[R] WIERD: Basic computing in R

2008-07-01 Thread [EMAIL PROTECTED]
Can someone please enlighten me as to why the following happens? -2.7^8.6 [1] -5125.407 p- -2.7 q- 8.6 p^q [1] NaN R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to variables and then the computation is repeated. Thanks in advance for any

Re: [R] WIERD: Basic computing in R

2008-07-01 Thread Dirk Eddelbuettel
On Tue, Jul 01, 2008 at 11:15:58AM -0700, [EMAIL PROTECTED] wrote: Can someone please enlighten me as to why the following happens? -2.7^8.6 [1] -5125.407 p- -2.7 q- 8.6 p^q [1] NaN R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to

Re: [R] WIERD: Basic computing in R

2008-07-01 Thread Marc Schwartz
on 07/01/2008 01:15 PM [EMAIL PROTECTED] wrote: Can someone please enlighten me as to why the following happens? -2.7^8.6 [1] -5125.407 p- -2.7 q- 8.6 p^q [1] NaN R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to variables and then the

Re: [R] WIERD: Basic computing in R

2008-07-01 Thread Mark Lyman
poolloopus at yahoo.com poolloopus at yahoo.com writes: Can someone please enlighten me as to why the following happens? -2.7^8.6 [1] -5125.407 p- -2.7 q- 8.6 p^q [1] NaN R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are assigned to variables

Re: [R] WIERD: Basic computing in R

2008-07-01 Thread Thomas Lumley
This is FAQ 7.33 -thomas On Tue, 1 Jul 2008, [EMAIL PROTECTED] wrote: Can someone please enlighten me as to why the following happens? -2.7^8.6 [1] -5125.407 p- -2.7 q- 8.6 p^q [1] NaN R seems perfectly able to calculate -2.7^8.6, but fails when the exact same values are