On 9/10/07, Martin Maechler <[EMAIL PROTECTED]> wrote:
> PS> On 9/9/07, kevinchang <[EMAIL PROTECTED]> wrote:
> >> I tried to made the matrix with this size by either matrix() or
> array().
> >> However, there seems to be default limit of number for rows made. I
> got sort
> >> of error message from R .To be specific,
> >>
> >> m<--matrix(ncol=3,nrow=100000)
> >>
> >> error message:[ reached getOption("max.print") -- omitted 66667 rows ]]
> >>
> >> or
> >>
> >> a<-array(dim=c(10000,3,10))
> >>
> >> error message:reached getOption("max.print") -- omitted 6667 row(s)
> and 6
> >> matrix slice(s) ]
>
> PS> That is not an error message, I guess.
>
> Definitely not,
> thank you, Paul!
>
> Also, they were not produced by what Kevin showed (namely assignments)
> but rather when he *prints* the contents of his huge matrix /
> array.
>
> PS> When the matrices are huge, R is unable to print them
> PS> totally on the screen, but all data are present.
>
> Not at all "unable" !!
> R protects you from accidentally overflowing your "console" with
> huge amount of non-sensical output.
>
> As the warning above mentions,
> you should look at
> ? getOption
> ? options
> and particularly the 'max.print' option
>
> Is '' reached getOption("max.print") ''
> too difficult to read?
>
> You *can* increase the 'max.print' option as much as you like,
> and that's why I said 'not at all "unable"' above.
>
> Regards,
> Martin
>
> PS> For instance,
>
> >> m[(nrow(m)-10):nrow(m),]
> PS> [,1] [,2] [,3]
> PS> [1,] NA NA NA
> PS> [2,] NA NA NA
> PS> [3,] NA NA NA
> PS> [4,] NA NA NA
> PS> [5,] NA NA NA
> PS> [6,] NA NA NA
> PS> [7,] NA NA NA
> PS> [8,] NA NA NA
> PS> [9,] NA NA NA
> PS> [10,] NA NA NA
> PS> [11,] NA NA NA
>
> or rather just
>
> tail(m)
>
> or tail(m, 11)
> or head(m)
>
> or str(m)
>
> etc etc
>
> PS> See
>
> PS> ?getOption
>
> yes indeed.
Thanks, Martin, for your detailed comments. I have learned something from them.
Paul
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