similar to: listing functions in base package

I'm sure there is a more general way to ask this question but how do you use the elements of a character vector as names of objects in an expression? For example, say you have: a = c(1,3,5,7) b = c(2,4,6,8) n=c("a","b") and you want to use the names a and b in a function (e.g. sum) sum(eval(as.name(n[1])),eval(as.name(n[2]))) works but what is a simpler way to

I have a matrix which has colnames and I would like to send this matrix using sendmailR. How can I convert this simple matrix to a format which can be used as the body variable in sendmailR? I see how I can create a file attachment using mime_part but I would like to send the matrix in the body of the email. The matrix looks like: ABD DEF GHI JKL MNO TOT [1,] 0.44 0.81 1.67 0.37

I am using the getQuote function in the Quantmod package to retrieve the % change for a stock as follows: > getQuote("aapl",what=yahooQF(c("Change Percent (Real-time)"))) Trade Time %Change (RT) aapl 2012-10-11 03:41:00 N/A - -1.67% How can I extract the numeric "change %" which is being returned as a factor so that I can use it in other

I would like to have a function which gets data, does a calculation and prints a result and then waits some number of seconds and repeats. If I use Sys.sleep, the execution is pausing but the function output is buffered so that it all comes out when the function terminates. How can I get output while the function continues to execute?

Can someone please tell me why the following (last line) doesn't work (as I expect it to :-) library(quantmod) a = getSymbols("MSFT",from="2009-3-01") a MSFT eval(as.name(a)) MSFT$MSFT.Adjusted b=paste(a,'$MSFT.Adjusted',sep='') b eval(as.name(b)) Why does this last line not work the way the earlier eval does? Thanks.

I was wondering why the following doesn't work: > a=c(1,2) > names(a)=c("one","two") > a one two 1 2 > > names(a[2]) [1] "two" > > names(a[2])="too" > names(a) [1] "one" "two" > a one two 1 2 I must not be understanding some basic concept here. Why doesn't the 2nd name change to

I was wondering why the following doesn't work: > a=c(1,2) > names(a)=c("one","two") > a one two 1 2 > > names(a[2]) [1] "two" > > names(a[2])="too" > names(a) [1] "one" "two" > a one two 1 2 I must not be understanding some basic concept here. Why doesn't the 2nd name change to

I tried running Pinball.exe (comes with Windows 2000) and got the following message after the Pinball splash screen blinked on the screen for an instant and then exited: fixme:mci:MCI_LoadMciDriver Couldn't load driver for type PINBALL.MID If you don't have a Windows installation accessible from Wine, your perhaps forgot to create a [mci] section in system.ini. I have an [mci] section in

Hi, I would like to use a weighted lm model to reduce heteroscendasticity. I am wondering if the only way to generate the weights in R is through the laborious process of trial and error by hand. Does anyone know if R has a function that would automatically generate the weights need for lm? Thanks, -- Tom [[alternative HTML version deleted]]

Hi, I need to correct for ar(1) behavior of my residuals of my model. I noticed that there are multiple gls models in R. I am wondering if anyone has experience in choosing between gls models. For example, how should one decide whether to use lm.gls in MASS, or gls in nlme for correcting ar(1)? Does anyone have a preference? Any advice is appreciated! Thanks, -- Tom [[alternative HTML

Hi. I am new to R and facing a problem that I cannot solve. I am writing some basic functions. Then I would like to have a master function that allows me to call one of the functions which I created, but I cannot figure out how to do so. Below is an example. The functions rnormIra and runifIra both seem to work fine. I do not get an error message when entering the definition of the master

I show the file size as 19M on the FTP site. 95MB is the gunzipped size. I suspect something unzipped it as it downloaded, I've seen browsers do that. I also pulled the file personally, and found the sizes lined up: ira at ira-t430:~/Downloads [/dev/pts/1](64/0)$ ls -la samba-4.1.19.tar.gz -rw-rw-r--. 1 ira ira 19558250 Jun 23 20:16 samba-4.1.19.tar.gz ira at ira-t430:~/Downloads

======================================================================= "People often say that motivation doesn?t last. Well, neither does bathing. That?s why we recommend it daily." Zig Ziglar ======================================================================= Release Announcements --------------------- This is the latest stable release of Samba 4.1. Changes

======================================================================= "People often say that motivation doesn?t last. Well, neither does bathing. That?s why we recommend it daily." Zig Ziglar ======================================================================= Release Announcements --------------------- This is the latest stable release of Samba 4.1. Changes

Hi: I need to create many variables at one time,how to do this in R? for eg ,X1,X2.......X100? Thanks~ [[alternative HTML version deleted]]

I thought I'd share this with the list since it appears to provide a quick fix to some memory problems, and I haven't see it discussed in relation to R. To reallocate virtual memory from kernel-mode to user-mode in 32-bit Vista or Windows 7 one can use the increaseuserva boot option value. See http://msdn.microsoft.com/en-us/library/aa906211.aspx On my 4GB Vista machine, R is now able to

Dear R-friends, How do you test the goodness of prediction of a model, when you predict on a set of data DIFFERENT from the training set? I explain myself: you train your model M (e.g. glm,gam,regression tree, brt) on a set of data A with a response variable Y. You then predict the value of that same response variable Y on a different set of data B (e.g. predict.glm, predict.gam and so on).

R 2.8.1 Windows XP I am trying to analyze repeated measures data (the data are listed at the end of this Email message) and I need help to make sure that I have properly specified my model, and would like to know why lmer does not return a p value for Group, my fixed effect. My subjects are divided into two groups (variable GROUP), individual subjects are indicated by the variable SS, Value is

Asterisk Users, I am thinking about selecting CALLWITHUS as my sip provider. Has anybody ever used them? How was the call quality? DTMF Tones issues? Thanks in advance. -John _________________________________________________________________ Gear up for Halo? 3 with free downloads and an exclusive offer. http://gethalo3gear.com?ocid=SeptemberWLHalo3_MSNHMTxt_1

Hi, May be you can try this: obj_name<- load("arun.RData") Pred1<- get(obj_name[1]) Actual1<- get(obj_name[2]) library(reshape2) dat<-cbind(melt(Pred1,id.vars="S1"),value2=melt(Actual1,id.vars="S1")[,3])? # to reshape to long form colnames(dat)[3:4]<- c("Predict","Actual") dat$variable<- as.character(dat$variable) #not that