[R] square and points on the same figure

[Chuck Cleland]

Sam R. Smith wrote:
> after typing
> symbols(x=0.5, y=0.5, squares=c(0.3), add=TRUE)
> it works.
> I want to add one more using different length such as
> symbols(x=0.5, y=0.5, squares=c(0.15), add=TRUE)
> but this square did not show.

Specify both (all) squares in the same call to symbols:

csr <-function(n=60){
x=runif(n)
y=runif(n)
f=cbind(x,y)
}
plot(csr())

symbols(x=c(0.5, 0.5), y=c(0.5, 0.5), squares=c(0.30,0.15), add=TRUE)

> Chuck Cleland <ccleland at optonline.net> wrote:
> Sam R. Smith wrote:
> 
>>Hi,
>>I have the following code to 
>>randomly generate the 
>>points:
>>csr <-function(n=60){
>>x=runif(n)
>>y=runif(n)
>>f=cbind(x,y)
>>}
>>plot(csr())
>>
>>I wonder how to code to draw a square centering on 0.5,0.5; with the length of each side to be 0.3 on the same figure with these plotted points?
> 
> 
> ?symbols
> 
> symbols(x=0.5, y=0.5, squares=c(0.3), add=TRUE)
> 
> 
>>Thanks,
>>Sam
>>
>>
>>
>>---------------------------------
>>
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>>
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> 
> 


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Chuck Cleland, Ph.D.
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