[R] Printing vector

William Dunlap wdun|@p @end|ng |rom t|bco@com
Mon Jul 22 20:40:38 CEST 2019 

By the way, the default print method has the argument 'na.print' that can
speciify how to print an NA value.  E.g.,

> print(c(1234/9999, NA, 1), na.print="n/a")
[1] 0.1234123       n/a 1.0000000
> print(c(1234/9999, NA, 1), na.print="")
[1] 0.1234123           1.0000000
> print(c(1234/9999, NA, 1))
[1] 0.1234123        NA 1.0000000



Bill Dunlap
TIBCO Software
wdunlap tibco.com


On Mon, Jul 22, 2019 at 11:07 AM Steven <syen using hqu.edu.cn> wrote:

> Thank you, Gentlemen. That serves my need. Bill's routine is great.
>
> Also, Rui: Is there a way to get rid of the filled "NA" and use space
> instead. Using fill = "" does not help either; it causes all numbers to be
> embraced with quotations. Finally, I have no idea why Rui's message did not
> reach me at all (not even in the junk mail box). But, obviously Bill had
> received it. Hmm.
>
> Steven Yen
> William Dunlap 於 2019/7/23 上午 12:33 寫道:
>
> The following mimics Fortran printing with format
> <perLine>F<fWidth>.<fPrecision>.
>
> print1 <- function (x, perLine = 10, fWidth = 8, fPrecision = 2,
> fortranStars = TRUE)
> {
>     format <- paste0("%", fWidth, ".", fPrecision, "f")
>     oldWidth <- getOption("width")
>     on.exit(options(width = oldWidth))
>     options(width = perLine * fWidth)
>     fx <- sprintf(format, x)
>     if (fortranStars) {
>         fx[nchar(fx) > fWidth] <- strrep("*", fWidth)
>     }
>     cat(fx, sep = "", fill = TRUE)
>     invisible(x)
> }
>
> Compare
> > print1((-1.7)^(1:24))
>    -1.70    2.89   -4.91    8.35  -14.20   24.14  -41.03   69.76 -118.59
>  201.60
>  -342.72  582.62 -990.46 1683.78-2862.42
> 4866.12-8272.4014063.08********40642.31
> ********************************
> with the output from the Fortran
> % cat a.f
>       double precision x(24);
>       integer i
>       do 10 i=1,24
>         x(i) = (-1.7d0) ** i
>  10   continue
>       write(6, "(10f8.2)") x
>       stop
>       end
> % gfortran a.f
> % ./a.out
>    -1.70    2.89   -4.91    8.35  -14.20   24.14  -41.03   69.76 -118.59
>  201.60
>  -342.72  582.62 -990.46 1683.78-2862.42
> 4866.12-8272.4014063.08********40642.31
> ********************************
>
>
> Compare
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
>
>
> On Mon, Jul 22, 2019 at 12:19 AM Rui Barradas <ruipbarradas using sapo.pt>
> wrote:
>
>> Simpler, no loops:
>>
>>
>> print0b <- function(x, len = 10, digits = 2, fill = ""){
>>    n <- length(x)
>>    x <- round(x, digits = digits)
>>    m <- n %/% len
>>    remainder <- n %% len
>>    A <- matrix(x[seq_len(len*m)], ncol = len)
>>    if(remainder > 0){
>>      A <- rbind(A, c(x[(len*m + 1):n], rep(fill, len*(m + 1) - n)))
>>    }
>>    A
>> }
>>
>>
>> Hope this helps,
>>
>> Rui Barradas
>>
>> Às 07:47 de 22/07/19, Rui Barradas escreveu:
>> > Hello,
>> >
>> > Maybe something like the following is what you want.
>> > I have added an extra argument 'fill' to allow to choose what to print
>> > in the end. It's default value is "" making the entire matrix elements
>> > characters but it can be NA or 0.
>> >
>> > print0 <- function(x, len = 10, digits = 2, fill = ""){
>> >    n <- length(x)
>> >    x <- round(x, digits = digits)
>> >    passes <- n %/% len
>> >    remainder <- n %% len
>> >    A <- matrix(fill, nrow = passes + (remainder > 0), ncol = len)
