search for: henrimon

Dear R Users, I use for my data crunching a combination of MySQL and GNU R. I have to handle huge/ middle seized data which is stored in a MySql database, R executes a SQL command to fetch the data and does the plotting with the build in R plotting functions. The (low level) calculations like summing, dividing, grouping, sorting etc. can be done either with the sql command on the MySQL side or

Dear R users and experts, I need to modify an exisiting R function from a package. The function/ variable is inside a namespace and I have problems accessing it. I only need to get access to to corresponding sourcecode. I localised the "RDX" and "RDB" files. But it seems to be a binary format. How can I convert it to an ASCII format to open and extract the code from a text

Dear R Beginners, Experts and Users, I already asked this question on the R-sig-DB mailing list, but sadly didn't got a reply :-( . Keeping fingers crossed that I have more luck on the main R mailinglist :) . I'm trying to connect to a MySQl database via Gnu R using the RODBC interface. The conenction workes but I get an empty result string. Gnu R and the MySql DB are running on a 64 bit

...056 373.3847 2002.8084 373.3872 2002.8111 373.3897 2002.8138 373.3922 2002.8166 373.3947 2002.8193 373.3971 2002.822 373.3996 2002.8248 373.4021 ------------------------------ Message: 104 Date: Tue, 23 Nov 2010 11:14:05 +1300 From: David Scott <d.scott at auckland.ac.nz> To: Henri Mone <henriMone at gmail.com> Cc: "r-help at r-project.org" <r-help at r-project.org> Subject: Re: [R] cpgram: access data, confidence bands Message-ID: <4CEAEB2D.3000306 at auckland.ac.nz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed On 22/11/10 22:54, Henri Mone wrote:...

Dear R users and experts, I want to fit a shifted parabolic function with the following functional form to my data: f(x)=a0*(x+a1)^2+a2 (a0, a1 and a2 are scaling factors.) What is standard approach to do this in R? I tried the "lm" function in R but I got problems getting the above functional form. Any help is welcome :) . Greetings, Henri

Dear R experts, beginners and everyone else, I'm calculating "cumulative periodogram" using the command "cpgram" [1] from the MASS library. Here is a short example with the "lh" (hormone level) dataset: library(MASS) plot(lh,type="l",ylab="value",xlab="time", main="Hormone Levels (lh)") spectrum(lh,