data-manipulation

data-manipulation

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Pad the missing data with NA for two matrices
cliu0
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1
2
34
missing-data data-manipulation matrix r
Alternate Methods For Working with ZST Files in R?
stats_noob0
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0
0
17
data-manipulation r
Pad missing data in a matrix with NA based on another matrix
cliu0
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1
1
21
missing-data data-manipulation matrix r
How to assign a dummy variable if any value in column A is bigger than column B in R, after a certain point in the panel?
userofkb10
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1
1
28
data-cleaning data-manipulation dplyr r
Extremely slow calculations in SPARK (using sparklyr)
mabramov0
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0
0
18
sparklyr data-manipulation r
How to add a time duration variable in r?
useru6Ff10
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0
2
56
data-wrangling data-manipulation tidyverse dplyr r
Replace all keys and manipulate values in a python dict and construct a new dict in a list
johnoula0
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0
1
34
data-manipulation data-structures dictionary python
Is there a Python function for repeating a string if the string contains a key substring?
Ryguy2660
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-1
2
36
data-manipulation dataframe python
Is there a Python function for counting the number of strings in a cell and reporting these in a new dataframe?
Ryguy2660
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1
1
36
data-manipulation function dataframe pandas python
Extract string inside specific pattern [...] in R
user150328390
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1
3
43
data-manipulation dataframe r regex
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