rbind help
Hi Mike,
MikSmith wrote:
Hi I have a dataset of orientation and elevation in a dataframe which I am plotting in circular. Orientation is on the range 0-360, however I need to reduce this to 0-180 as the values over 180 are not necessarily correct. I can do striae$orientation[striae$orientation>180]-180) to extract these values, but I then want to combine them back in to the original dataframe (with the elevation values). I assume rbind is the thing to use and have tried something like: test <- rbind((striae$orientation[striae$orientation>180]-180), (striae$orientation[striae$orientation<=180]))
I would do the conversion in place: striae$orientation <- ifelse(striae$orientation > 108, striae$orientation - 180, striae$orientation) Best, Jim
Not being a regular R user I suspect the syntax is easy when you know it!! Any help much appreciated. Best wishes mike
James W. MacDonald, M.S. Biostatistician Douglas Lab University of Michigan Department of Human Genetics 5912 Buhl 1241 E. Catherine St. Ann Arbor MI 48109-5618 734-615-7826