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Joshua Ulrich

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1638.69 (725th) 		Reputation
144,356 (398th)
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R Error with ADF test in Time Series Lapply 0.00
how do you convert time stamp that has AM/PM at the end of the string 0.00
How can I write a comma between each value of a vector? +1.91
R: apply on all matrix elements +0.76
Error when using %dopar% instead of %do% in R (package doParallel) +0.32
Why does "hello" > 0 return TRUE? 0.00
Fetching date/time from string in R -0.36
Non-comformable arrays error when using xts series in a logistic re... 0.00
How to change the date format from yearmon to yyyy-mm-dd? -1.13
Unix-only package error in R -0.68
scale columns of an xts object -1.36
Remove all dots but the first in a charchter string 0.00
How to filter days that are illiquid 0.00
Subtracting a xts object from a subset of xts object 0.00
NA, TRUE and FALSE properties -2.21
R Search for a particular time from index +0.32
Convert date/time from human readable format +0.32
How to plot different class of time series data into one panel? +1.13
R's Format function returning an odd result -1.40
why is chart.CumReturns diff to cumsum? 0.00
issues when trying to make indices unique in xts -0.18
mean and sd of the day in R with xts -0.19
To create a regular time series 0.00
plotting xts objects - passsing values for lwd and col parameters c... 0.00
Is there a limit on the number of slaves that R snow can create? 0.00
Possible bug: setting colnames of an xts object in the last line of... 0.00
adf.test returning p > 0.99 with xts, but returning p < 0.01... 0.00
From MMDD to day of the year in R -0.14
dailyReturn with xts object -0.40
na.omit returns a empty object 0.00
From daily time series to weekly time series in R xts object 0.00
Problems formatting date into format "%Y-%m" 0.00
Rolling frequency of irreqular tick-data xts timeseries +0.31
R diff function on large dataset -2.07
Lag with missing data 0.00
Transforming a long date string to a Date in R +0.32
How can I extract the sub-second part of the index from POSIXlt? 0.00
Subsetting an xts object containing logical values in the first col... 0.00
rollapply outputing two or more columns +1.26
Converting CSV file to xts 0.00
get first and last day of each week using xts in R +1.35
double timestamp in dataframe merge 0.00
How can I create a vector containing the days of the week? +0.59
Moving average of previous three values in R 0.00
How to generate regular xts periods from random time observations? 0.00
Time series plot range 0.00
How to generate sample data with exact moments +1.44
Dictionaries and pairs in R -0.30
Unexpected behavior using -which() in R when the search term is not... -2.09
Data frames with mixed data types 0.00