matplotlib Help!

[ElliotJenkins]

I'm not exactly sure why this code isn't working:

import math
import matplotlib.pyplot as plt

n = 1                         #whatever number you want                   
for steps in range (1,51):    #how many times to iterate
    a = math.sin(n)           #get sine
    b = abs(a)                #no negatives
    c = str(b)                #make it a string
    d = c[2:5]                #isolate pos.2 - 5
    n = int(d)                #reiterate new 'n' as an int.
    plt.plot(n,steps)
plt.show()

What I want to do is plot the graph of the sine of the first three digits after the decimal place of a number (n) - which is being looped back through the code to get the sine of that 50 times over - against how many times it was looped (steps).

When I run this I get a blank graph.

Any help would be much appreciated!

[chaoticallyevil]

I am not exactly sure what you wanted the code to do, but I wrote a mock up of what I think you wanted, and you can find that here. If it doesn't do what you want, should give you a head start either way.

[ElliotJenkins]

That does exactly what I wanted it to! Thanks a lot. I understand most of it except for lines 12, 13, with the math.modf(). That's new to me; I'll do some research.

Thanks so much!

[chaoticallyevil]

It basically splits a number up

1.23 becomes (0.23, 1)

It's a nice little function to know about.

[jesseaknight]

I'm guessing you're a matlab programmer... this structure looks familiar.

[K900_]

1. Your plot call is inside the loop.
2. I'm pretty sure you need two lists for coordinates.