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Dunnomuch
Dunnomuch
Last Activity: May 17 '10, 07:28 AM
Joined: May 10 '10
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  • Dunnomuch
    replied to Plotting a matrix
    in Python
    Hi,

    The matrix I mean looks like this:

    Code:
    class Matrix(object): 
    def __init__(self, kolommen, rijen): 
        self.kolommen = kolommen 
        self.rijen = rijen 
        # Creeer matrix met nullen
        self.matrix = [] 
        for i in range(rijen): 
            ea_rijen = [] 
            for j in range(kolommen): 
                ea_rijen.append(0)
    ...
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    • Dunnomuch
      started a topic Plotting a matrix
      in Python

      Plotting a matrix

      Hi,

      I've got a little problem in plotting a matrix that is build up in a class. Cause I've build it up in a class, I can't just plot the different arrays out of which it would consist when you build it up like this:
      [[...],[...], ... , [...]]

      I've tried to plot it by making a loop that consistently plots the rows which have f1, f2 and t in it (Respectively being the first function, the second function and the...
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      • Dunnomuch
        replied to Forward Euler method for N-dimensional ODE
        in Python
        I'm a little confused... You don't seem to use the Forward Euler methode...?
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        • Dunnomuch
          replied to Forward Euler method for N-dimensional ODE
          in Python
          N-dimensional step

          An N-dimensional ODE has N equasions:
          df1/dt = f1(x1, x2, x3, ..., xN, t)
          df2/dt = f2(x1, x2, x3, ..., xN, t)
          ...
          dfn/dt = fn(x1, x2, x3, ..., xN, t)

          The solution should be N different functions and those should come in the matrix. Afterwards, it should be possible to plot those N functions. But don't get me wrong: We won't really find functions, but functionvalues in a certain interval [0, T]....
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          • Dunnomuch
            started a topic Forward Euler method for N-dimensional ODE
            in Python

            Forward Euler method for N-dimensional ODE

            Hi,

            I'm trying to come up with a FWE method for an N-dimansional ODE. So far, I was able to turn the one dimensional solution into a two dimensional one:

            Code:
            from scitools.std import *
import numpy as numpy
v0=0
K=3 
n=10
dt=0.1
t0=0

def f1(u1, u2, u3, t):
    return u1

def f2(u1, u2, u3, t):
    return u2

def f3(u1,
            ...
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            Last edited by Dunnomuch; May 10 '10, 10:17 AM. Reason: faulth in syntax
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