Hello,
        I need to plot a line graph using lattice so that the endpoints are  
flush with the left and right vertical axes.
        So the scale end points and horizontal axes length should coincide.
        This works
        
        u=newdata[1:100,] #u[,1] is from 1700-1795
        xyplot(u[,2]~u[,1],xlim=range(u[,1]))


        Now u[,3] is a categorical variable and now I want use u[,3] as a  
conditioning variable yet still plot with the above condition
        sc <- list()
        sc$"x"=list(relation="free",tick.number=6)
        p1=u[u[,3]==1,1]
        p2=u[u[,3]==2,1]
        xlim=list(range(p1),range(p2))
        xyplot(u[,2]~u[,1]|u[,3],scales=sc,xlim=xlim,type="l",layout=c(1,2))

        In this case there is some padding between the endpoints and the  
vertical axes.
        How can I remove this padding?

        Many thanks
        Saptarshi

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