class frequencer[source]

frequencer(x, y, interval)

Read our data, every column in this .csv file represents a random oscillations with a step in the middle.

freqs = pd.read_csv(r'test_freqfile/test_oscillations.csv')

Let's create object of our frequencer class from column with random oscillations.

We will pass the values for x and y and the interval between each point.

test3 = frequencer(freqs.index, freqs.iloc[:,2], 0.05)

Now we can plot our test fluctuation with plot method.

test3.plot()

Let's measure frequency of oscillations with autocorr_freq method. It prints frequency value, plots chosen section of oscillations and autocorrelation plot.

test3.autocorr_freq(section=(0,7))

Frequency is: ~1.951 Hz

Also we can find step with find_step method, if any. It prints index of step value and plots graph with convolution function.

test3.find_step()

638

Some tests:

assert test3.find_step(plot=False) == 638