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Questions - interpolation

Interpolating to minute granularity using pandas groupby and interpolate

I have a dataframe looking like the dataframe dogdata below, and I'd like to groupby location and type and linearly interpolate size by a minute datetime resolution dogdata.set_index('datetime').group...
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berr9

python

pandas

datetime

pandas-groupby

interpolation

Votes: 0

Answers: 1

Latest Answer

First, convert string to datetime using pd.to_datetime() and set it as index. Next, resample the data using asfreq() to a 60 sec frequency and fill the missing values using ffill(). import pandas as p...
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KarelZe

How to use pandas resample using 'day of year' data (Python)

My pandas array looks like this... DOY Value 0 5 5118 1 10 5098 2 15 5153 I've been trying to resample my data and fill in the gaps using pandas resample function. My worry is th...
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Jack Cahill

python

pandas

interpolation

resampling

Votes: 0

Answers: 2

Latest Answer

Convert to_datetime, perform the resample and then drop the unwanted column: df["date"] = pd.to_datetime(df["DOY"].astype(str),format="%j") output = df.resample("D&q...
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not_speshal

Interpolation value can't be multiplied, show Nonetype

I have a written a interpolation function. but when I called the function, it works perfectly. but when the obtained value is multiplied, it shows TypeError: unsupported operand type(s) for *: 'NoneTy...
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Habiba Akter

python

scipy

interpolation

nonetype

Votes: 0

Answers: 1

Latest Answer

The error arises because your function does not return anything. Add return r to the end of the function. Otherwise, the value of p will be None and the error arises from multiplying p (which is None,...
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Ganesh Tata

Smoothing spline with continuous 4th and 5th order derivatives in Python?

I have some noisy time series that represent input parameters as a function of time for a set of ODEs. These noisy time series need to be interpolated and the derivatives of that interpolation functio...
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quantumflash

python

interpolation

differential-equations

spline

smoothing

Votes: 0

Answers: 1

Latest Answer

I don't think this is a valid way to check whether a function is continuous at the fifth derivative. I think the timestep is so small that the plots of the fourth and fifth derivatives are getting ove...
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Nick ODell

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