[R] FW: Questions related to R- Credit Risk

I am a new user of R software, and at the moment I am interested in applying "R" to calculate Credit Risk measures. I have already been in contact with Andreas Wittmann (responsible for CreditMetrics package). Nevertheless, there are some doubts that I have which Andreas could not help me. Is

[R] To export results

Hi I am new to this software, Please tell me how to save the result to a word or text format from R console. For example, if I run a regression, and I want to save the result in the word what should I do for that. Please do reply for my query. Thanks Arun Sathiya. -- View this message in conte

[R] [R-pkgs] micEcon split into miscTools, micEconAids, and micEcon

The "micEcon" package has been split into three packages: miscTools, micEconAids, and micEcon. a) miscTools (version 0.6-0) includes miscellaneous small tools and utilities that are not related to (micro)economics, e.g. colMedians(), rowMedians(), insertCol(), insertRow(), vecli(), symMatrix(), tr

[R] Inverse matrix

Dear All, Let A is a matrix which is: A <- matrix(c(1,2,3,4),nrow=2) How could we find the inverse of A? I try to use ginv(A), but it didn't worked. Thanks Fir __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

Re: [R] Inverse matrix

Try: solve(a) On Mon, Dec 28, 2009 at 8:53 AM, FMH wrote: > Dear All, > > Let A is a matrix which is: > A <- matrix(c(1,2,3,4),nrow=2) > > How could we find the inverse of A? I try to use ginv(A), but it didn't > worked. > > Thanks > > Fir > > __ > R-

[R] WHO Anthro growth curve macros and R

Hi all, I've got a project where I have to calculate weight-for-age Z-scores, preferably using the WHO standards. WHO have been very nice to publish macros for doing this in both STATA,SPSS, SAS and Splus formats (see http://www.who.int/childgrowth/software/en/), but for some reason have chosen n

Re: [R] anova

Dear friends, I have run an ANOVA using a linear variable as dependent and a nominal variable with five groups as independent (factor). The F test is statistically significant F(4, 431)=2.54, p=0.036.However, the multiple comparisons have shown no difference between any two groups (no matter w

[R] Matrix to list object

let consider following matrix : mat <- matrix(rnorm(45), 15) Now I want to convert it to a list object "mat_list", which will have 15 elements and each element will again be a matrix with 3 rows and 3 columns. How can I do that? Thanks, -- View this message in context: http://n4.nabble.com/

Re: [R] To export results

> write.table(x2, "filename.txt", col.name=FALSE, row.name=FALSE) # where x2 = variable you want to save Muhammad Rahiz | Doctoral Student in Regional Climate Modeling Climate Research Laboratory, School of Geography & the Environment Oxford Universi

Re: [R] Matrix to list object

Try this: mat_list <- lapply(split(mat, seq(nrow(mat))), matrix, ncol = 3) On Mon, Dec 28, 2009 at 9:20 AM, Ron_M wrote: > > let consider following matrix : > > mat <- matrix(rnorm(45), 15) > > Now I want  to convert it to a list object "mat_list", which will have 15 > elements and each element

[R] auto regression

I need to check if there is an auto regression in the data that I have. I did find 'R functions for regression analysis', but I can't find the 'right' one for me in there. What would be the correct command to use in this case? Thanks, EZ [[alternative HTML version deleted]]

[R] graph shading is overlaying axes

How can I resolve this problem?... As a general example, plot (1:4) polygon(c(0,0,5,5),c(0,5,5,0), border="lavenderblush1", col = "lavenderblush1") ###see how this overlays the axes lines #I have tried... for (k in 1:4) axis(k, lwd.ticks=0, label=F) #...but this misses the corners Any suggest

Re: [R] Help with Moving Average in R

thanks, man. And what a stupid mistake!!! Plus, do you know any package in R that perform good rolling estimation? -- View this message in context: http://n4.nabble.com/Help-with-Moving-Average-in-R-tp989627p989764.html Sent from the R help mailing list archive at Nabble.com. _

