Hi All, I don't know how many people have used waterfall_sink_c, but when I used it I noticed that the spectrum was split up at 0. | + ++ +++ | --- -- - | instead of | --- -- - 0 + ++ +++ | which is how fft_sink_c displays it.
I made the changes below to correct this. I have
attached a corrected version of waterfallsink.py for
convenience.
James
if self.fftsink.input_is_real: # only plot
1/2 the points
d_max = L/2
p_width = 2
else:
d_max = L/2
p_width = 1
if self.fftsink.input_is_real: # real fft
for x_pos in range(0, d_max):
value = int(dB[x_pos] * 5.0) #adjust
constant here for gain control
if value > 255:
value = 255
elif value < 0:
value = 0
dc1.SetPen(self.pens[value])
dc1.DrawRectangle(x_pos*p_width, 0,
p_width, 1)
else: # complex
fft
for x_pos in range(0, d_max):
value = int(dB[x_pos] * 5.0) #adjust
constant here for gain control
if value > 255:
value = 255
elif value < 0:
value = 0
dc1.SetPen(self.pens[value])
dc1.DrawRectangle(x_pos*p_width +
d_max, 0, p_width, 1)
for x_pos in range(0 , d_max):
value = int(dB[x_pos+d_max] * 5.0)
#adjust constant here for gain control
if value > 255:
value = 255
elif value < 0:
value = 0
dc1.SetPen(self.pens[value])
dc1.DrawRectangle(x_pos*p_width, 0,
p_width, 1)
self.DoDrawing (None)
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waterfallsink.py
Description: 2136063517-waterfallsink.py
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