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Joshua Ulrich

Rating
1638.69 (725th)
Reputation
144,356 (398th)
Page: 1 2 3 4 5 ... 35
Title Δ
Write orderbook from quantstrat into CSV file 0.00
quantmod getSymbols google duplicate bug 0.00
error using apply.yearly inside xts package. How this works? 0.00
Change String into name to access dataframe (R) -0.35
Backtesting SMA crossover in quanstrat using CSV files 0.00
R - Next highest value in a time series 0.00
Obtaining only numeric output from viewFinancials without additiona... 0.00
write array to .bin file in R 0.00
Loop too fast for read.csv -2.80
cumsum in an xts for values that already sum but reset every year 0.00
Faster way to subset xts 0.00
How to programmatically subset dates in R based on previous dates? +1.25
'Subscript out of bounds.' in period.apply -0.18
Having trouble fixing error using quantmod package in R : Error in... 0.00
DEoptim does not return optimal parameters 0.00
Extract specific stocks based on their price from Quant Mod in R 0.00
Group by period.apply() in xts 0.00
Preserve timestamp after decomposing xts in R +0.31
Merge continuous 15-min time series dataset with discontinuous 15-m... +1.62
r as.Date switching my year and month 0.00
S3 operator overloading for multiple classes +2.12
High memory consumption in unlist -1.94
Converting zoo time series from daily to monthly means 0.00
Difference in Logical Statement between [,] and $ +0.71
Fast R implementation of an Exponentially Weighted Moving Average? +1.86
vertical text for abline in xts +0.31
Reading in date from CSV into ts vector 0.00
Draw lines on chartSeries in Quantmod 0.00
R code - Use of periodReturn function (quantmod package) 0.00
R : language changes when converting ts object to xts object 0.00
convert yyyymm on factor class to character class to be used with C... +1.31
Empty output file after executing Rprof() 0.00
R - Unexpected '{' even with matched brackets? -0.16
R: closure can't find object until called 0.00
Convert vector of seconds to dates (reverse ISOdatetime) 0.00
time step from 0.1 second to half hour (30 minutes) with UTC decima... 0.00
Is it unwise to modify the class of functions in other packages? 0.00
splitting list of xts in separate objetcs 0.00
Selecting a time period with window in R; format "dd/mm/yyyy h... 0.00
Is it bad style to redefine non-S3 base functions as S3 functions i... 0.00
Why is R diff function slow? 0.00
endpoints are always in UTC/GMT 0.00
XTS time subselect across DST date Linux vs Windows 0.00
Return data from Return.cumulative vs apply.yearly returns differs? 0.00
Looping viewFinancials from quantmod 0.00
R (quantmod), plot own indicator, Error in seq.default -0.86
Error with cbind on two xts objects 0.00
Split time series data hourly in R 0.00
Limit number of Position in Quantstrat 0.00
What does builtins(internal = TRUE) return? +1.23