search for: lprice

...rs. the problem is that when I use the ksmooth() function in R it estimates the function at different points and not those that consist of the Z vector. the ksmooth() function in Splus on the other hand evaluates the points at the corresponding Z vector. both codes are given below d<-ksmooth(lprice,XX[,i],kernel="box") unique(lprice-d$x) in SPLUS will generate 0 while in R it generates a vector of different values. My second question is regarding the sm library: d<-sm.regression(lprice, XX[,i], h=sd(lprice), display="none") will only generate 50 point estimates whi...

...> the function at different points and not those that consist of the Z > > vector. > > > > the ksmooth() function in Splus on the other hand evaluates the points >at > > the corresponding Z vector. both codes are given below > > > > > > d<-ksmooth(lprice,XX[,i],kernel="box") > > unique(lprice-d$x) > > > > in SPLUS will generate 0 while in R it generates a vector of different > > values. > > > > > > > > My second question is regarding the sm library: > > > > d<-sm.regression(lp...

I encounters some codes in ggplot2 manual and confused with one of its lm syntax. The code is here: library(ggplot2) d <- subset(diamonds, carat < 2.5 & rbinom(nrow(diamonds), 1, 0.2) == 1) d$lcarat <- log10(d$carat) d$lprice <- log10(d$price) detrend <- lm(lprice ~ lcarat, data = d) d$lprice2 <- resid(detrend) mod <- lm(lprice2 ~ lcarat * color, data = d) # *** what puzzled me is the last statement marked with ***. How does R deal with lcarat * color, since color is not of numeric value. If this is ok, how...

Hello, I am relatively new to using R. The text file contains the date and price . I want to read and manipulate the data in R. However, when I use read.table, it treats all of the data as "factors" and I do not know how to treat the data as numbers: http://r.789695.n4.nabble.com/file/n4498828/p_diarios.txt p_diarios.txt setwd ("C:\\Users\\Sandro\\Dropbox\\R")