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About the Company: Edwards Lifesciences (NYSE: EW) is a global leader in products and technologies to treat advanced cardiovascular disease, the global leader in acute hemodynamic monitoring and the number-one heart valve company in the world. Headquartered in Irvine, California, Edwards has more than 5,000 employees worldwide, selling...

Edwards Lifesciences (NYSE: EW) is a global leader in products and technologies to treat advanced cardiovascular disease, the global leader in acute hemodynamic monitoring and the number-one heart valve company in the world. Headquartered in Irvine, California, Edwards has more than 5,000 employees worldwide, selling m...

Statistical Programmer (SAS or Splus/R) About the Company: Edwards Lifesciences (NYSE: EW) is a global leader in products and technologies to treat advanced cardiovascular disease, the global leader in acute hemodynamic monitoring and the number-one heart valve company in the world. Headquartered in Irvine, California, Edwards has more than 5,000 employees'' worldwide...

...software I can also think of a few advantages of R: 1. Based on my personal experiences, simulations requiring a lot of looping seem to run faster. 2. R interfaces with BUGS, for example through BRUGS. 3. The wonderful help list! As always, I am speaking for myself and not necessarily for Edwards Lifesciences. Regards, -Cody Cody Hamilton, PhD Edwards Lifesciences [[alternative HTML version deleted]]

I am migrating the main file servers at work onto a new storage platform based on GPFS. I am using RHEL 5.6 with the samba3x packages (aka 3.5.4) recompiled to get the vfs_gpfs and tsmsm modules, with a couple of extra patches to vfs_gpfs module to bring it 3.5.8 level. It is running with ctdb against Windows AD 2008 R2 domain controllers with all the idmapping been held in the AD. In order to

Hi, I'm trying to convert an old system on Solaris 10 that uses the smbpasswd file authentication method to a system that authenticates against Active Directory. I've managed to get winbind working but of course this just allocates UIDs as it sees fit whereas the smbpasswd file method used the UID from the /etc/passwd file. The user codes on the Solaris server match the user

...ollowing error message: Error in X[[1]] : subscript out of bounds I suspect there may be something wrong with my data.frame (I'm certain there is nothing wrong with datadist()), but I don't know what. Has anyone experienced the mistake I seem to be making? Regards, Cody Hamilton Edwards Lifesciences

...software for statistical analyses and reporting remains high here at my company. Has anyone used R for an official submission to FDA/CDRH? It would be most helpful if I could tell our group that others have been able to use R for this purpose. Regards, Cody Hamilton Staff Biostatistician Edwards Lifesciences

Hi all, The survivals functions can be tested by the Log-rank test and others, for example the Gehan-Breslow. The graham breslow work with the alpha values. But I don't know how is the Gehan-Breslow test with R. Somebody know a type function?.. or other suggestions? Any help will be really appreciated Jos? Bustos Marine Biologist Master Apllied Stat Program University of Concepci?n

I'm working on a program that loads several large data files. I'm using ddply (plyr is really awesome) but I want to minimize the amount of times a large data file is read in. One solution is to keep track of which data file is open with a global variable and then change the currently open data file globally as needed. However, I'm unclear on how to alter a global variable

Dear All, discussing with a statistician of a pharmaceutical company I received this answer about the statistical package that I have planned to use: As R is not a validated software package, we would like to ask if it would rather be possible for you to use SAS, SPSS or another approved statistical software system. Could someone suggest me a 'polite' answer? TIA Giovanni -- dr.

I'm working with large data frames and running out of memory. I hope some of you may be able to suggest a more efficient approach. I have grid/lattice data representing a time series of 1 m2 quadrats in a grassland: Each 1 cm2 cell or pixel contains one ecological state (ie grass or bare ground). The goal is to calculate, for each cell, the transition probabilities to all available

I'm working with a few functions (e.g. do.base.descriptions in the netstat package) that, in addition to returning an object with variables I want to extract, also print output. There is no way to turn this default printing behavior off in many of the functions. Is there a blanket way to suppress such printing, say, within a loop or a ddply statement? Thanks! -Jarrett

Hello, I've been using samba to share files on a Redhat server within a windows NT domain. Recently, security policies in the domain have changed, and security signatures are required for the LanManServer and Rdr services. Now that this has been deployed, I get an error when I try to connect to the SMB shares on the Redhat server from Windows hosts saying "account is not authorized to log

Does anyone know if for clinical studies the FDA would accept statistical analyses performed with R ? Delphine Fontaine

I try to type quickly, and sometimes I make mistakes that cost me more than I think they should... It appears that any time I quickly type a sequence such as: quartz() I am rewarded with the following text in red: 2005-08-24 11:02:42.388 R[2198] *** -[NSCFDate characterAtIndex:]: selector not recognized 2005-08-24 11:02:42.390 R[2198] *** NSTimer discarding exception

Hi all, I'm trying to estimate model parameters in R for a pretty simple system of equations, but I'm having trouble. Here is the system of equations (all derivatives): eqAlgae <- (u_Amax * C_A) * (1 - (Q_Amin / Q_A)) eqQuota <- (p_max * R_V) / (K_p + R_V) - ((Q_A-Q_Amin)*u_Amax) eqResource <- -C_A * (p_max * R_V) / (K_p + R_V) eqSystem <- list(C_A = eqAlgae, Q_A = eqQuota,

I am new to using R and would appreciate some advice on which books to start with to get up to speed on using R. My Background: 1-C# programmer. 2-Programmed directly using IMSL (Now Visual Numerics). 3- Used in past SPSS and Statistica. I put together a list but would like to pick the "best of" and avoid redundancy. Any suggestions on these books would be helpful (i.e. too much

Hello, I might be barking up the wrong tree here, but I want to make sure I have a full understanding of this. What I would like to know is what tests are performed to give the p-values for each variable in the table that is the result of coxph regression when the variables are categorical only. More specifically, when expected counts are less than 5 is the Fisher's exact test used instead

Hello. I would like to estimate the correlation coefficient from two samples with Bootstrapping using the R-function sample(). The problem is, that I have to sample pairwise. For example if I have got two time series and I draw from the first series the value from 1912 I need the value from 1912 from the second sample, too. Example: Imagine that a and b are two time series with returns for