On Tue, Jul 14, 2009 at 1:45 PM, Nair, Murlidharan T wrote:
> I am trying to calculate coordinate transformations and in the process of
> debugging my code using debug I found the following
>
> Browse[1]> direction[i]
> [1] -1.570796
> Browse[1]> cos(direction[i])
> [1] 6.123032e-17
> Browse[1]>
To: Nair, Murlidharan T
Cc: r-help@r-project.org
Subject: Re: [R] Trig functions strange results
FAQ 7.31
This is what happens with floating point number and you are only
printing out 7 digits of precision; look at the results
> cos(-1.570796)
[1] 0.003267949
> cos(-1.5707961)
FAQ 7.31
This is what happens with floating point number and you are only
printing out 7 digits of precision; look at the results
> cos(-1.570796)
[1] 0.003267949
> cos(-1.5707961) # just incrementing the digit that was not displayed
[1] 0.002267949
> cos(-1.5707962)
[1] 0.001267949
>
Nair, Murlidharan T wrote:
>
> I am trying to calculate coordinate transformations and in the process of
> debugging my code using debug I found the following
>
> Browse[1]> direction[i]
> [1] -1.570796
> Browse[1]> cos(direction[i])
> [1] 6.123032e-17
> Browse[1]> cos(-1.570796)
> [1] 3.26794
I am trying to calculate coordinate transformations and in the process of
debugging my code using debug I found the following
Browse[1]> direction[i]
[1] -1.570796
Browse[1]> cos(direction[i])
[1] 6.123032e-17
Browse[1]> cos(-1.570796)
[1] 3.267949e-07
Browse[1]> direction[i]
[1] -1.570796
Browse
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