1,434 reputation
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location Greece
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visits member for 2 years, 1 month
seen 7 hours ago

Jan
22
accepted Correcting a gap in ListPlot
Jan
22
comment Correcting a gap in ListPlot
Thanks! It works fine. I provided here a small sample of my data and that's why my code (not cold!!!) does not produce the same plot.
Jan
22
asked Correcting a gap in ListPlot
Jan
20
revised NDSolve not able to solve a system of differential equations
edited title
Jan
20
awarded  Tumbleweed
Jan
19
comment NDSolve not able to solve a system of differential equations
D0 you mean that data0 is not empty? If not, can you please make a quick ListPlot of the elements of the list?
Jan
19
asked NDSolve not able to solve a system of differential equations
Jan
17
accepted How to create a custom filling with ListPlot
Jan
17
comment How to create a custom filling with ListPlot
The line between the two areas is not visible any more
Jan
17
asked How to create a custom filling with ListPlot
Jan
13
asked Locating Periodic Orbits - Part II
Jan
13
comment Locating Periodic Orbits
UPDATE: Your module works but it does not hold the energy constant. I took the computed x00 and uy0 and inserted them into the Hamiltonian like H00 = H /. {x[t] -> x00, y[t] -> 0, ux[t] -> 0, uy[t] -> uy0}. The value is H00 = -873.553 not -900 as it should be. So yes the code computes a periodic orbit but not for the desired energy level. How can this be fixed?
Jan
12
comment Locating Periodic Orbits
Please see my EDIT. I cannot figure out how exactly your module map works but it seems that something is wrong. Does your module keep the energy fixed at -900? Anyway, why for a = 3 the reported x0 is not the periodic point? Please be so king and take a look at this.
Jan
12
revised Locating Periodic Orbits
added 596 characters in body
Jan
10
comment Locating Periodic Orbits
The numerical method you proposed works perfectly. Now is it possible to create a DO loop for computing the periodic point for variable a let's say when a is between 1 and 9. In other words create a list containing three columns a, x0, tper.
Jan
9
accepted Compute the evolution of percentages from a data file
Jan
9
comment Compute the evolution of percentages from a data file
Many many thanks!
Jan
9
comment Compute the evolution of percentages from a data file
I think this is exactly what I what. Just a minor comment. Now the percentage is expressed in decimal between [0, 1]. How can I change it to % between [0, 100]?
Jan
9
revised Compute the evolution of percentages from a data file
added 2363 characters in body
Jan
9
asked Compute the evolution of percentages from a data file