i'm trying to build a counter which would detect number of oscillations in a given data i'm following a method where the slope of each point is calculated and based on negative and positive direction change is there a preexisting function for this i'm using the following code and i'm unable to leave out the cells with zero values after taking difference between each cell
import pandas as pd
import xlsxwriter
from asammdf import MDF
import numpy as np
dat = MDF("file_name.dat")
app = dat.get('variabe_name')
df = pd.DataFrame(app)
print(df)
data = df.loc[0, 0:]
#time step = T
T = 0.01
# Number of sample points
N = len(data)
# sample spacing
x = np.linspace(0.0, N*T, N, endpoint=False)
x1 = data.diff()
print(x1)
df1_1 = pd.DataFrame([x1])
df1_1 = df1_1.replace(0, np.nan)
df1_1 = df1_1.dropna(how='all', axis=0)
df1_1 = df1_1.dropna()
df1 = pd.DataFrame.transpose(df1_1)
df1.to_csv("output.csv")'
my data looks like this
