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Hello, Your problem is y=bX+epsilon It can be transformed into: epsilon^2=(y-bX)^2 Standard (unconstrained) regressions are about minimizing the variance of epsilon, ie (y-bX)^2. In your case, you need to minimize again the...

Hello, The copula function will give you random numbers that are marginally following a uniform distribution on [0,1]. Then you need to apply to those numbers the inverse of the cumulative distribution you think that mimic the best your...

I'm interested in this "2D line fitting" too! I've been looking, without success, in the list of R packages. It might be possible to implement quite easily some of the formalism that you can find in Numerical Recipes...

Hi Mario, I've just started with R in some small in-house projects. Thanks for the listed books, i think the #2 and #3 is best describe my situation here. Best regards, Jack Le -----Original Message----- From: "Mario" <mario...

Hi there. Thanks for your time in advance. My final goal is to calculate 1/2*integral of (f1(x)^1/2-f2(x)^(1/2))^2dx (Latex codes: $\frac{1}{2}\int^{{\infty}}_{\infty} (\sqrt{f_1(x)}-\sqrt...

Hi the list, I am experiencing several issues with profile.mle (and consequently with confint.mle) (stat4 version 2.9.2), and I have to spend a lot of time to find workarounds to what looks like interface bugs. I...

Dear all, I've stumbled a similar issue with the package cluster when compiling the 3.4.0 version with the settings of Fedora RPM specs. Compiling R with the default setting of configure yields a version that works for...

Hi the list, A new version (0.92) of my package 'noia' will be available soon on CRAN mirrors, and I think it might be a good opportunity to introduce it shortly to the R community. In summary: 'noia' will...

Hi the list, A new version (0.92) of my package 'noia' will be available soon on CRAN mirrors, and I think it might be a good opportunity to introduce it shortly to the R community. In summary: 'noia' will...

Hi there. Thanks for your time in advance. I am using R 2.2.0 and OS: Windows XP. My final goal is to calculate 1/2*integral of (f1(x)^1/2-f2(x)^(1/2))^2dx (Latex codes...

Hi, David and Douglas, thanks for the effort in helping me. It seems that deparse(match.call()) is doing the trick. I learned that the class "call" is not easy to handle in R. Samuel -----Original Message----- From: David Winsemius...

Hello, you can find a text copy of the previous emails below. I have already found a solution for my problem, but thanks for your reply. Thanh > Gesendet: Dienstag, 10. Oktober 2017 um 13:21 Uhr > Von: "Dirk Eddelbuettel" <edd...

Exactly. My formula holds only for k=1, this is how I generated it. Do you have any references concerning the " rather more careful algorithms"? Thanks, Samuel -----Original Message----- From: peter dalgaard [mailto:pdalgd at gmail.com] Sent: 01 August...

Hi, You need to be careful with -Inf and Inf in R, I suppose they are some large numbers arbitrarily chosen by R, but not infinite quantities. So the function integrate can return errors if the function to integrate doesn...

I think your asset returns are not supposed to be in percentage, so you should use c(0,0.10,-0.10,-0.01,0.01,0.02) instead. Samuel -----Original Message----- From: r-sig-finance-bounces at stat.math...

Dear Roger, Thank you for your answer, (And sorry for the HTML posting). The issue persists if I specify "GE" for the lower bound, but only when the parameter latlong is set to TRUE (see example below). Regarding the nature...

Thank you Roger, Your patched version now works as expected! And thank you for your suggestions, I am currently looking into all of that. Best Ma?l On 12/04/2017 09:00, Roger Bivand wrote: > On Wed, 12 Apr...

I think you should also set header=TRUE in read.table. Samuel -----Original Message----- From: r-sig-finance-bounces at stat.math.ethz.ch [mailto:r-sig-finance-bounces at stat.math.ethz.ch] On Behalf Of Joshua Ulrich Sent...

Hi, I'm using a loop to evaluate several models by taking adjacent variables from my dataframe. When i try to get predictions for new values, i get an error message about a missing variable in my new dataframe. Below...

Hi the list, Sorry if this is a FAQ, I could not find anything corresponding in the archive of the list. Along with some colleagues, we were wondering if there was a simple way to customize the design matrix of...