Error in *** : subscript out of bounds

Posted 2021-10-26 Data+Science+Insight

Error in *** : subscript out of bounds

目录

Error in *** : subscript out of bounds

问题：

解决：

完整错误：

---

问题：

数据越界了啊，除了别介，谁知道那是在哪里？你问内存？内存问谁？

#make this example reproducible
set.seed(0)

#create matrix with 10 rows and 3 columns
x = matrix(data = sample.int(100, 30), nrow = 10, ncol = 3)

#print matrix
print(x)

#attempt to display 11th row of matrix
x[11, ]

#attempt to display 4th column of matrix
x[, 4]

#attempt to display value in 11th row and 4th column
x[11, 4]

解决：

#

#display number of rows and columns in matrix
dim(x)

#

#display 10th row of matrix
x[10, ]

#display number of columns in matrix
ncol(x)

#display 3rd column of matrix
x[, 3]

#display value in 10th row and 3rd column of matrix
x[10, 3]

完整错误：

> 
> #attempt to display 11th row of matrix
> x[11, ]
Error in x[11, ] : subscript out of bounds
> 
> #attempt to display 4th column of matrix
> x[, 4]
Error in x[, 4] : subscript out of bounds
> 
> #attempt to display value in 11th row and 4th column
> x[11, 4]
Error in x[11, 4] : subscript out of bounds
>