rdata.table-CodePudding

Tags > rdata.table

11-10EnterpriseRow-wise calculations in data.table long data format
11-10EnterpriseApplying a match within a function for a data.table
02-03databaseHow to create new variables and assign column names in an efficient way using data.table?
02-03Software engineeringDelete duplicates across rows data.table
02-03Software engineeringHow can I dynamically assign variable names within a function in data.table in R?
02-02BlockchainCreating unique id if the difference between dates is more than 7 in R
01-31NetFlagging the first row by group in data.table
01-31NetConditional lag with dates in R - how to code skip to next date if dates are the same?
01-30Software designExtract columns using a character variable in both data frames and data tables
01-29OSRemove all rows from data.table if there is any infinite value
01-28Software engineeringIn base or data.table for R, use a function, evaluated on a column, to select rows?
01-26NetUser-defined function that will rename a variable in a named column in R
01-20Software engineeringR Data Table add rows to each group if not existing
01-19databaseR data.table add column from a lookup using a date non-equi join with a lookup data.table
01-17Mobilelapply using colnames with data.table
01-17MobileR subset a data.table only criteria is met, by group
01-13databaseOptimize steps extend sequence date, intersect and compute by group with data.table
01-03BlockchainRemove data.table rows whose vector elements contain nested NAs
12-31NetDuplicated not returning expected result
12-29EnterpriseHow to create a new variable name with a pre-defined prefix in a function
12-26OSfunction in R that creates a new column in a data.table, whose i-th row is the sum of product of two
12-21EnterpriseR data.table join with concatenation of rows for a column
12-17OSR - How to perform list-column operations in data.table
12-16Back-endShow selected/all columns when joining in data.table
12-15Back-endHow to use data.table to apply function to huge dataset (390 rows and 280976 cols)?
12-14MobilePick selected elements from long strings in a data.table cell without using a loop
12-13BlockchainUse several columns values as input to a function to compute new column in data.table
12-09OSfast counting of appearences in R data.table
12-09OSEffective appending data to existing data.table by joining and coalescing
12-09otherfiltering specific time for each date in data table in r
11-29OSHow to merge two data frame on the closest value, but also by group in R?
11-28NetAdding column sums to a data.table as a new row at the end
11-24Software engineeringreplace missing values with other data based on conditions in data table
11-22NetMake a new column based on conditions, data.table R
11-21otherHow to filter and subset data by group using data.table?
11-13Software designr data.table dcast error message is unclear
11-09Software engineeringGet codes for lowered forms in the same data.table: Faster implementation wanted
11-09Software engineeringsum values of a joined table between two dates with data table
11-08Software designAdding a countdown to data.table
11-08otherAdding a column with exact matches from a list

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