Sorry for the delay… need to make the graphics etc available. New users can only provide 1 graphic…
Here are excerpts from the code and 3 plots…correction 1 plot
iq = numpy.fromfile(self.hfile, dtype=self.datatype, count=self.block_length)
reals = numpy.array([r.real for r in self.iq])
imags = numpy.array([i.imag for i in self.iq])
time = numpy.array([i*(1/self.sample_rate) for i in range(len(self.reals))])
self.sp_iq = self.fig.add_subplot(2,1,1, position=[0.075, 0.14, 0.85, 0.67])
self.sp_iq.set_title(("I&Q"), fontsize=self.label_font_size, fontweight="bold")
self.sp_iq.set_xlabel("Time (s)", fontsize=self.label_font_size, fontweight="bold")
self.sp_iq.set_ylabel("Amplitude (V)", fontsize=self.label_font_size, fontweight="bold")
self.plot_iq = plot(self.time, self.reals, 'bo-', self.time, self.imags, 'ro-')
self.sp_iq.set_ylim( -2.0, 2.0)
Fig1a is the signal of interest coming into view
The program works as follows. You can call the python code with a filename. The IQ is plotted on the graph. You can use the < and > to move forward and reverse on the file to see the signal of interest.
I would like to utilize the series data to perform operations when the signal comes into view (fig1a).
I would like to look into the series data to find the start of the signal to process….much like an array.
I could use an FFT to perform this but it is expensive for the CPU. I am hoping to use matplotlib to be able to extract the signal for processing if possible.
Hope this helps.
From: Hannah via Matplotlib [mailto:firstname.lastname@example.org]
Sent: Friday, June 19, 2020 3:55 PM
Subject: [Matplotlib] [Community] Set_ylim usage/features
Hi, can you please post a sample of your image and code? It’s hard to sort out exactly what you’re asking for…is this static or interactive?
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