如何抑制表中的零打印(zero.print =""不起作用)

Question

我有NAs的对角矩阵和我想要隐藏的零.

na.print =""工作正常,但是零.print ="." 似乎把0.00视为!= 0？

这是一个打印输出的可运行示例,因此您可以看到我的意思:

x <- matrix(c(0.01, NA, NA, NA, 0.00, 0.00, NA, NA, 0.00, 0.00, -0.01, NA, 0.00, 0.00, 0.00, 0.00), nrow=4, byrow=TRUE)
x
         [,1] [,2]  [,3] [,4]
    [1,] 0.01   NA    NA   NA
    [2,] 0.00    0    NA   NA
    [3,] 0.00    0 -0.01   NA
    [4,] 0.00    0  0.00    0

print.table(x, na.print="", zero.print=".")
         [,1]  [,2]  [,3]  [,4] 
    [1,]  0.01                  
    [2,]  0.00  0.00            
    [3,]  0.00  0.00 -0.01      
    [4,]  0.00  0.00  0.00  0.00

按照下面的有用答案(谢谢大家!),并基于print.table中的显式选择而不是zero.print项目中的任何项目失败(x == round(x)),这里有一个适用的版本浮点.我为数据帧打印任务编写了它,但它适用于矩阵.

print.dataframe <- function (x, digits = getOption("digits"), quote = FALSE, na.print = "", zero.print = "0", justify = "none", ...){
    xx <- format(x, digits = digits, justify = justify)
    if (any(ina <- is.na(x))) 
        xx[ina] <- na.print
    i0 <- !ina & x == 0
    if (zero.print != "0" && any(i0)) 
        xx[i0] <- zero.print
    if (is.numeric(x) || is.complex(x)){
        print(xx, quote = quote, right = TRUE, ...)
    }else{
        print(xx, quote = quote, ...)   
    }
    invisible(x)
}

print.dataframe(bob, zero.print = ".", justify="left")

Answer 1

这是一个解决方法：

> print.table(local({x[x==0] <- NA; x}))
     [,1]  [,2] [,3]  [,4]
[1,]  0.01                
[2,]                      
[3,]            -0.01     
[4,]                      

如果您需要 NA 和零的不同表达式，那么，

> print(ifelse(is.na(x), "", ifelse(x == 0, ".", x)), quote = FALSE)
     [,1] [,2] [,3]  [,4]
[1,] 0.01                
[2,] .    .              
[3,] .    .    -0.01     
[4,] .    .    .     .