[R] How to Adaptively Set Up the Coordinate Range of Multiple Graphs in One Figure

[Jim Lemon]

On 08/31/2010 08:26 PM, Wonsang You wrote:
>
> Hi, R-Helpers,
>
> I would like to ask about multiple graphs in one figure. I tried to execute
> the following codes.
>
>   xlim<- c(1,100)
>
> ylim<- c(1,4)
>
> plot(NA, xlim=xlim, ylim=ylim)
>
>
>> x<- c(1:100)
>
> for(j in seq(1,10,by=1)) {
>
>       y<- j*x^2+log(j)
>
>       lines(x, y)
>
> }
>
>
> In the above codes, I had to  arbitrarily set up the coordinate range of the
> figure in advance before calculating the values y. (seexlim and ylim)
> In results, the figure did not contain all data since most of data were
> outside the predefined range.
> I am wondering about how to control xlim and ylim adaptive to the real range
> of data, in order to include all data in the figure.

Hi Stephen,
One easy way is:

xlim<-range(x)
ylim<-range(y)

Jim