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Shenglin Chen

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1418.52 (4,535,890th) 		Reputation
3,802 (44,150th)
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Title Δ
format and informat in sas +2.34
Replace a random block of characters in a string in R -1.69
Replicating random normal generated in SAS (rancor) in R, based on... -3.06
Extract ID's separated by dashes from text string -1.90
Categorize one table based on contents of a column in another table -3.65
Regex finding more than one time pattens in string with R -2.99
Difference between SUM statement and sum variable in SAS? -0.92
How to perl regex match in R in the grepl function? -2.54
Substring and gsub in R +5.53
SAS MACRO Looping -1.48
SAS Find Top Combinations in Dataset +4.19
Build and use incremental hash variable in SAS -3.17
Match last values of different variables from a table -1.41
Count number of 0 values -1.84
R: Adding two dataframes (different number of rows) -3.27
Infinite Loop while using Do while in SAS -3.34
R data.table get unique rows droping some columns as well -3.76
R Transformation Collapsing Rows -1.20
R remove character -4.14
How to match data in SAS -3.97
sas conditional sum into new field -2.66
R !Duplicate by Factor Level +0.12
How to extract substring of input? +3.44
Removing character from regexp class in R -3.00
Row to column transformation of the string in R 0.00
Extracting text after "?" in R +2.63
Selecting elements from Data Frame which meet an if condition insid... +2.76
convert names to character strings +0.19
Trying to avoid for loop with sapply (for gsub) -1.86
Summing sections of dataframe in R -2.68
SAS: select groups of observations based on values in two columns a... +4.17
How to aggregate data.table on multiple dimensoins -2.30
pass variable value to array +4.20
Extracting a specific format substring (ID, code) from a string usi... -1.89
Colmeans in a dataframe by factor variable +3.89
R dplyr rolling sum -2.73
PROC SQL - Counting distinct values across variables +4.02
Remove characters from string based on relative position to specifi... -3.23
Change a number to a word in only 1 column +4.55
Remove first occurrence of a number from a list -2.88
How to get a variable's name based on its value +4.14
SAS Proc Logistic Selection=Score +0.21
counting different length substrings of consecutive characters in R +1.32
R dplyr summarise one column value based on index of fun(another co... -2.72
Values in a column that are in a % -3.50
why macro is creating Leading space while resolving macro in sas? -4.03
aggregate by column value and paste row values together in SAS -3.53
How to filter columns in SAS 0.00
PICTURE statement using custom format -3.58