Re: [R] graph shading is overlaying axes

Try this: plot (1:4) polygon(c(0,0,5,5),c(0,5,5,0), border="lavenderblush1", col = "lavenderblush1") ###see how this overlays the axes lines box() On Mon, Dec 28, 2009 at 6:38 AM, Dean1 wrote: > > How can I resolve this problem?... > > As a general example, > plot (1:4) > polygon(c(0,0,5,5),c

Re: [R] R and Finance - EAD, LGD, PD

Thanks Liu, You are right, my concerning is Basel II, and I was wondering to find a R package for this. But I also can't find any package. By the way, since I'm in banking industry, I need to use the portfolio approach. Any other hints still welcome. Rick From: Wensui Liu Sent: Sunday, Decem

Re: [R] Modified R Code

For your problem A, why do you want to create so many variables? Leave the data in the 'newrate' list and reference the information from there. It will be much easier. Think about the data structures that you want to work with, especially if you have a variable number of objects/files that you a

Re: [R] Modified R Code

Dear Sir, Thanks a lot for your guidance. Definitely I will go through lists. The no of variables for any given rate say rate1 are three different ranges. e.g. rate1 has three ranges Range1  = (1.05 - 1.30) Range2  = (1.30 - 1.65) Range3 = (1.65 - 1.99) Likewise rate2 has three r

Re: [R] Modified R Code

I would still think you should look at lists. For example, your ranges could be specified with: > ranges <- list(list(c(1.05, 1.3), c(1.3,.65), c(1.65, 1.99)), +list(c(2.05, 2.3), c(2.3, 2.65), c(2.65, 2.99))) > > ranges [[1]] [[1]][[1]] [1] 1.05 1.30 [[1]][[2]] [1] 1.30 0.65

Re: [R] To export results

On Dec 28, 2009, at 12:19 AM, sathiya_mtm wrote: Hi I am new to this software, Please tell me how to save the result to a word or text format from R console. For example, if I run a regression, and I want to save the result in the word what should I do for that. Please do reply for my

[R] Ops method does not dispatch on either of two classes

I have defined boolean methods for bit and bitwhich objects, for example |.bit <- function(e1,e2) and |.bitwhich <- function(e1,e2) Both methods coerce their arguments to the respective class, however if I do something like bit_obj | bitwhich_obj then I get a warning Warning message: Incompa

[R] Help With Custom QQ Plot

Good Morning: I have attached a text file with one hundred thirty six observations. I would like to create a qq plot with the following features: 1. Observed values on the y-axis. 2. Normal approximation line on the plot. 3. X-axis with vertical reference lines at the following percentiles of th

Re: [R] anova

This email list is about R, not introductory statistics. But the answer to your question is: reject the 4 df hypothesis that the population means of the 5 groups are all equal. Retain each single df hypothesis about pairwise population mean differences. -Ista On Mon, Dec 28, 2009 at 6:02 AM, Iaso

Re: [R] [BioC] make.cdf.package: Error: cannot allocate vector of size 1 Kb

My machine has 8GB memory. I had quit all other programs that might take a lot of memory when I try the script (before I post the first message in this thread). The cdf file is of only 741 MB. It is strange to me to see the error. On Mon, Dec 28, 2009 at 2:38 AM, Wolfgang Huber wrote: > Dear Peng

[R] How to change the default Date format for write.csv function?

Hi, I have a data.frame containing a Date column. When using write.csv() function to generate a CSV file, I always get the Date column formatted as "-MM-DD". I would like to have it formatted as "MM/DD/", but could not find an easy way to do it.Here is the test code: d <- data.

Re: [R] Help with Moving Average in R

On 28-12-2009, at 13:53, Saji Ren [via R] wrote: > thanks, man. And what a stupid mistake!!! > My pleasure. > Plus, do you know any package in R that perform good rolling estimation? > No. But I did a search on "rolling estimation" in the R-help mailing list on Nabble and found this http

Re: [R] How to change the default Date format for write.csv function?

try this: d <- data.frame(ticker=c("IBM", "IBM"), date = as.Date(c("2009-12-03", "2009-12-04")), price=c(120.00, 123.00)) # convert to your desired format d$mydate <- format(d$date, "%m/%d/%Y") write.csv(subset(d, select=-date), file="C:/temp/test.csv", row.names=FALSE) On Mon, Dec 28, 2009 at 1

Re: [R] How to change the default Date format for write.csv function?

