Stack Exchange

Aaron

Robbinsdale, MN

stat.umn.edu/~arendahl

Age: 35

I am the manager of the Statistical Consulting Clinic at the University of Minnesota School of Statistics.

top accounts reputation activity favorites subscriptions
Top Questions
Top Answers
31
R - boolean operators && and ||
stackoverflow.com

20
Reshape three column data frame to matrix
stackoverflow.com

18
R: Scatterplot with too many points
stackoverflow.com

14
Convert factor to integer
stackoverflow.com

14
Column-wise matrix normalization in R
stats.stackexchange.com

14
Is it possible to create “parallel sets” plot using R?
stats.stackexchange.com

14
Example of strong correlation coefficient with a high p value
stats.stackexchange.com

11
Dangerous for loop idiom?
stackoverflow.com

11
How R formats POSIXct with fractional seconds
stackoverflow.com

11
How to make lattice xyplot() grayscale in R?
stackoverflow.com

10
R: Masked Functions
stackoverflow.com

10
Using sample() with sample space size = 1
stackoverflow.com

10
Is it possible to update a lattice panel in R?
stackoverflow.com

10
Coercing string to int
stackoverflow.com

9
More efficient R / Sweave / TeXShop work-flow?
stackoverflow.com

9
Performance of rbind.data.frame
stackoverflow.com

9
Handling Latex backslashes in xtable
stackoverflow.com

9
Why is R giving a bad result of addition?
stats.stackexchange.com

9
Is this an efficient way to merge data frames in R?
stats.stackexchange.com

9
How to implement dummy variable using n-1 variables?
stats.stackexchange.com

8
Combining paste() and expression() functions in plot labels
stackoverflow.com

8
Display Correlation Tables as Descending List
stackoverflow.com

8
Replace NA values by row means
stackoverflow.com

8
Disable/suppress tcltk prompt in R
stackoverflow.com

8
How to fit a quadratic model knowing the maximum in R?
stackoverflow.com

8
Using as.factor rather than plyr and ddply to group variables in R?
stackoverflow.com

8
Computing rolling sums of stretches a vector with R
stackoverflow.com

8
Vectorize a for loop in R
stackoverflow.com

8
Why do lme and aov return different results for repeated measures ANOVA in R?
stats.stackexchange.com

8
For a random matrix, shouldn't a SVD explain nothing at all? What am I doing wrong?
stats.stackexchange.com

1 2 3