我已在R REPL中编写此代码
content <- read.csv("[001.csv][1]", header=TRUE)
head(content, n=5L)
cc <- subset(content, !is.na(sulfate) & !is.na(nitrate))
head(cc, n = 5L)
cor <- cor(cc[2], cc[3])
print(cor)
head(content, n=5L)
# Date sulfate nitrate ID
#1 2003-01-01 NA NA 1
#2 2003-01-02 NA NA 1
#3 2003-01-03 NA NA 1
#4 2003-01-04 NA NA 1
#5 2003-01-05 NA NA 1
head(cc, n=5L)
# Date sulfate nitrate ID
#279 2003-10-06 7.21 0.651 1
#285 2003-10-12 5.99 0.428 1
#291 2003-10-18 4.68 1.040 1
#297 2003-10-24 3.47 0.363 1
#303 2003-10-30 2.42 0.507 1
print(cor)
# nitrate
#sulfate -0.2225526
我想知道为什么它会说nitrate sulfate -0.2225526而不仅仅是-0.2225526。
在我看来，cor函数无法理解行和标题之间的区别？还是别的......
我预期的输出只是-0.2225526而不是nitrate sulfate -0.2225526