Jouni Helske

Jouni Helske has asked 13 questions and find answers to 29 problems.

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About

I am currently working on visual/interactive data analysis, coding with Python/JS/D3. I have previously worked mainly with state space models, MCMC, and related stuff, using R/C++/Fortran.

Jouni Helske questions

Is it beneficial to transpose an array in order to use column-wise operations?
How to get instance of class template out of the if statement? (C++)
How to evaluate arguments of a function call inside other function in R
Converting package using S3 to S4 classes, is there going to be performance drop?
Using generic functions of R, when and why?
R: Advantages of using a Fortran subroutine with .Call and C/C++ wrapper instead of .Fortran?
Citing articles in R package using roxygen2 and BibTeX?

Jouni Helske answers

Extracting value specific rows in R
Repeat the values of a row in matrix N number of times
un-log a times series while using the package forecast
Error using t.test() in R - not enough 'y' observations
linear model when all occurrences of independent variables are NA
How can I retain the initial white space in a line when writing Rd documentation?
Obtain residual standard errors of an "mlm" object returned by `lm()`
performance of adaptIntegrate vs. integrate
Operator overloading for functions in R - strange behavior
Pairwise graphical comparison of several distributions