1992, the R language was born. The R language is the product of the PC and Linux era, and R is similar to the S language developed by Bell Labs, and R supports a range of analytical techniques, including statistical analysis, predictive modeling, and data visualization. Numerous expansion packages can be found on the Cran.
The preferred interface for R Software is the command line interface, which invokes the corresponding function function by writing a script. It also supports a graphical interface.
The R language can be used to do data mining, and we'll use it to read the contents of the birth2.csv.
Birth2.csv
ALGERIA, 36.4,14.6congo, 37.3,8egypt, 42.1,15.3ghana, 55.8,25.6ivory COAST, 56.1,33.1malag ASY, 41.8,15.8morocco, 46.1,18.7tunisia, 41.7,10.1cambodia, 41.4,19.7ceylon, 35.8,8.5china , 34,11taiwan, 36.3,6.1hong KONG, 32.1,5.5india, 20.9,8.8indonesia, 27.7,10.2iraq, 20 .5,3.9france, 25,6.2japan, 17.3,7jordan, 46.3,6.4korea, 14.8,5.7malaysia, 33.5,6.4mongo LIA, 39.2,11.2philllipines, 28.4,7.1syria, 26.2,4.3thailand, 34.8,7.9vietnam, 23.4,5.1canada , 24.8,7.8costa RICA, 49.9,8.5dominican R, 33,8.4guatemala, 47.7,17.3honduras, 46.6,9.7mexico, 45.1 , 10.5NICARAGUA, 42.9,7.1panama, 40.1,8united states, 21.7,9.6argentina, 21.8,8.1bolivia, 17.4,5.8braz IL, 45,13.5chile, 33.6,11.8colombia, 44,11.7ecuador, 44.2,13.5peru, 27.7,8.2uruguay , 22.5,7.8venezuela , 42.8,6.7austria, 18.8,12.8belgium, 17.1,12.7britain, 18.2,12.2bulgaria, 16.4,8.2czechoslovakia, 16.9,9.5denmark, 17.6,19.8finland, 18.1,9.2france, 18.2,11.7e. Germany, 17.5,13.7w. Germany, 18.5,11.4greece, 17.4,7.8hungary, 13.1,9.9ireland, 22.3,11.9italy, 19,10.2netherla NDS, 20.9,8norway, 17.5,10poland, 19,7.5portugal, 23.5,10.8romania, 15.7,8.3spain, 21.5 , 9.1SWEDEN, 14.8,10.1switzerland, 18.9,9.6U.S.S.R. , 21.2,7.2yugoslavia, 21.4,8.9australia, 21.6,8.7new ZEALAND, 25.5,8.8
Load the appropriate packages with the built-in functions for R, loaded with the syntax: library (X); X indicates that the package
Lib2. R
Library (MASS) library (lpsolve) library (sampling) library (RODBC) library (Survival) Library (splines) Library (timedate) library (timeSeries) library (Norm) library (fbasics) library (rattle) library (ellipse Library (lattice) library (nnet) library (MICE) library (arules) library (colorspace) library (TSP) library (gclus) library (Scatterplot3d) library (GRID) library (VCD) library (seriation) library (cluster) library (mvtnorm) library (STATS4) Library (Modeltools) library (Multcomp) library (mclust) library (Flexmix) library (FPC)
In the Command Line window of the R software, enter the statement
SETWD ("D://r_work//data") #设置工作区间data4 = read.table ("Birth2.csv", Header=f, sep= ",") #读取csv文件data4 # Content in the output vector data4
The effect is as follows:
Figure (1) reading the contents of a. csv file in R language
R language reads the contents of the CSV