Try this: newD <- replace(d, sapply(d, function(x)inherits(x, "Date")), format(d[sapply(d, function(x)inherits(x, "Date"))], "%m/%d/%Y")) write.csv(newD, file="C:/temp/test.csv", row.names=FALSE) On Mon, Dec 28, 2009 at 1:19 PM, wrote: > Hi, > > I have a data.frame containing a Date column.  Wh

Re: [R] How to change the default Date format for write.csv function?

Try this: > write.csv(transform(d, date = format(date, "%m/%d/%Y"))) "","ticker","date","price" "1","IBM","12/03/2009",120 "2","IBM","12/04/2009",123 On Mon, Dec 28, 2009 at 10:19 AM, wrote: > Hi, > > I have a data.frame containing a Date column.  When using write.csv() > function to generate

Re: [R] WHO Anthro growth curve macros and R

Gustaf, I would be advisable to first check that such z scores are valid statistically (I have my doubts). They make a number of assumptions, chief among them being that un-normalized weight is not a proper physiologic summary. It is almost always the case that joint modeling of age and wei

Re: [R] graph shading is overlaying axes

Thanks, this solves the problem -- View this message in context: http://n4.nabble.com/graph-shading-is-overlaying-axes-tp989750p989787.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz

[R] apply loop - using/providing a data frame to loop over

Hi, I want to extract individual names from a single string that contains all names. My problem is not the extraction itself, but the looping over the extraction start and end points, which I try to realize with apply. #Say, I have a string with names. authors=c("Schleyer T, Spallek H, Butler BS,

[R] refering to the 'boundaries' of a graph

Please see this code for a demonstration of my problem... xlim <- c(-1,5) plot(1:4, xlim=xlim) abline(v=xlim[1]) abline(v=xlim[2]) When I refer to xlim, it is not referring to the boundaries of the graphical region, it refers to the maximum and minimum xticks. My question is how can I refer to

Re: [R] WHO Anthro growth curve macros and R

On Mon, 28 Dec 2009, Gustaf Rydevik wrote: Hi all, I've got a project where I have to calculate weight-for-age Z-scores, preferably using the WHO standards. WHO have been very nice to publish macros for doing this in both STATA,SPSS, SAS and Splus formats (see http://www.who.int/childgrowth/so

Re: [R] How to change the default Date format for write.csv function?

Hi, This problem might be a little harder than it appears. I receive a few emails all suggesting that convert the Date field to character by calling format(date, "%m/%d/%Y") in one way or another. Well, this is not the solution I'm looking for and it doesn't work for me. All the date fields

Re: [R] refering to the 'boundaries' of a graph

Try this: par("usr") give the boundaries. abline(v = par("usr")[1], col = "red", lwd = 2) abline(v = par("usr")[2], col = "red", lwd = 2) On Mon, Dec 28, 2009 at 11:55 AM, Dean1 wrote: > > Please see this code for a demonstration of my problem... > > xlim <- c(-1,5) > plot(1:4, xlim=xlim) > abl

Re: [R] apply loop - using/providing a data frame to loop over

Try this. It picks out each string of word characters (\w+) followed by a space followed by a word character: > library(gsubfn) > strapply(authors, "\\w+ \\w", c)[[1]] [1] "Schleyer T" "Spallek H" "Butler B""Subramanian S" [5] "Weiss D" "Poythress M" "Rattanathikun P

Re: [R] How to change the default Date format for write.csv function?

Use the quote argument: write.csv(d, file="C:/temp/test.csv", row.names=FALSE, quote = FALSE) On Mon, Dec 28, 2009 at 2:17 PM, wrote: > Hi, > > This problem might be a little harder than it appears. > > I receive a few emails all suggesting that convert the Date field to > character by calling

Re: [R] How to change the default Date format for write.csv function?

