similar to: The variables combined in a table from other table and combination questions

Dear all: I am a new R-user and I have 2 questions about it. 1) I need to find specific sub-dataframe, and then use specific column to calculate. For example, after splitting dataframe, I find specific the sub-dataframe, such as ?A.split [1]?. But, I don?t know how to find ?time? and ?concentration? columns of ?A.split [1]?. 2) The equation used to sub-dataframe is

Dear R-users: I am a new R-user and I have a question about lm function. Here is my data. a<-c(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14) b<-c(1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2) c<-c(2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2) d<-c(2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1)

Dear all: I am a new R-user and I have 2 questions about it. 1) I have a dataframe. Based on ?formulation? and ?subject?, a dataframe is split into 4 dataframes. The example is as follows. Moreover, I want to calculate ?test? value for these 4 dataframes. My question is that the ?test? values not correct and I do not know where the problem is. 2) There are 12 ?test? (y) values from

Dear all: I ?m a newer. I have some problem when I check my package. The error messages were as follows. It shows that the problem is about Rd file. How can I find where the error is? How can I do?? c:\temp>Rcmd check bear * checking for working pdflatex ... OK * using log directory 'c:/temp/bear.Rcheck' * using R version 2.7.0 (2008-04-22) * using session charset: CP950 *

Greetings to all. I am currently a bit of a newbie in regards using Linux and Samba. I have worked for several years in the IT/digital divide sector of the nonprofit world (particularly in regards to utilizing used and refurbished hardware). I am have a couple of CompTIA certs. (A+ and N+) and some experience administering Windows 2000 Advanced Server. Anyway to my question.... I am

responses to the Exception Handling Proposal are "all over the map", including at least.... 1. what are the semantics of the various high level languages, and how are these constructs to be lowered into an IR 2. what should the IR be 3. what should the final output code format and layout be, and to what extent can/should this be compatible with any existing runtime environments

On 06/10/2010 08:16 PM, Chris Pearce wrote: > I have no plans to change the 'index' packet format further. I have proposed an alternative formulation of the index packet at http://github.com/bemasc/OggIndex/blob/master/Proposed-modified-spec.txt That repository also contains a working implementation of the alternative formulation. I have reviewed the details with Chris extensively.

Hi Chad, On Aug 6, 2013, at 7:46 AM, Chad Rosier <chad.rosier at gmail.com> wrote: > All, > I have some code that looks like the following: > > { > double a, b, c; > for (...) { > ... > a = lots of FP math; > b = lots of FP math; > c = lots of FP math; > if (cond) { > a = 0.0; > b = 0.1; > c = 0.2; >

Thanks, Mark. I will give the paper a look. On Tue, Aug 6, 2013 at 1:42 PM, Mark Lacey <mark.lacey at apple.com> wrote: > Hi Chad, > > On Aug 6, 2013, at 7:46 AM, Chad Rosier <chad.rosier at gmail.com> wrote: > > > All, > > I have some code that looks like the following: > > > > { > > double a, b, c; > > for (...) { > >

In the almost current development version (2009-05-22 r48594) and also in https://svn.r-project.org/R/trunk/src/library/base/man/factor.Rd ?factor contains (compare the formulations marked by ^^^^^^) \section{Warning}{ The interpretation of a factor depends on both the codes and the \code{"levels"} attribute. Be careful only to compare factors with the same set of levels (in

Can someone verify for me if the for loop below is really calculating the nonzero min for each row of a matrix? I have a bug somewhere in the is section of code. My first guess is how I am find the the nonzero min of each row of my matrix. The overall idea is to make sure I am investing all of my money, i.e. new.set is a set of indicator variables for each stock for a particular portfolio, i.e.

Dear list: I am interested in the following sort of problem, as is found frequently in the field of QSAR. I have biological activity as a function of chemical structure, with structure defined in a categorical manner in that the SUBSTITUENT is the levels of the POSITION factor. For example, data from Kubinyi (http://www.kubinyi.de/dd-12.pdf) for this type of analysis is presented as follows:

Dear All   I know that you do not have to help me (as this is not a pure R problem) but please do, i am new to R as a CPI compiler, i just need to do a sample to see which sampling method best works in different situations, therefore since this is for practice purposes nobody will finance a real project thats why i need you to help me direct me as to how simulate data (just direct me,not 100%

Hello list reader, I am trying to form some constraints for an optimization I am working on. I think I have understand the use of the constraints in matrix form. I use them like: constr_mat<- -diag(2) constr_vec<- rep(-0.05,2) constr_mat<- rbind(constr_mat, diag(2)) constr_vec<- c(constr_vec, rep(-1, 2)) To get parameters in the interval [-1, 0.05]. (And this works so far) Now I

Hello people! I just formatted my disk, and I have installed R 2.14 over. Now I am trying to restore my packages and all. I realized that tikzDevice, a crucial package for me is gone. Fortunately, I have kept my old, non-zipped, tikzDevice folder, but none of the commands I know seems to handle this [i.e. load() and install.packages()]. Thus the formulation is like this: how to install a

On Sun, Feb 5, 2017 at 12:25 PM, Nuno Lopes <nunoplopes at sapo.pt> wrote: > Hi Daniel, > > Many thanks for working on this! > SSI/e-SSA is the only way I'm aware of for doing efficient sparse > analyses, so I'm definitely in favor of adding support for it in LLVM! > > I read the discussion so far and did a cursory review of the patches, and > I have just a

Hello all, I am interested in simulating 10,000 2 x 3 tables for SNPs data with the Hardy Weinberg formulation. Is there a quick way to do this? I am assuming that the minor allelle frequency is uniform in (0.05, 0.25). -- Thanks, Jim. [[alternative HTML version deleted]]

Dear R developers, I was looking for a function analogous to base::diag() for getting and setting bands of a matrix. The closest I could find was Matrix::band(), but this was not exactly what I wanted for two reasons. Firstly, Matrix::band() returns a matrix rather than just the specified band. Secondly, Matrix::band() cannot be used for setting the values for a matrix band. Setting or

Dear all I have two 10*10 matrixes and I would like to compare theirs contents. By the word content I mean to check visually (not with any mathematical formulation) how similar are the contents. I also know edit that prints my matrix in the scree but still one edit blocks the prompt to launch a second edit() screen. What is the best way to compare these two matrices? I would like to thank you

Hi, I am using R in one of my courses. I am trying to use R's linprog package to solve to formulate 2-class classification problem as Linear programming problem. For my formulation, I need to set to "cvec" to all 0s. I know the points are linearly separable so an optimal solution "x" does exist, which satisfies all the constraints. But given the constraints and setting