Python

I'm having a few problems trying to write some basic coding in Python programming language.

I'm not overly computer literate when it comes to programming which is a pain in the ass, but I need to get this done for my Uni work.

What I'm trying to do is use Visual Python to plot a curve of point from an array I will gain from a different function.

Can anyone help explain how to use the visual.curve command in plain English or a basic example I can work with? Google came up with shit!

commence sage, gentlemen

I'd prefer help if I'm honest...

Post your code.

def orbit(pos,velocity,time_step,nr_steps):
    """From the given arguments (pos, velocity, time_step, nr_steps)
    the function produces a list of position vectors.
    """

    s=numpy.array([pos[0],pos[1],pos[2],velocity[0],velocity[1],velocity[2]])
   
   
    def ds_by_dt(s,t):

        x=s[0]
        y=s[1]
        z=s[2]
        x_dot=s[3]
        y_dot=s[4]
        z_dot=s[5]
       
        originalpos=([x,y,z])
       
        r=vector_length(originalpos)

        ax=(-G*m_earth*x)/r**3
        ay=(-G*m_earth*y)/r**3
        az=(-G*m_earth*z)/r**3

        x_double_dot=ax
        y_double_dot=ay
        z_double_dot=az

        return numpy.array([x_dot,y_dot,z_dot,x_double_dot,y_double_dot,z_double_dot])

    times=numpy.arange(0,nr_steps*time_step,time_step)

    initialconds=numpy.array([pos[0],pos[1],pos[2],velocity[0],velocity[1],velocity[2]])

    orbit_data=scipy.integrate.odeint(ds_by_dt,initialconds,times,rtol = 1e-12)

    return orbit_data

def plot_orbit(orbit_data):
    """This function adds the trajectory given by the orbit_data to the visual
    scene. The default colour is white, however this can be altered by entering
    a colour parameter.
    """

    a = len(orbit_data)

    positions = [orbit_data[i][0:3] for i in range(a)]

    traj = visual.curve(pos = positions, color = visual.color.white)

I've no idea if I'm even using the curve function correctly. Or if the array's in the right format =[

I mean, using the code tags.

Sorry

def orbit(pos,velocity,time_step,nr_steps):
    """From the given arguments (pos, velocity, time_step, nr_steps)
    the function produces a list of position vectors.
    """

    s=numpy.array([pos[0],pos[1],pos[2],velocity[0],velocity[1],velocity[2]])
   
   
    def ds_by_dt(s,t):

        x=s[0]
        y=s[1]
        z=s[2]
        x_dot=s[3]
        y_dot=s[4]
        z_dot=s[5]
       
        originalpos=([x,y,z])
       
        r=vector_length(originalpos)

        ax=(-G*m_earth*x)/r**3
        ay=(-G*m_earth*y)/r**3
        az=(-G*m_earth*z)/r**3

        x_double_dot=ax
        y_double_dot=ay
        z_double_dot=az

        return numpy.array([x_dot,y_dot,z_dot,x_double_dot,y_double_dot,z_double_dot])

    times=numpy.arange(0,nr_steps*time_step,time_step)

    initialconds=numpy.array([pos[0],pos[1],pos[2],velocity[0],velocity[1],velocity[2]])

    orbit_data=scipy.integrate.odeint(ds_by_dt,initialconds,times,rtol = 1e-12)

    return orbit_data

def plot_orbit(orbit_data):
    """This function adds the trajectory given by the orbit_data to the visual
    scene. The default colour is white, however this can be altered by entering
    a colour parameter.
    """

    a = len(orbit_data)

    positions = [orbit_data[i][0:3] for i in range(a)]

    traj = visual.curve(pos = positions, color = visual.color.white)

I hope that works. Otherwise how do I code tag?

I'm such a noob =[

Wow, you really can write C code in any language.

>>8
it's a way of ensuring only those of a certain iq prerequesite can read and enjoy the code

>>9
I like how you left it ambiguous whether that prerequisite is large or small.

>>10
leaving it out is a way of ensuring only those of a certain iq prerequestite can read and enjoy the comment

>>8
Well, Python is a language based on C. So you would kind of expect that...

>>12
Ruby is a langauge written in C. So you would kind of expect that...

Macintosh is an OS based on Linux.  So you would kind of expect that...

>>14
s/Linux/BSD/

I forgot that I was posting on 4chan. So I should've expected that...

>>13
Ruby is a langauge written in C.
FUCK YOU MORON
LANGUAGES ARE NOT WRITTEN IN C
PROGRAMS ARE
FUCK

>>16
You are not posting on 4chan. You are posting on /prog/.

>>17
The program to run the Ruby language is written in C.

The program to run the Ruby language
Am I still being trolled?

>>18
Which, I believe is a text board on the aforementioned '4chan'. So please be quiet. Any post on any of the boards is still technically a post on 4chan. If you don't believe me look at the URL.

>>21
Fuck the 4chan label. We were distinct and separate from 4chan when we started and we wish to be the same in spirit.

>>17
Somebody doesn't understand the concept of Turing completeness.
What is Ruby written in, if not C?

>>23
Hahaha, you must be kidding. Ruby is just too SLOW to be written in C.

>>20
Matz' Runtime Interpreter for his Ruby language is written in 'C'.  What is most lulzworthy about it is that the JRuby runtime (written in Java) is not as SLOW AS FUCK as the 'C' version it copied.

Ruby 1.8 kept the parse tree in memory and evaluated that, rather than compiling to bytecode, IIRC^{[citation needed]}. It would explain why it was SLOW AS FUCK. I don't know how Ruby 1.9 compares to JRuby though.

>>26
yeah 1,9 is like totally aewsome i hear but ive not used because soem gems i use are totally 1.8 desu desu kawaii watashi lol

From being reserved characters and BEGIN END  When I learnt?

>>28
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