Basics_R.R

sessionInfo()

## R version 3.3.1 (2016-06-21)
## Platform: x86_64-pc-linux-gnu (64-bit)
## Running under: Ubuntu 16.04.1 LTS
## 
## locale:
##  [1] LC_CTYPE=en_IN.UTF-8       LC_NUMERIC=C              
##  [3] LC_TIME=en_IN.UTF-8        LC_COLLATE=en_IN.UTF-8    
##  [5] LC_MONETARY=en_IN.UTF-8    LC_MESSAGES=en_IN.UTF-8   
##  [7] LC_PAPER=en_IN.UTF-8       LC_NAME=C                 
##  [9] LC_ADDRESS=C               LC_TELEPHONE=C            
## [11] LC_MEASUREMENT=en_IN.UTF-8 LC_IDENTIFICATION=C       
## 
## attached base packages:
## [1] stats     graphics  grDevices utils     datasets  methods   base     
## 
## loaded via a namespace (and not attached):
##  [1] magrittr_1.5    tools_3.3.1     htmltools_0.3.5 Rcpp_0.12.5    
##  [5] stringi_1.1.1   rmarkdown_1.0   knitr_1.13      stringr_1.0.0  
##  [9] digest_0.6.9    evaluate_0.9

ajay=c(23,46,77)
ls()

## [1] "ajay"

rm(ajay)
memory.size(ajay)

## Warning: 'memory.size()' is Windows-specific

## [1] Inf

memory.profile()

##        NULL      symbol    pairlist     closure environment     promise 
##           1        9289      180808        4247        1126        6935 
##    language     special     builtin        char     logical     integer 
##       51702          45         669       11257        6979       17894 
##      double     complex   character         ...         any        list 
##        1712           1       40188           2           0       13380 
##  expression    bytecode externalptr     weakref         raw          S4 
##          24        9597        2229         592         594        1048

memory.limit()

## Warning: 'memory.limit()' is Windows-specific

## [1] Inf

rm(list=ls())
getwd()

## [1] "/home/ajayohri/R/R Tutorial 2"

dir()

## [1] "Basics_R.html"      "Basics R.R"         "Basics_R.R"        
## [4] "Basics_R.spin.R"    "Basics_R.spin.Rmd"  "rsconnect"         
## [7] "R Tutorial 2.Rproj"

setwd("/home/ajayohri/R/")
dir()

## [1] "R Tutorial 1"                "R Tutorial 2"               
## [3] "x86_64-pc-linux-gnu-library"

setwd("/home/ajayohri/R/R Tutorial 2")
dir()

## [1] "Basics_R.html"      "Basics R.R"         "Basics_R.R"        
## [4] "Basics_R.spin.R"    "Basics_R.spin.Rmd"  "rsconnect"         
## [7] "R Tutorial 2.Rproj"

for (i in 1:10 ){ print(i^3)}

## [1] 1
## [1] 8
## [1] 27
## [1] 64
## [1] 125
## [1] 216
## [1] 343
## [1] 512
## [1] 729
## [1] 1000

for (i in 1:10 ){ print(i)}

## [1] 1
## [1] 2
## [1] 3
## [1] 4
## [1] 5
## [1] 6
## [1] 7
## [1] 8
## [1] 9
## [1] 10

firtsfun= function(x){x^2+2*x+11}
firtsfun(10)

## [1] 131

for (i in 1:10 ){ print(firtsfun(i))}

## [1] 14
## [1] 19
## [1] 26
## [1] 35
## [1] 46
## [1] 59
## [1] 74
## [1] 91
## [1] 110
## [1] 131

a= NA
for (i in 1:10 ){ 
  a[i]=firtsfun(i)
 }
a

##  [1]  14  19  26  35  46  59  74  91 110 131

str(a)

##  num [1:10] 14 19 26 35 46 59 74 91 110 131