rnorm.halton
Sorry, but of course. rnorm.halton should be "almost" identical to rnorm (rnorm gives draws from a 0 mean, 1sd Normal). Halton sequences (amongst other things) allow one to draw from the normal in a "more intelligent" fashion when integrating. Using hist, you should see the classic "bell curve" centered around 0. Almost identical to hist(rnorm(1000), plot=TRUE) The 32 bit "version" gives the bell curve. My 64 bit version gives a totally different plot (nothing subtle) ... some times with only positive values for all 100 draws. My 64 bit version of rnorm.halton also often outputs a bunch of NaNs. If both your plots look like a bell curve, the problem is on my machine/end. Thanks very much: do greatly appreciate it. Best, Anirban On Mon, Sep 14, 2009 at 9:31 PM, Steve Lianoglou
<mailinglist.honeypot at gmail.com> wrote:
Hi, On Mon, Sep 14, 2009 at 8:28 PM, Anirban Mukherjee <anirbanm at smu.edu.sg> wrote:
To add: If I try to install using the mac.binary, it tells me (on opening the 64 bit app) that the package is not installed for x64. And does not let me load the library when using 64 bit mode. However, if I install the package from source, then it installs for x64, but gives me weird results. Again: would appreciate if some one could confirm so that I can contact the authors and let them know. I do need Halton normals for some thing I am working on, and I am sitting right on that borderline point where the memory constraints of the 32 bit app are making me lose sleep ...
I wouldn't know what to look for to tell you if it's going wrong or not. I have no idea about anything related to financial modeling and don't have the fOptions package installed anyway. Perhaps if you post the two images you get: i. what you expect to see/what you get from 32bit ii. the wrong image that you're getting from the 64bit version One of us can confirm/deny that we get the same thing. Otherwise, I really can't give you an educated answer w/o having to looking into what this 'halton' stuff is anyway ... So .. help us help you :-) I'm not sitting at a 64 bit machine atm, so hopefully someone else can help you before I get back to school tomorrow ... -steve -- Steve Lianoglou Graduate Student: Computational Systems Biology ?| Memorial Sloan-Kettering Cancer Center ?| Weill Medical College of Cornell University Contact Info: http://cbio.mskcc.org/~lianos/contact
Anirban Mukherjee | Assistant Professor, Marketing | LKCSB, SMU 5062 School of Business, 50 Stamford Road, Singapore 178899 | +65-6828-1932