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
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