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Shenglin Chen

Rating
1418.52 (4,535,890th) 		Reputation
3,802 (44,150th)
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Title Δ
Resolve Macro Variable in SAS +4.46
Inserting delimiter before nth uppercase letter in R string -1.05
SAS not recognizing date format +0.78
String split with conditions in R +1.44
Creating data output using a macro do loop in SAS -2.90
R: regular expression lookaround(s) to grab whats between two patte... -2.62
Proc datasets modify several datasets in single step +4.70
Keep reading input from next row in the same variable -0.13
selective removal of characters following a pattern using R -3.06
Creating a date exactly one month in the past in SAS -3.19
R - grep function not matching properly 0.00
One row w/ multiple columns to multiple ordered rows 0.00
Loop through a data frame that generate an output based on conditio... -2.35
Regular expression parsed with grepl replacement -2.13
SAS prxchange to add a space into a string with a special characters +0.74
How to split array of strings from two sides? -1.62
Replacing a character within a substring Inside parentheses in R -2.12
How to determine the first maximum value in a variable in R? -2.50
R: Subsetting on increasing value to max excluding the decreasing -1.60
Regex look ahead assertion -2.84
Calculate offset cumulative sum begining with 0 for each group -2.07
Do loop following filevar option in SAS -1.67
SAS - How to find the max value between 2 or 3 numbers 0.00
Detect operation on missing values during SAS datastep 0.00
arrays in sas with different dimensions +4.97
Data frame rearraging in R and dyplr (mutate) +4.54
Use perl regular expression to match a pattern that spans multiple... -2.99
Match everything but numbers regular expression -1.72
Count based on multiple grouping variables r -0.85
plot 2 variables on Y axis, using ggvis in R -2.03
Regex expression to exclude hyphenated words in R +0.57
How do I eliminate rows by group? -1.52
Return most recent value using proc SQL in SAS +0.43
Lookup table with subset/grepl in R -3.42
dplyr summarize: how to include all table columns in the output table -2.78
Search for strings with apostrophes in SAS PROC SQL -3.04
Data tranfromation with if then else +0.54
How to delete adjacent rows with the same values in R? -1.67
How do I reorder variables in a Sas dataset in a specific sequence... +3.29
SAS: Looping over column names 0.00
how to use select for multiple fields using dplyr +5.72
How to subset the rows of dataset from the values of another vector... -3.56
How to change my SAS code to find the maximum number 0.00
R regex to find and replace code in rstudio 0.00
anyone knows how to get the counts of every element of a column in... +2.67
How to calculate document frequency in R? -3.32
Selecting specific elements in a vector in R +0.18
Spliting string into a list of substrings -1.95
how do you grep certain parts of a string in R -0.77
Use group_by to filter specific cases while keeping NAs -2.25