Nice try, but that will turn off quote for all fields. I want quotes for text fields, and no quotes for date and numeric fields. Please see the desired CSV output in my previous email. George From: Henrique Dallazuanna To: george@bnymellon.com Cc: r-help@r-project.org Date: 12/28/200

Re: [R] How to change the default Date format for write.csv function?

Try this: cat('"', paste(names(newD), collapse = '","'), '"\n', sep = '', file = 'temp.txt', append = TRUE) cat(paste(apply(newD, 1, function(l)paste('"', l[1], '",', l[2], ',', l[3], sep = "")), collapse = "\n"), file = 'temp.txt', append = TRUE) Using newD object from my prev

Re: [R] [BioC] make.cdf.package: Error: cannot allocate vector of size 1 Kb

Peng Yu wrote: > My machine has 8GB memory. I had quit all other programs that might > take a lot of memory when I try the script (before I post the first > message in this thread). The cdf file is of only 741 MB. It is strange > to me to see the error. For me this tops out at about 13 gigs. The

Re: [R] apply loop - using/providing a data frame to loop over

Try this: mapply(substr, x = authors, start = starts, stop = ends) On Mon, Dec 28, 2009 at 10:46 AM, Daniel Malter wrote: > Hi, > > I want to extract individual names from a single string that contains all > names. My problem is not the extraction itself, but the looping over the > extraction st

Re: [R] apply loop - using/providing a data frame to loop over

Works a charme, thanks. Daniel - cuncta stricte discussurus - -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Gabor Grothendieck Sent: Monday, December 28, 2009 12:34 PM To: Daniel Mal

[R] What might be the security issues from installing R?

I work in a US government office, where regular computer users are not allowed Admin access to their computers, and all software must go through an extensive evaluation to be approved for installation and use. Several of us in my office would greatly benefit from R, so I'd like to request that

[R] 2D array of strings

Sorry for the dumb question, but I couldn't figure this out myself. Consider the following: > str <- c("abc","def") > array(str, c(2,1)) [,1] [1,] "abc" [2,] "def" How can i obtain the outcome of the second instruction without specifying the number of rows? Thank you in advance, Francesco.

Re: [R] What might be the security issues from installing R?

On Dec 28, 2009, at 12:23 PM, Peterson, Eric B. wrote: I work in a US government office, where regular computer users are not allowed Admin access to their computers, and all software must go through an extensive evaluation to be approved for installation and use. Several of us in my offic

Re: [R] 2D array of strings

matrix(str, ncol=1) Francesco Napolitano wrote: Sorry for the dumb question, but I couldn't figure this out myself. Consider the following: str <- c("abc","def") array(str, c(2,1)) [,1] [1,] "abc" [2,] "def" How can i obtain the outcome of the second instruction without specifying the

Re: [R] How to change the default Date format for write.csvfunction?

> -Original Message- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of > george@bnymellon.com > Sent: Monday, December 28, 2009 8:18 AM > To: r-help@r-project.org > Subject: Re: [R] How to change the default Date format for > write.csvfunction

Re: [R] 2D array of strings

Hi Francesco, Be carefull with create a object named str, because you crash str() function. I don't know if it have implications on any package or functions. bests milton On Mon, Dec 28, 2009 at 4:32 PM, Francesco Napolitano wrote: > Sorry for the dumb question, but I couldn't figure this out

Re: [R] refering to the 'boundaries' of a graph

I think what you are encountering is a standard R default. R, by default, adds 4% to the axes. I suspect that this is to avoid graphing points right on the x or x axis and thus obscuring them. Have a look at ?par xaxs for more information and how to change the default. --- On Mon, 12/28/

[R] nls error message

When I try to run the following non-linear regression with variables index1 and prl3: > beta = 4 > nls(index1~beta*(1/prl3),start = list(beta = 4)) I get this error message: Error in nls(index1 ~ beta * (1/prl3), start = list(beta = 4)) : REAL() can only be applied to a 'numeric', not a 'lo

[R] accessing members of a data.frame

I have the following code fileList <-list.files(path = ".", pattern = "[^a-z].txt$", all.files = FALSE, full.names = FALSE, recursive = FALSE, ignore.case = FALSE) for (x in 1:length(fileList)){ fileLines <- data.frame(read.table(fileList[x])) print(string) } the lines of the file all hav

Re: [R] How to change the default Date format for write.csvfunction?

