[R] R equivalent to Matlab spline(x,y,xx)

Hello I am currently translating some Matlab code into R and would like to know what people would recommend as the equivalent in R for spline(x,y,xx) in matlab. The latter performs a cubic spline interpolation where x,y are the given data vectors and xx is the new abscissa vector. It allows for

[R] matlab style plotting in R

Hello I was wondering how I can achieve matlab style plotting in R, in the sense that matlab allows you to plot multiple sets of variables within the same x-y axes. plot in R does not seem to cater for this. I tried 'overplot' from the gplots package but this assumes different y axes for the