I was trying to make sin wave of the type
f(x) = A*sin(2*pi*f*x + phi)
Where A is amplitude, f is frequency and phi is phase angle. I know to plot simple sin curve like this :
def plot(self):
Amplitude = 1.5
Frequency = 0.5
Phase = 2.6
ax = self.figure.add_subplot(111)
X = np.linspace(-np.pi, np.pi, 256,endpoint=True)
S = np.sin(X)
ax.hold(True)
ax.plot(X, S, color="blue", linewidth=1.0, linestyle="-")
xlim(0.0,2.0)
xticks(np.linspace(0,2,5,endpoint=True))
ylim(-1.5,1.5)
yticks(np.linspace(-1.5,1.5,7,endpoint=True))
self.canvas.draw()
I am drawing it using QtGui. Please help me find correct way to plot this sine wave.
I have an idea that I need to modify these two lines :
X = np.linspace(-np.pi, np.pi, 256,endpoint=True)
S = np.sin(X)
My Try :
def plot(self):
Amplitude = 1.5
Frequency = 0.5
Phase = 2.6
fs = 44100
T = np.arange(-0.002, .002, 1.0/fs)
ax = self.figure.add_subplot(111)
X = Amplitude*np.sin(2*np.pi*Frequency*T + Phase)
ax.hold(True)
ax.plot(T, X, color="blue", linewidth=1.0, linestyle="-")
xlim(0.0,2.0)
xticks(np.linspace(0,2,5,endpoint=True))
ylim(-1.5,1.5)
yticks(np.linspace(-1.5,1.5,7,endpoint=True))
self.canvas.draw()
But nothing is displayed as sine wave now . Please help me find error.
Along X axis it lie from 0 to 2 like this 0,0.5,1.0,1.5,2.0
Along Y axis it lie from -1.5 to 1.5 like this -1.5,-1.0,-0.5,0.0,0.5,1.0,1.5
