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Rating Stats for

chinsoon12

Rating
1493.44 (4,328,249th)

Reputation
9,481 (16,227th)

Page: 1 2 3 4 5 6 7 ... 22

Title	Δ
data.table merge with no obvious / unique join key	0.00
R data.table: detect pattern of values within each group	-0.44
Casting data.table with conditions	-1.47
efficient cumsum problem and can't go below zero	0.00
Calculate Euclidean distance between points with rolling function i...	0.00
return most occurring character value in r	-0.80
Solving system of 4 equations in 4 unknowns using R	-0.45
Ordering rows in a data.table in a specific order	0.00
partial rolling sum in data.table in r	+0.55
Replacing NA values by nearest value and factor	+2.24
Rotate a dataframe with header	-0.30
Conditionally determining value of column by looking at last group	-1.42
R: Count number of days before specific date by ID	-1.43
Dynamic creation of data.frame / data.table / tibble	0.00
condition by oldest date and id in r	-1.48
Matching rows to columns and counting same occurences R	-0.45
How to substitute dataframe values matching on ID and performing di...	0.00
R work out total days in array with gaps/overlaps between dates	-1.41
dividing the values of data.table1 by data.table2 in R	+0.54
Generate random numbers for groups R	-0.46
Adding numeric vectors of unequal length in a list together with an...	-0.87
Given how long many things were each running for; calculating the t...	+2.77
Non-equi join of data table operation	+0.46
Using data.table to assign the best of response in r	+0.79
Conditional row wise aggregation using "or" in data.table	0.00
Merge nearest preceding date and between dates	-1.18
Alternative to cut function in R for data.tables - integer variable...	-0.44
R Data.Table Solution for DPLYR Resolution	-1.38
R DataTable Recode Many Variables	-0.29
Make Variable With Number of Unique Case by a Grouping Var	-1.41
How to avoid this for loop in r	0.00
R - how to speed a for loop with vectorised operations. Pratical pr...	+1.24
R loop to standardize variables using data.table	-0.20
R: ranking variable per trial according to time column	-1.88
Spread unique values (in multiple columns) to different columns and...	-1.29
group by on a particular column and select even rows for each group...	0.00
How to apply a function inside a nested vector in data.table?	0.00
convert character month to integer in R by data table with missing...	0.00
Intersection of items between groups in a data.table	-1.39
R Why dplyr counts unique values (n_distinct) by groups faster than...	0.00
Compute mean difference between dates based on a condition in R	-1.18
How to efficiently replace first row's NA with 0 by group with R	-1.44
Dynamically subset and mutate data.table?	0.00
R - join data tables by pairs of keys	0.00
Calculating distance in months between two occurrences in a data set	0.00
R: How to the compute the maximum of a column's lead next few r...	0.00
R: How to summarize a data.table in long format using the colum nam...	+0.54
How to apply different functions with different argument types to c...	+1.95
Count consecutive prior dates per group	-1.45
R // count rows and sum col value if multiple conditions in other c...	-1.98