[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: rotating contour lots
Craig Markwardt wrote:
> * It may be easier to rotate the contours afterwards. You would
> extract the contours using the PATH_INFO and PATH_XY keywords to
> the CONTOUR procedure, and then apply a simple rotation
> transformation like:
> c = cos(theta) & s = sin(theta)
> xp = x*c + y*s
> yp = -x*s + y*c
I think I am going to set up a newsgroup filter called "Craig", and
redirect everything Craig writes to a folder "Geom_advice", where I will
look every time I plan to use a coordinate transformation. You know, I
studied all this before (I think) and even had an A+. But it is very
hard when you forget something that you actually never really new :-(
Cheers,
Pavel