Error in hist.default(data) : ‘x‘ must be numeric

Posted 2022-04-07 Data+Science+Insight

Error in hist.default(data) : 'x' must be numeric

目录

Error in hist.default(data) : 'x' must be numeric

问题：

解决：

完整错误：

---

问题：

# 不是数值所以无法绘制直方图；

#define vector
data <- c('1.2', '1.4', '1.7', '1.9', '2.2', '2.5', '3', '3.4', '3.7', '4.1')

#attempt to create histogram to visualize distribution of values in vector
hist(data)

解决：

#class检查类别

#check class
class(data)

[1] "character"

#转化为数值之后再绘图

#convert vector from character to numeric
data_numeric <- as.numeric(data)

#create histogram
hist(data_numeric)

完整错误：

> #define vector
> data <- c('1.2', '1.4', '1.7', '1.9', '2.2', '2.5', '3', '3.4', '3.7', '4.1')
> 
> #attempt to create histogram to visualize distribution of values in vector
> hist(data)
Error in hist.default(data) : 'x'必需为数值