You can use a numeric value for the quote= argument to write.table to specify which columns should have quotes. d <- data.frame(ticker=c("IBM", "IBM"), date = as.Date(c("2009-12-03", "2009-12-04")), price=c(120.00, 123.00)) d1 <- as.data.frame(lapply(d, function(x) if (is(x, "Date")) format(x,

[R] Accessing members

Consider the following > fileLines V1 V2V3V4 V5 V6V7 V8 1 AB 20091224 156.0 156.0 154.00 154.0055 1198 2 AB.C 20091224 156.0 156.0 156.00 156.00 0 0 3 ABF10 20091224 156.0 156.0 156.00 156.0055444 4 ABH10 20091224 156.0 156.0 1

Re: [R] What might be the security issues from installing R?

On Mon, Dec 28, 2009 at 6:23 PM, Peterson, Eric B. wrote: > My guess is that we may run into problems due to R being open-source, leading > to a potential perception that the code might be poorly controlled. This > could be further complicated by the need for downloading additional > open-sour

Re: [R] Accessing members

Hi Nick, Your first column is being stored as a factor. You can either take care when creating the matrix to keep the values in this column as characters, or you might want to convert the result using as.character(). HTH, Tom On Dec 28, 2009, at 1:14 PM, Nick Torenvliet wrote: Conside

Re: [R] Accessing member

Assuming the data set is called xx subset (xx, xx$V1=="AB") or xx[1,] if you now AB is the first row of the data. --- On Mon, 12/28/09, Nick Torenvliet wrote: > From: Nick Torenvliet > Subject: [R] Accessing members > To: r-help@r-project.org > Received: Monday, December 28, 2009, 6:

Re: [R] Have you used RGoogleDocs and RGoogleData?

Dear Adrian Are you able to help me with problems that I am having with RGoogleData? I would greatly appreciate it if you could give me some general trouble shooting ideas or better yet if you could fix the problem. I believe that I updated to the latest version of RGoogleData as evidenced by >

Re: [R] Help With Custom QQ Plot

Hello Dennis: Thanks for the reply and for your help. I apologize for the errant TUS in the data. Your statement about the quantiles of the data belonging to the vertical axis is correct of course and it helped me realize an error of mine: the quantiles plotted as vertical reference lines are f

Re: [R] accessing members of a data.frame

?read.csv On Mon, Dec 28, 2009 at 5:31 PM, Nick Torenvliet wrote: > I have the following code > > fileList <-list.files(path = ".", pattern = "[^a-z].txt$", all.files = > FALSE, full.names = FALSE, recursive = FALSE, ignore.case = FALSE) > for (x in 1:length(fileList)){ >fileLines <- data.fra

[R] subsetting by groups, with conditions

I have a data set similar to this: P1idVeg1Veg2AreaPoly2 P2ID 1 p p 1 1 1 p p 1.5 2 2 p p 2 3 2 p h 3.5 4 For each group of "Poly1id" records, I wish to ou

Re: [R] 2D array of strings

On Dec 28, 2009, at 4:24 PM, milton ruser wrote: Hi Francesco, Be carefull with create a object named str, because you crash str() function. I don't know if it have implications on any package or functions. Agree that is not a good idea, but don't agree with why. The action of creating a

Re: [R] subsetting by groups, with conditions

try this: > x <- read.table(textConnection("P1idVeg1Veg2AreaPoly2 P2ID + 1 p p 1 1 + 1 p p 1.5 2 + 2 p p 2 3 + 2 p h 3.5 4"), header=TRUE, as.is=TRUE) > # split t

