[R] vertical semi-circles in R

Rui Barradas
Sun, 25 Jun 2017 18:45:33 -0000

Hello,

I'm not the greatest graphics programmer but is this it?

#install.packages("shape")

library(shape)  # for function plotcircle

plot(0,0,col="white")
segments(0,0,0.3,0.3)
segments(0.3,0.4,0.3,0.3)
segments(0.3,0.4,0,0.7)
segments(0,0.7,0,0.6)
segments(0,0.0,0,0.1)

plotcircle(r = 0.25, mid = c(0,0.35), from = pi/2, to = -pi/2)


Note: you say you've tried every online help with no success. I had
never used package shape, at an R prompt I typed

 > ?circle
No documentation for ?circle? in specified packages and libraries:
you could try ???circle?

so I tried ??circle and found the package. The rest took me less than 10
minutes. (Less than 5?)

Hope this helps,

Rui Barradas

Em 25-06-2017 12:34, Eliza B escreveu:
> Dear useRs,
>
>
> I am to teach my students some drawing techniques in R. I started shape of
an handle by using the following codes;
>
>> plot(0,0,col="white")
>
>> segments(0,0,0.3,0.3)
>
>> segments(0.3,0.4,0.3,0.3)
>
>> segments(0.3,0.4,0,0.7)
>
>> segments(0,0.7,0,0.6)
>
>> segments(0,0.0,0,0.1)
>
> The coding will draw a section of a handle. Now I want to draw semi circles
of radius 0.05 between (0,0.6) and (0,0.1), oriented vertically and outward with
mouth facing against the y-axis.
>
> I tried every help available online but to no use.
>
> Thanks in advance,
>
> EB
>
>
> 	[[alternative HTML version deleted]]
>
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