I was trying to see the seasonal and trend factor in the timeseries, but graph is not working correctly. Tried after deleting cache memory too

Question

Hi was trying to do seasonal_decomposition for a time series, but wasn't getting proper result:

date        value
2020-02-01  67.05
2020-03-01  69.08
2020-06-01  70.25
2020-07-01  68.74
2020-08-01  67.31
.
.
.
till 2022-11-04

Code:

from statsmodels.tsa.seasonal import seasonal_decompose
df_add_decompose = seasonal_decompose(df_modified, model = 'additive', period=12)
df_add_decompose.plot()

Answer 1

you have to sort index:

from statsmodels.tsa.seasonal import seasonal_decompose
df_modified = df_modified.sort_index()
df_add_decompose = seasonal_decompose(df_modified, model = 'additive', period=12)
df_add_decompose.plot()