[R] Fw: Generating 3Dplot in lattice package
David Winsemius
dwinsemius at comcast.net
Tue May 3 17:23:56 CEST 2016
> On May 3, 2016, at 3:54 AM, T.Riedle <tr206 at kent.ac.uk> wrote:
>
> Something is wrong here. The formula
>
> pmin(psi/VaR,exp(((abs(B)/Bmax)^w2)*log((psi/VaR),2.718182)))
>
>
> provides a time series. Nevertheless, the returned values are incorrect and it produces NANs.
The only thing we can conclude at the moment is that you have not provided sufficient information. The standard mailing list "sig" is there in an effort to prevent just this situation.
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
--
David.
>
>
>
> ________________________________
> From: William Dunlap <wdunlap at tibco.com>
> Sent: 02 May 2016 20:04
> To: T.Riedle
> Cc: r-help at r-project.org
> Subject: Re: [R] Generating 3Dplot in lattice package
>
> For starters, use 'pmin' (parallel min) instead of 'min'.
>
> substitute(MIN(psi/K14,EXP(((ABS(H14)/peak)^omega)*LN(psi/K14))),
> list(MIN=quote(pmin), K14=quote(VaR), ABS=quote(abs),
> EXP=quote(exp), LN=quote(log), H14=quote(Bmax),
> omega=quote(w2)))
> # pmin(psi/VaR, exp(((abs(Bmax)/peak)^w2) * log(psi/VaR)))
>
>
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com<http://tibco.com>
>
> On Mon, May 2, 2016 at 11:31 AM, T.Riedle <tr206 at kent.ac.uk<mailto:tr206 at kent.ac.uk>> wrote:
> Dear R users,
>
> I am trying to generate a 3D plot using the wireframe() function in the lattice package.
>
> The corresponding formula in Excel looks as follows and is applied to the wireframe() function:
>
> MIN(psi/K14,EXP(((ABS(H14)/peak)^omega)*LN(psi/K14)))
>
> I tried to "translate" this formula in R and the code looks as follows
>
>
> min(psi/VaR,exp(((abs(B)/Bmax)^w2)*log((psi/VaR),2.718182)))
>
>
>
> In this case I get only one value which is NAN but I should get a time series with 13000 values. Hence, I deleted the min() function and tried the wireframe() function:
>
>
> wireframe(inflator~exp((abs(B)/Bmax)^w2)*log((psi/VaR),base=2.718182),data=data_3Dplot)
>
> However, it doesn't work as the formula for the inflator is incorrect. It produces NANs although it shouldn't do that and actually doesn't do that in Excel. Furthermore, the results are totally different to those calculated by Excel.
>
> Can anyone help me with the formula and translate it correctly in terms of R? How do I get the time series? How do I get the values I get in Excel?
>
> I have attached the data as csv file to this email.
>
> Thank you very much for your help.
>
>
> https://stat.ethz.ch/mailman/listinfo/r-help
David Winsemius
Alameda, CA, USA
More information about the R-help
mailing list