TY - JOUR AU - Fischer, Daniel AU - Mosler, Karl AU - Möttönen, Jyrki AU - Nordhausen, Klaus AU - Pokotylo, Oleksii AU - Vogel, Daniel PY - 2020/02/23 Y2 - 2024/03/28 TI - Computing the Oja Median in R: The Package OjaNP JF - Journal of Statistical Software JA - J. Stat. Soft. VL - 92 IS - 8 SE - Articles DO - 10.18637/jss.v092.i08 UR - https://www.jstatsoft.org/index.php/jss/article/view/v092i08 SP - 1 - 36 AB - The Oja median is one of several extensions of the univariate median to the multivariate case. It has many desirable properties, but is computationally demanding. In this paper, we first review the properties of the Oja median and compare it to other multivariate medians. Then, we discuss four algorithms to compute the Oja median, which are implemented in our R package OjaNP. Besides these algorithms, the package contains also functions to compute Oja signs, Oja signed ranks, Oja ranks, and the related scatter concepts. To illustrate their use, the corresponding multivariate one- and C-sample location tests are implemented. ER -