def cart():
print('Cartesian data test.')
def populate_1(func):
x = -1
while x < 1.01:
yield x, func(x) # x, y
x += 0.1
def populate_2():
x = -1
while x < 1.01:
yield x, x**2 # x, y
x += 0.1
refresh(ssd, True) # Clear any prior image
g = CartesianGraph(wri,
2,
2,
yorigin=2,
fgcolor=WHITE,
gridcolor=LIGHTGREEN) # Asymmetric y axis
curve1 = Curve(g, YELLOW,
populate_1(lambda x: x**3 + x**2 - x, )) # args demo
curve2 = Curve(g, RED, populate_2())
refresh(ssd)
def liss():
print('Lissajous figure.')
def populate():
t = -math.pi
while t <= math.pi:
yield math.sin(t), math.cos(3 * t) # x, y
t += 0.1
refresh(ssd, True) # Clear any prior image
g = CartesianGraph(wri, 2, 2, fgcolor=WHITE, gridcolor=LIGHTGREEN)
curve = Curve(g, YELLOW, populate())
refresh(ssd)
def graph():
row, col, ht, wd = 5, 140, 75, 150
def populate():
x = -0.998
while x < 1.01:
z = 6 * pi * x
y = sin(z) / z
yield x, y
x += 0.05
g = CartesianGraph(wri, row, col, height=ht, width=wd, bdcolor=False)
curve2 = Curve(g, None, populate())
Label(wri, row + ht + 5, col - 10, '-2.0 t: secs')
Label(wri, row + ht + 5, col - 8 + int(wd // 2), '0.0')
Label(wri, row + ht + 5, col - 10 + wd, '2.0')
def rt_rect():
print('Simulate realtime data acquisition of discontinuous data.')
refresh(ssd, True) # Clear any prior image
g = CartesianGraph(wri, 2, 2, fgcolor=WHITE, gridcolor=LIGHTGREEN)
curve = Curve(g, RED)
x = -1
for _ in range(40):
y = 0.1 / x if abs(x) > 0.05 else None # Discontinuity
curve.point(x, y)
utime.sleep_ms(100)
refresh(ssd)
x += 0.05
g.clear()
curve = Curve(g, YELLOW)
x = -1
for _ in range(40):
y = -0.1 / x if abs(x) > 0.05 else None # Discontinuity
curve.point(x, y)
utime.sleep_ms(100)
refresh(ssd)
x += 0.05
def lem():
print('Lemniscate of Bernoulli.')
def populate():
t = -math.pi
while t <= math.pi + 0.1:
x = 0.5 * math.sqrt(2) * math.cos(t) / (math.sin(t)**2 + 1)
y = math.sqrt(2) * math.cos(t) * math.sin(t) / (math.sin(t)**2 + 1)
yield x, y
t += 0.1
refresh(ssd, True) # Clear any prior image
Label(wri, 82, 2, 'To infinity and beyond...')
g = CartesianGraph(wri,
2,
2,
height=75,
fgcolor=WHITE,
gridcolor=LIGHTGREEN)
curve = Curve(g, YELLOW, populate())
refresh(ssd)