R语言abs函数计算数值数据对象的绝对值实战
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R Programming absolute value function for numerical data object calculation practical guide
目录
R语言abs函数计算数值数据对象的绝对值实战
#基本语法
#计算向量对象的绝对值
计算矩阵对象的绝对值
计算dataframe的绝对值
计算dataframe特定列的绝对值
两个数值的绝对差
#基本语法
R语言绝对值计算的基本语法
abs(x)
#计算向量对象的绝对值
x <- c(- 5, 9, 3, - 1, 2) # Create example vector
# -5 9 3 -1 2
x_abs <- abs(x) # Apply abs function in R
x_abs # Print output to RStudio console
# 5 9 3 1 2# 计算矩阵对象的绝对值
mat <- matrix(- 9:5, nrow = 3, ncol = 5) # Create example matrix
mat # Print output to RStudio console
mat_abs <- abs(mat) # Apply abs function to matrix
mat_abs # Print output to RStudio console
# 计算dataframe的绝对值
df <- as.data.frame(mat) # Convert matrix to data.frame
df # Print output to RStudio console
df_abs <- abs(df) # Apply abs function to matrix
df_abs # Print output to RStudio console
# 计算dataframe特定列的绝对值
df_col_abs <- df # Duplicate example data.frame
df_col_abs$V2 <- abs(df_col_abs$V2) # Absolute value only of one column
df_col_abs # Print output to RStudio console
# 两个数值的绝对差
diff <- 5 - 20 # Difference of two values
diff # Print output to RStudio console
# -15
diff_abs <- abs(diff) # Calculate absolute difference
diff_abs # Print output to RStudio console
# 15参考：R abs Function (6 Example Codes) | How to Calculate an Absolute Value
参考：R
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