Python's $\tt resample$ vs $\tt resample\_poly$ vs $\tt decimate$

1. Why resample () is used in time series analysis?
2. What is time resampling?
3. What is resample signal?
4. Is resampling the same as interpolation?

Why resample () is used in time series analysis?

Resampling can also provide a different perception of looking at the data, in other words, it can add additional insights about the data based on the resampling frequency. resample() function: It is a primarily used for time series data.

What is time resampling?

Resampling is used in time series data. This is a convenience method for frequency conversion and resampling of time series data. Although it works on the condition that objects must have a datetime-like index for example, DatetimeIndex, PeriodIndex, or TimedeltaIndex.

What is resample signal?

Resampling is the process of changing the sampling rate of an existing signal. A new signal should keep all information contained in the original signal.

Is resampling the same as interpolation?

Resampling is used to either increase the sample rate (make the image larger) or decrease it (make the image smaller). Interpolation is the process of calculating values between sample points. So, if you resample an image you can use interpolation to do it.