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Joshua Ulrich

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1638.69 (725th) 		Reputation
144,356 (398th)
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Title Δ
How can I find out all the methods defined for a class in R? +0.38
Obtain elements from a list with a for loop -0.11
for loop not working in R -0.12
How to vectorize: set a value based on last time a binary vector w... -0.33
How to split a data frame and extract a particular pattern? 0.00
special vector addition in R -1.05
R CMD check and .RDa Data files 0.00
Monkey patching R language base functions with big data functions f... 0.00
iteration over a factor extracting specific elements 0.00
How to speed up summarise and ddply? -0.62
install RQuantLib on Microsoft Windows 0.00
How to partition a vector into groups of neighbors in R? +0.39
Creating a new data frame in R from an exisiting, inadequate data f... -0.11
transform vector into list 0.00
for loop specific elements of a vector in R +0.95
How to access global workspace objects when sourcing R script, that... 0.00
Basic question on how to get next/previous element in xts -0.42
R: converting each row of a data frame into a list item +0.39
How to use R packages MACD functions? 0.00
joining aggregate info back to a data frame... in an R way -0.54
How to rewrite this Stata code in R? -1.33
R: Loading someone else's .rdata file, can't access the data +0.37
Count how many consecutive values are true -0.26
How to identify multiple identical pairs in two vectors -0.11
Frustration using rJava to call a third party Java jar 0.00
How to disable "Save workspace image?" prompt in R? +0.39
R Plotting - groups of lines with known colors +0.35
R: Best way to convert a mts to a non-time series dataframe with ti... -0.60
R: specifying a string as an argument of a function that calls anot... +0.81
How do I add a row to a data frame with totals? +0.02
timeSeries align not finishing its job 0.00
Vector of logicals based on row membership +0.47
Only Selecting Cases for all Time Periods +0.08
Line plot in r ignoring missing data +0.38
loop to create several matrix in R (maybe using paste) +0.39
R: Masked Functions +0.68
How to compute weighted means of a vector within factor levels? +0.37
Reverting to Factor Codes R -1.08
How to iterate over file names in a R script? +0.20
R: Technical analysis annual results 0.00
It seems that there is a weird Segmentation Fault when using R POSI... -0.13
Dealing with dates and times in R +0.39
R command line passing a filename to script in arguments (Windows) +1.77
Quick question about subsetting via character-class +0.95
matrix flow: to the right instead of downwards? +0.13
R - How to draw an empty plot? +0.38
showing a status message in R +0.05
How to obtain a list of directories within a directory, like list.f... +1.23
How do I install an R package from the source tarball on windows? +0.40
calculate average over multiple data frames +0.61