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Matt Dowle

Rating
1609.58 (1,416th) 		Reputation
48,330 (2,110th)
Page: 1 2 3 4 ... 7
Title Δ
R fread data.table inconsistent speed 0.00
How do you extract a few random rows from a data.table on the fly +0.38
How do I evaluate columns inside data.table with different conditions -0.24
How to replace first n1 and last n2 rows with NA in specific columns 0.00
data.table throws "object not found" error 0.00
fread error "unexpected character ending field" 0.00
Reason behind speed of fread in data.table package in R 0.00
data.table function works in script but not in package 0.00
fread and column with a trailing backslash 0.00
fread() error and strange behaviour when reading csv 0.00
How can I compute statistics by decile groups in data.table 0.00
Using lists inside data.table columns +0.28
Subsetting a data.table by range making use of binary search 0.00
Large integers in data.table. Grouping results different in 1.9.2 c... 0.00
About GForce in data.table 1.9.2 0.00
How to avoid weird umlaute error when using data.table 0.00
skip and autostart in fread 0.00
data.table roll="nearest" returns multiple results +0.35
Data Table - Select Value of Column by Name From Another Column -1.39
Profiling data.table's setkey operation with Rprof +0.28
When using :=, why is with=TRUE the default? 0.00
append multiple large data.table's; custom data coercion using colC... 0.00
Why is the key dropped when a key column is updated? 0.00
Why does fread read URLs ok on Linux but not on Windows? 0.00
data.table column deletion speed -0.13
fread segfault on sparse 132MB file with 613 columns of survey data 0.00
fread doesn't like lines with less fields than other lines 0.00
Assigning a data.table slice in R 0.00
rbind `data.tables` and preserve key 0.00
data.table and error handling using try statement +2.07
Filter data.table by multiple columns, dynamically +1.68
data.table operations by column name +0.71
fread segfault with 30GB space separated file with some rows starti... 0.00
fread and a quoted multi-line column value 0.00
Complicated summary function -- is it possible to solve with R data... +1.78
Ignore safety check when using setnames +0.37
Warning: 'Invalid .internal.selfref detected' when adding a column... -0.29
`j` doesn't evaluate to the same number of columns for each group +0.46
Avoiding eval(parse(text)) When Operating On Similarly Named Columns +0.47
element-by-element multiplication within a data table - Multiple va... +0.26
roll data.table with rollends 0.00
Perform a semi-join with data.table +0.10
fread data.table in R 0.00
Installing new version of data.table (specifically 1.8.11 from Rfor... 0.00
datatable.integer64 argument is not working for me should it? 0.00
transpose-like procedure in data.table 0.00
using colClasses in fread 0.00
R data.table count panel data 0.00
Fill option for fread 0.00
fread (data.table) locks files 0.00