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...ts c("a","b","c") and "d" into "abcd"? > paste(c("a","b","c"), "d") of course yields [1] "a d" "b d" "c d" -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...eat them differently. So I need to run the day.of.week function. But day.of.week() doesn't eat a chron object, he insists he wants m,d,y. This seems quite odd. Any idea what I can do? Thanks, -ans. -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

...ata frame: r1 R1 r1 R2 r1 R3 r2 R1 r2 R2 r2 R3 r3 R1 r3 R2 r3 R3 How would I go about doing this? I'm sure there's a clean way to do it but I find myself thinking in loops. -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...c(x[1], y[1], x[2], y[2], x[3], y[3], x[4], y[4], x[5], y[5]) I couldn't think of a clever and general way to write this. I am aware of gdata::interleave() but it deals with interleaving rows of a data frame, not elems of vectors. -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...t openoffice is gpl. I hunted a bit and couldn't find any. Does someone know how we might approach this? Am I correct in thinking that our goal is reading OpenDocument files (http://en.wikipedia.org/wiki/OpenDocument) ? -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...data.frame(prev=fixedup$state.85, new=fixedup$state.86) ) # This is a bad method because it is hardcoded to the specific values # of "year". markov <- table(destination$prev.state, destination$new.state) -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...mated model to do prediction for a new set of x points e.g. xnew <- seq(0,5,.5) We know that the predicted values should be roughly sin(xnew). What I don't know is: how do I use the object `d' to make predictions for xnew? -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

How do I parse a date "yyyymmdd"? I tried asking chron(s, "ymd") but that didn't work. Would the date parsing routines of the Date class of 1.9 grok this? -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

I wondered was people on this list felt about this article: http://www.voxeu.org/index.php?q=node/2363 which talks about the problems of obtaining sound answers in numerical optimisation in settings such as MLE or NLS. -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...answers[i] = pythagorean(fixed.x, y.values[i]) } ? I have read the sapply docs, and don't know how to tell him that the list values that he'll iterate over "fit in" as y.values[i]. -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

I think I have isolated a problem with integration between Sweave and beamer. Could you please see the file: http://www.mayin.org/ajayshah/tmp/bugdemo.Rnw Unfortunately, it uses some of my internal libraries, so you can't run it. When I put it through Sweave, I get: http://www.mayin.org/ajayshah/tmp/bugdemo.tex which is, of course, a generic latex file which you can read and run. When I try to use pdflatex,...

Hi, I did not find any web page about using R in economics and econometrics so far. However, this does not mean that there is none (searching with google for "R" and "economics" gives many pages about economics and a name like Firstname R. Lastname on it ;-)). Does anybody in the list does know such a web page? If not, I will be happy if you, Ajay, could build and

...lked around a bit of it and I'm not able to map the resources to predictable URLs which can then be wget. There's some javascript going on that I'm not understanding. Perhaps someone on the mailing list can think about this? -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...# THIS DOES NOT WORK sprintf("The %s of x is %.0f\n", s, g(x)) } f(c(2,3,4), "median") f(c(2,3,4), "mean") and get the results "The median of x is 3" "The mean of x is 3" -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...t, and cause R to crash. Acepack author and maintainer Rob Tibshirani <tibs at utstat.toronto.edu> has been contacted with this information. This is not a bug with R, but with acepack, and should be closed. Neha Pandey <neha.pandey at gmail.com> Vikram Aggarwal <vikram at mayin.org> -- Vikram Aggarwal: http://www.mayin.org/~aragorn/

...23 > print(nrow(col4)) [1] 88746 Why might I be getting 89,323 and 88,746 obs for two files which `wc' believes are each 89,323 lines long? I checked, and there is no single quote or C-m in either file. -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

...t;High" "Low" "Close" - attr(*, "tsp")= num [1:3] 33240 38582 1 - attr(*, "class")= chr [1:2] "mts" "ts" I wonder what I'm doing wrong. -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

...sage: In merge.zoo(..., all = all, fill = fill, suffixes = suffixes, retclass = "zoo") : Index vectors are of different classes: integer Date Is there an easy workaround; or am I deeply confused; is there a way out? :-) -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.

...2 In other words, how do I force education.man to have a factor with 3 levels - "School" "College" "Beyond" - even though there is no observation in "Beyond". -- Ajay Shah Consultant ajayshah at mayin.org Department of Economic Affairs http://www.mayin.org/ajayshah Ministry of Finance, New Delhi

...h are two plots. Instead it looks like two separate plots. * The x axis is Dates and the axis labelling doesn't get that. How do I set about making a pretty panel plot of these two series, both of which share a common time axis? -- Ajay Shah http://www.mayin.org/ajayshah ajayshah at mayin.org http://ajayshahblog.blogspot.com <*(:-? - wizard who doesn't know the answer.