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Christoph_J

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1502.63 (340,449th) 		Reputation
4,006 (41,864th)
Page: 1
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How to insert entries from a user perspective 0.00
VBA - Autofilter increases sheet size substantially 0.00
Is it possible to pass samples of unequal size to function boot in R -4.01
R: operate over subset of columns in data.table -4.28
How to compute variables for each subject in a dataset +0.45
How can a start date be used to create lagged end dates in R? 0.00
Number of Unique Obs by Variable in a Data Table -3.14
Lists to Dataframes with NA or 0 +3.45
Pivot a large data.table -1.62
identify the last `letter` within `ID` in a longitudinal data set -2.41
How to drop columns by name pattern in R? +4.00
Why can't I use aggregate with cbind on a range of columns in a dat... +4.51
fit an xtable to a pdf file +4.09
Nested if else statements over a number of columns -1.01
Rolling regression return multiple objects 0.00
How do I rename a data-frame in a for-loop 0.00
Displaying <<..>>= in output +4.66
Calculating days per month between interval of two dates -2.84
extracting segments of a data.table -3.28
aggregating multiple columns in data.table -4.14
R data.table grouping for lagged regression +3.95
How can I create new data frame columns corresponding to levels of... +3.55
creating new dataframe with matching ids in two different table tha... 0.00
Refer to columns by number in := assignment when using data.table +1.81
data.table efficient alternative to grouped assignment as DT[ ,x:=f... -1.98
Select a value for based on a highest value in another column -1.17
Converting time interval in R -0.07
Panel data regression: Robust standard errors 0.00
How would you translate this into data.table package language in R? -2.02
Slow loop in R, any suggestion to speed it up? +2.92
How can I subset the negation of a key value using R's data.table p... -3.84
Create an data.frame in R with dynamically assigned column names +3.96
Row wise matrix operations in R 0.00
How to resolve dcast error with reshape2 package in R? 0.00
regression on subsets for unique factor combinations using lm 0.00
R terminates with error message: This application has requested the... 0.00
Loop through columns in a data.table and transform those columns -2.86
faster way to create variable that aggregates a column by id +3.94
Proper/fastest way to reshape a data.table 0.00
Merging tables that are sorted differently with R 0.00
dates ggplot issue 0.00