>> >    for(i in seq_len(passes)){
>> >      A[i, ] <- x[(len*(i - 1) + 1):(len*i)]
>> >    }
>> >    A[nrow(A), 1:remainder] <- x[(len*passes + 1):n]
>> >    A
>> > }
>> >
>> > print0(rnorm(23), 10)
>> > print0(rnorm(23), 10, fill = 0)
>> >
>> >
>> > Hope this helps,
>> >
>> > Rui Barradas
>> >
>> > Às 21:34 de 20/07/19, Steven escreveu:
>> >> Dear All:
>> >>
>> >> Below is what I meant. Procedure print0 allows me to print a vector of
>> >> length 53 in four rows of 10 plus 1 row of 3 (Ido not like the NA).
>> This
>> >> is silly. I am hoping that there is a candid way to print the matrix.
>> >> Thank you.
>> >>
>> >> Steven Yen
>> >>
>> >> ===
>> >> n<-53; x<-runif(n); # x<-round(x,2)
>> >>
>> >> print0<-function(x,c=10,digits=2){
>> >> # ******************************************
>> >> # Print vector in rows of a specified length
>> >> # ******************************************
>> >>     n<-length(x)
>> >>     r<-n/c; if(n%%c>0) r<-as.integer(r)+1
>> >>     y<-rep(NA,r*c)
>> >>     y[1:n]<-x
>> >>     y<-matrix(y,r,c,byrow=T)
>> >>     y<-round(y,digits=digits)
>> >>     y
>> >> }
>> >>
>> >> print0(x,c=10,digits=3)
>> >>
>> >> # result
>> >> # [,1]  [,2]  [,3]  [,4]  [,5]  [,6]  [,7]  [,8]  [,9] [,10]
>> >> # [1,] 0.576 0.291 0.600 0.515 0.135 0.335 0.296 0.911 0.454 0.696
>> >> # [2,] 0.699 0.728 0.442 0.469 0.996 0.539 0.772 0.768 0.652 0.882
>> >> # [3,] 0.614 0.228 0.748 0.071 0.788 0.428 0.885 0.722 0.432 0.881
>> >> # [4,] 0.422 0.148 0.459 0.870 0.044 0.421 0.282 0.337 0.751 0.579
>> >> # [5,] 0.468 0.659 0.446 0.199 0.388 0.576 0.829 0.186 0.823 0.960
>> >> # [6,] 0.880 0.944 0.709    NA    NA    NA    NA    NA NA    NA
>> >>
>> >> Steven 於 2019/7/20 下午 02:00 寫道:
>> >>>
>> >>> Is there a convenient way to print a vector into rows of a specified
>> >>> column length? What I need is to print in the old FORTRAN format,
>> viz.,
>> >>>
>> >>> format(10F8.2)
>> >>>
>> >>> which would print, for instance, a vector of 25 into two rows of 10
>> >>> plus an incomplete row of 5. I managed to write a procedure for that
>> >>> task, as shown below (except that I prefer simply blanks rather than
>> >>> the NA). I am too embarrassed to even show the procedure. In short, I
>> >>> like to print in the above FORTRAN format. Thank you.
>> >>>
>> >>> ----
>> >>>
>> >>> [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [1,] 0.66 0.26 0.82
>> >>> 0.73 0.13 0.05 0.56 0.67 0.74 0.87 [2,] 0.91 0.25 0.40 0.39 0.50 0.89
>> >>> 0.07 0.84 0.14 0.75 [3,] 0.38 0.08 0.86 0.97 0.56 NA NA NA NA NA
>> >>
>> >>     [[alternative HTML version deleted]]
>> >>
>> >> ______________________________________________
>> >> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> >> https://stat.ethz.ch/mailman/listinfo/r-help
>> >> PLEASE do read the posting guide
>> >> http://www.R-project.org/posting-guide.html
>> >> and provide commented, minimal, self-contained, reproducible code.
>> >>
>> >
>> > ______________________________________________
>> > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> > https://stat.ethz.ch/mailman/listinfo/r-help
>> > PLEASE do read the posting guide
>> > http://www.R-project.org/posting-guide.html
>> > and provide commented, minimal, self-contained, reproducible code.
>>
>> ______________________________________________
>> R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>

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