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New posts in dataframe
How to aggregate a subset of rows in and append to a MultiIndexed Pandas DataFrame?
Sep 20, 2025
python
pandas
dataframe
multi-index
Quick way to select rows with matching terms in a list in data frame
Sep 20, 2025
r
list
dataframe
Combinations of rows, where values in columns aren't repeated
Sep 20, 2025
r
dataframe
combinations
Extracting Data from .csv File in Julia
Sep 19, 2025
pandas
dataframe
julia
dataframes.jl
for multiple columns in data frame reshaping from wide to long in R
Sep 19, 2025
r
dataframe
reshape
"Indexing" a price series to a starting time point (index level = 100) with pandas data frame : P(i,t) / P(i)
Sep 20, 2025
pandas
dataframe
arithmetic-expressions
scalar
Python: remove rows with max value in each group
Sep 20, 2025
python
pandas
dataframe
indexing
pandas-groupby
Save dataframe as CSV in Python
Sep 19, 2025
python
pandas
dataframe
dictionary
ValueError: Must specify a fill 'value' or 'method'
Sep 18, 2025
python
pandas
dataframe
Reverse the order of some data frame columns
Sep 20, 2025
r
dataframe
apply
Pandas - groupby and show aggregate on all "levels"
Sep 18, 2025
python
python-3.x
pandas
dataframe
Dataframe manipulation: "explode rows" on new dataframe with repeated indices
Sep 17, 2025
python
pandas
dataframe
Split up dataframe into list of dataframes based on breaks in one column
Sep 19, 2025
r
dataframe
sorting
lapply
Sort a subset of columns of a pandas dataframe alphabetically by column name
Sep 19, 2025
python
pandas
dataframe
R: Filtering out non numerical values in dataframe
Sep 19, 2025
r
csv
dataframe
Create a single-column from a pandas data frame with n columns
Sep 19, 2025
python
pandas
dataframe
csv
ValueError: Unknown engine: openpyxl when trying to load Excel file to a dataframe on a Jupyternotebook
Sep 18, 2025
python
pandas
dataframe
jupyter-notebook
openpyxl
R merge two dataframes by closest date [duplicate]
Sep 19, 2025
r
dataframe
dplyr
merge
Dataframe list comprehension "zip(...)": loop through chosen df columns efficiently with just a list of column name strings
Sep 19, 2025
python
pandas
dataframe
zip
list-comprehension
How to delete a particular value from the whole dataframe in R? [duplicate]
Sep 19, 2025
r
dataframe
remove-if
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