Robust Scaling With Median and Mad
RobScale(x, center = TRUE, scale = TRUE)
x |
a numeric matrix(like object). |
center |
a logical value defining whether x should be centered by the median. Centering is done by subtracting the column medians (omitting NAs) of x from their corresponding columns. If center is FALSE, no centering is done. |
scale |
a logical value defining whether x should be scaled by the mad. Scaling is done by dividing the (centered) columns of x by their mad. If scale is FALSE, no scaling is done. |
the centered, scaled matrix. The numeric centering and scalings used (if any) are returned as attributes "scaled:center" and "scaled:scale"
Andri Signorell <andri@signorell.net>
scale, sweep
x <- d.pizza$temperature plot(x=seq_along(x), y=RobScale(x), xlim=c(0,100)) points(x=seq_along(x), y=scale(x), col="red" )
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