Hi Martin,
I got my initial question fully answered.
I do not have enough experience to to judge whether the behavior of R with
regard to Inf is "excellent" or "better" than Perl.
In my opinion, both Perl and R are great languages, designed for very
different applications.
So instead of me trying
> "TS" == Timur Shtatland <[EMAIL PROTECTED]>
> on Fri, 12 Sep 2008 11:52:25 -0400 writes:
TS> I am more used to getting an error if you try to take
TS> the log of 0, like this (in Perl):
TS> perl -le 'for my $num (1, 0, -1, -2) { print log $num;
TS> }' 0 Can't take lo
r
> Intermountain Healthcare
> [EMAIL PROTECTED]
> (801) 408-8111
>
>
>
> > -Original Message-
> > From: Timur Shtatland [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, September 11, 2008 6:03 PM
> > To: Greg Snow
> > Cc: r-help@r-project.org
> &g
Thursday, September 11, 2008 6:03 PM
> To: Greg Snow
> Cc: r-help@r-project.org
> Subject: Re: [R] making spearman correlation cor() call fail
> with log(0) as input
>
> You are right, Inf and -Inf are not considered errors in R,
> they are accepted as input to Spearman'
lp@r-project.org"
> Sent: 9/10/08 3:51 PM
> Subject: [R] making spearman correlation cor() call fail with log(0) as input
>
>
> Hi,
>
> How can I make the cor(x, y, method="spearman") call to produce an
> error when the input to it (x, y) produces an erro
/10/08 3:51 PM
Subject: [R] making spearman correlation cor() call fail with log(0) as input
Hi,
How can I make the cor(x, y, method="spearman") call to produce an
error when the input to it (x, y) produces an error? Here is a simple
example:
> a <- c(0, 1, 2)
> b <- c(100, 2
Hi Miltinho,
Thank you for the reply. I know that this is one way to stop
cor(log()...) from failing.
However, my question was exactly the opposite: how to *make* it fail.
cor() silently succeeds and even returns a value even when the input
to it fails on its own (e.g., log(0) fails). Note that
Hi Timur,
try
cor(log(a+1), log(b+1), method="pearson")
HTH,
miltinho
brazil
On Wed, Sep 10, 2008 at 6:04 PM, Timur Shtatland <[EMAIL PROTECTED]>wrote:
> Hi,
>
> How can I make the cor(x, y, method="spearman") call to produce an
> error when the input to it (x, y) produces an error? Here is a
Hi,
How can I make the cor(x, y, method="spearman") call to produce an
error when the input to it (x, y) produces an error? Here is a simple
example:
> a <- c(0, 1, 2)
> b <- c(100, 2, 4)
## error:
> log(a)
[1] -Inf 0.000 0.6931472
## error, as expected:
> cor(log(a), log(b), method="p
9 matches
Mail list logo
