创建R脚本文件test0201.R完成下面任务 -给变量x.scalar赋值为100L -给变量y.scalar赋值为3.14 一给变量z.scalar赋值为TRUE 然后使用mode,class,typeof函数分别查 x.scalar,y.scalar和z.scalar的数据类型 -给变量x.vector赋值为c(1:4) 一给变量y.vector赋值为c(1,2,3,4) 一给变量z.vector赋值为c(T,FFT) 
时间: 2023-03-31 20:05:08 浏览: 21
好的,我可以回答这个问题。下面是 R 脚本文件 test0201.R 的代码:
x.scalar <- 100L
y.scalar <- 3.14
z.scalar <- TRUE
cat("x.scalar 的数据类型是:", mode(x.scalar), "\n")
cat("y.scalar 的数据类型是:", class(y.scalar), "\n")
cat("z.scalar 的数据类型是:", typeof(z.scalar), "\n")
x.vector <- c(1:4)
y.vector <- c(1, 2, 3, 4)
z.vector <- c(T, FFT)
cat("x.vector 的数据类型是:", mode(x.vector), "\n")
cat("y.vector 的数据类型是:", class(y.vector), "\n")
cat("z.vector 的数据类型是:", typeof(z.vector), "\n")
相关问题
·创建R脚本文件test0201.R完成下面任务 -给变量x.scalar赋值为100L -给变量y.scalar赋值为3.14 -给变量z.scalar赋值为TRUE -然后使用mode, class,typeof函数分别查询变量 x.scalar, y.scalar和z.scalar的数据类型 -给变量x.vector赋值为c(1:4) -给变量y.vector赋值为c(1,2,3,4) -给变量z.vector赋值为c(T,F,FT)
好的,我可以回答这个问题。
test0201.R 文件的代码如下:
x.scalar <- 100L
y.scalar <- 3.14
z.scalar <- TRUE
mode(x.scalar)
class(x.scalar)
typeof(x.scalar)
mode(y.scalar)
class(y.scalar)
typeof(y.scalar)
mode(z.scalar)
class(z.scalar)
typeof(z.scalar)
x.vector <- c(1:4)
y.vector <- c(1,2,3,4)
z.vector <- c(T,F,FT)
The signal-to-noise ratio must be a real scalar.
Yes, the signal-to-noise ratio (SNR) is defined as the ratio of the power of a signal to the power of the noise corrupting the signal. Since power is a real scalar quantity, the SNR is also a real scalar quantity. It is commonly expressed in decibels (dB) which is a logarithmic unit, but it still represents a real scalar value.
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