Re: [R] subsetting by groups, with conditions

Assuming your data frame is called DF we can use sqldf like this. The inner select calculates the maximum AreaPoly2 for each group such that Veg1 = Veg2 and the outer select returns the corresponding row. library(sqldf) sqldf("select * from DF a where AreaPoly2 = (select max(AreaPoly2) fro

Re: [R] subsetting by groups, with conditions

On Dec 28, 2009, at 7:03 PM, Seth W Bigelow wrote: I have a data set similar to this: P1idVeg1Veg2AreaPoly2 P2ID 1 p p 1 1 1 p p 1.5 2 2 p p 2 3 2 p h 3.5

Re: [R] Accessing members

This is a result of how R treats factors. There's more than one way to do what I think you're asking for. I've constructed a smaller version of your data frame to illustrate one quick way if that's all you need: > smdat<- > data.frame(V1=c("AB","AB.C","ABF10"),V2=rep("20091224",3),V3=rep(156.0

Re: [R] Accessing members

On Dec 28, 2009, at 5:14 PM, Nick Torenvliet wrote: Consider the following fileLines V1 V2V3V4 V5 V6V7 V8 1 AB 20091224 156.0 156.0 154.00 154.0055 1198 2 AB.C 20091224 156.0 156.0 156.00 156.00 0 0 3 ABF10 20091224 156.0 156.0 156

[R] ggplot2, building a simple formula interface

I¹m trying to build a simple formula interface to work with a function using ggplot2. The following scheme ³works² up until the plot(p) request, at which point there are complaints about xlim¹s and a blank graphics window. Looking at str(p) I do see the limits are NULL, plus layer 1 claims to have

Re: [R] anova

You may need to look at some other contrasts than the pairwise. For example, 3(x.bar_A + x.bar_B) - 2(x.bar_C + x.bar_D + x.bar_E) __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http:

Re: [R] Accessing members

Thanks everyone... the as.character(fileLines[1][1]) solution worked well... Factors??? the treatment is so far away from what I know. Cool though... On Mon, Dec 28, 2009 at 8:55 PM, David Winsemius wrote: > > On Dec 28, 2009, at 5:14 PM, Nick Torenvliet wrote: > > Consider the following

[R] error logging

Yet another question... I'm wondering if there is a built in facility to log errors. I've got this statement that gives me verbose DBI errors as they come up (to standard output), but I'd like to trap and log them to a file as I running about 300 sql statements through this particular piece

Re: [R] error logging

Try this: logfile <- file("logfile") open(logfile, "w") sink(logfile, type = "message") 1/"a" # generate an error On Mon, Dec 28, 2009 at 11:11 PM, Nick Torenvliet wrote: > Yet another question... > > I'm wondering if there is a built in facility to log errors.   I've got this > statement that

Re: [R] error logging

Beauty thank-you... I'm crashing but I'll check that out in a couple when I get back. Must go snowboarding tomorrow! On Mon, Dec 28, 2009 at 11:20 PM, Gabor Grothendieck < ggrothendi...@gmail.com> wrote: > Try this: > > logfile <- file("logfile") > open(logfile, "w") > sink(logfile, type = "mess

[R] R2

Hi everyone, I tried to write the code of computing R2 for a regression system but I failed. This is the code I use for computing RMSE: my_svm_model <- function(myformula, mydata, mytestdata) { mymodel <- svm(myformula, data=mydata) mytest <- predict(mymodel, mytestdata

[R] how can I use R functions in Fortran 90

Hi all, Is there a way that I can import R functions into Fortran? Especially, I want to generate random numbers from some not-so-common distributions (e.g. inverted chi square) but did not find any routines written in Fortran that deal with distributions other than uniform and normal. Thanks. An

Re: [R] how can I use R functions in Fortran 90

You can read the manual below. good luck! http://www.biometrics.mtu.edu/CRAN/doc/manuals/R-exts.html#The-R-API For example, suppose we want to call R's normal random numbers from FORTRAN. We need a C wrapper along the lines of #include void F77_SUB(rndstart)(void) { GetRNGstate();