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- z <-1:100
- y <- seq(1,5)
- y <- c(1,5)
- (1:5)^3
- #################################
- plot(z,sin(z),type="l") # z yra x koordinatė, o sin(z)- y koordinatė;
- # “l” nurodo, kad taškus reikia sujungti linijomis
- lines(z,(sin(z))^3,lty=2) # Funkcija “lines” papildo pirmą grafiką
- # linijomis; lty=2 nurodo linijos tipą
- lines(z,(sin(z))^10,lty=3)
- legend(0,-0.5,c("1","3","10"),lty=c(1,2,3)) # Legendos viršutinis kairysis kampas bus taške (0;0,5)
- ###################################
- methods(mean)
- mean #funkcijos mean tekstas
- mean(1:5)
- mean.mano <- function(x){sum(x)/length(x)}
- mean.mano(1:5)
- mean(c(1,2,3,4,50),trim=0.2) #atmetimas 20% reiksmiu
- #################################
- search() #rodo naudojamus paketus
- install.packages(car)
- install.packages(c("gregmisc",”xgobi”))
- library(car) #naujo paketo prijungimas
- library()#visu paketu sarasas
- library(help=car) #car objektu sarasas
- data() #sarasas rinkiniu, prijungtu prie dabartinio paieskos kelio
- data(package=”MASS”) #instaliuoto paketo "MASS" duomenu rinkiniai
- data(package = .packages(all.available = TRUE))#visu instaliuotu paketu
- data(Davis) #duomeniniu objektu apziura
- summary(Davis) #bendroji info
- str(Davis) #bendroji info
- attach(Davis)#Davis stulpeliu padarymas pasiekiamais
- mean(height)
- help(image)|
- example(image)
- ############################ANALIZAI
- height
- sex
- sex=="M"
- height[sex=="M"]
- mean(height[sex=="M"])
- summary(height[sex=="F"])
- tapply(height,sex,mean) #equivalent
- boxplot(height~sex) #grafinis pavaizdavimas/duomenu atsekimas
- detach(Davis)
- ############################
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