You can also look at the my.symbols and ms.arrows functions in the
TeachingDemos package.
On Wed, Mar 29, 2017 at 7:44 AM, julio cesar oliveira wrote:
> Dears,
>
> The arrows command uses the start and end coordinates of each vector, but I
> have the starting coordinates, azimuth, and length.
>
Hi Julio,
Perhaps "vectorField" (plotrix) is what you are looking for.
Jim
On Thu, Mar 30, 2017 at 12:44 AM, julio cesar oliveira
wrote:
> Dears,
>
> The arrows command uses the start and end coordinates of each vector, but I
> have the starting coordinates, azimuth, and length.
>
> So, There a
II find using complex numbers makes for less typing with
this sort of thing. Note the use of plot(asp=1,...) to force
equal scales on both axes so the angles are right.
(I think asp=1 should have been the default when plotting complex
numbers, but too late now.)
> azimuthToNative <- function(degr
Apologies; 'length' is an arrows() argument. Use something else - see below.
> > x<- c(1,2,4)
> > y<- c(2,3,5)
> > Azimuth<- c(45,90,180)
> > Length<- c(1,0.5,1)
May be packages out there but if it's a quick fix you want, roll your own.
arrows.az <- function(x, y, azimuth, size, ..., units=c("de
> The arrows command uses the start and end coordinates of each vector, but
> I have the starting coordinates, azimuth, and length.
>
> So, There are package that plot this arrows?
>
> Example:
>
> > x<- c(1,2,4)
> > y<- c(2,3,5)
> > Azimuth<- c(45,90,180)
> > Length<- c(1,0.5,1)
May be package
It's just basic trig to convert.
-- Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Wed, Mar 29, 2017 at 6:44 AM, julio cesar oliveira wrote:
> Dears,
>
Dears,
The arrows command uses the start and end coordinates of each vector, but I
have the starting coordinates, azimuth, and length.
So, There are package that plot this arrows?
Example:
> x<- c(1,2,4)
> y<- c(2,3,5)
> Azimuth<- c(45,90,180)
> Length<- c(1,0.5,1)
Thanks,
Julio
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