsole(exportFunctions(), b, s) File "/home/parul/Software/AutoForLinux/auto/07p/python/graphics/pyplaut.py", line 82, in __init__ self.handle.config(**dict) File "/home/parul/Software/AutoForLinux/auto/07p/python/graphics/windowPlotter.py",...

I think you need to source auto.env.sh first, so that the path to AUTO is added in your bash profile.