Thank you very much for your quick answers!
The %% operator seems the easiest way to go; it works perfectly.
Best regards,
Gwennaël
Le 28/01/2016 20:39, William Dunlap a écrit :
> In addition to the other fine answers, you might find it convenient
> to represent the points as complex numbers an
In addition to the other fine answers, you might find it convenient
to represent the points as complex numbers and use the Arg function
to get the angle (and abs() or Mod() the distance).
> z <- complex(real=0.8660254, imaginary=0.5)
> Arg(z) / base::pi * 180
[1] 30
> Arg(-z) / base::pi *
Gwennaël,
Does the %% operator work for you?
It gives x mod y (or the remainder after dividing x into y...result is
guaranteed to be <=0 and >y)
E.g.
-150 %% 360 # 210
570 %% 360# 210
https://stat.ethz.ch/R-manual/R-devel/library/base/html/Arithmetic.html
-Dan
On Thu, Jan 28, 2
Functions return one value.
Look at ?atan2 to address ambiguity in identifying angles.
--
Sent from my phone. Please excuse my brevity.
On January 28, 2016 9:09:53 AM PST, "Gwennaël Bataille"
wrote:
>Dear all,
>I'd like to calculate the angle from one point (origin) to another
>(target), wh
Dear all,
I'd like to calculate the angle from one point (origin) to another
(target), whatever their coordinates.
But I encounter some problems (detailed below). The problem could be
solved if one of you could answer positively to one of the following
questions:
1) Is there a function in R c
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