similar to: Right digits of a floating number

Folks, I have a very basic question. The solution eludes me perhaps because of my own lack of creativity. I am not attaching a fully reproducible session because the issue may well be becuase of the way the data file is, and the data file is large (and I don't know whether I can legally distribute it). If people can suggest things that might be wrong in my data or the way that I am reading it,

Hi r users, I am trying to compute the "moving variance" of a large matrix. I now use a loop but I am looking for a faster solution. Here is a sample of the code. Source= matrix(rnorm(400),ncol=100) variances= matrix(rep(NA,4*100),ncol=100) for (i in 1:80) {variances[,i]=apply(Source[,i:(i+80)],1,var)} any idea? Many thanks in advance. Vincent. -- View this message in context:

Hi R users, I have a matrix "m" of the type: m X4.20.2010 X4.19.2010 X4.16.2010 [1,] 0.008319468 0.00000000 -0.008250825 [2,] 0.005574136 0.01816118 0.073081608 [3,] -0.047830688 0.01612903 -0.030239833 [4,] NA NA NA [5,] 0.008746356 0.02848576 -0.025566107 [6,] -0.007990868 0.00000000 -0.026666667 I want to get the sum of each column. Normally

Hi R-users, I am trying to automate the daily running of a simple R script from Windows 7. >From previous posts, I understand that this needs to be done with the task scheduler. I can schedule my laptop to automatically open R at a certain time, but not to execute a script. Secondary question: how do I save a list of R commands so that they get executed once the file is open? Right now, I

Hi, I am trying to run openssh 3.1p1. But it is giving "Bad packet length" error when I run sshd with default config file. On further investigation I found that the error is coming only for the cipher algorithm "aes128-cbc". Also the error comes only when I don't specify any protocol file (/usr/local/etc/ssh_host_[rd]sa_key) or specify only "protocol 2" files. I

Hi R users, I have a matrix of data similar to: > y=matrix(rnorm(55),ncol=5) I would like to know to which decile each number belongs compared to the numbers in its column. Say y[1,1] is the third decile among y[1:11,1] and y[2,1] is in the second decile I would like get a matrix that would return their ranks in decile, i.e., y[1,1] -> 3 y[2,1] -> 2 Your help is much appreciated!

Hi R-users, I have a csv file that contains weather observation (rows) by days (in columns). I open using: > temp = read.csv("Weather.csv", sep=",") and read: X X1.Jan X2.Jan X3.Jan X4.Jan 1 Min 2 3 4 1 2 Max 6 10 8 6 3 Forecast Min 3 1 1 3 4 Forecast Max 8 7

Hi all, I have noticed incorrect parsing of very small hexadecimal numbers like "0x1.00000000d0000p-987". Such a hexadecimal representation can can be produced by sprintf() using the %a flag. The return value is incorrectly reported as 0 when coercing these numbers to double using as.double()/as.numeric(), as illustrated in the three examples below:

Dear All, could someone please shed some light on the use of the .C or .Fortran function: I am trying load and running on R the following function // psi.cpp -- psi function for real arguments. // Algorithms and coefficient values from "Computation of Special // Functions", Zhang and Jin, John Wiley and Sons, 1996. // // (C) 2003, C. Bond. All rights reserved. // //

Full_Name: D Kreil Version: 2.8.1 and 2.9.0 OS: Debian Linux Submission from: (NULL) (141.244.140.179) Group: Accuracy I understand that most floating point numbers are approximated due to their binary storage. On the other hand, I thought that modern math CPUs used guard digits to protect against trivial underflows. Not true? # integers, no problem > 1+1+1==3 [1] TRUE # binary floating

Full_Name: D Kreil Version: 2.8.1 and 2.9.0 OS: Debian Linux Submission from: (NULL) (141.244.140.179) Group: Accuracy I understand that most floating point numbers are approximated due to their binary storage. On the other hand, I thought that modern math CPUs used guard digits to protect against trivial underflows. Not true? # integers, no problem > 1+1+1==3 [1] TRUE # binary floating

I have noticed that in R 2.5.0, no method of textual output will print a "double" mode quantity with more than 15 digits after the decimal point. From the help page (?print.default) it appears that this is intentional, since digits after the fifteenth may be uncertain. However, fifteen digits after the decimal point are not enough to represent all the values that an IEEE-double can

Unsubscribe -----Original Message----- From: r-help-request at r-project.org Date: Wed, 05 May 2010 12:00:09 To: <r-help at r-project.org> Subject: R-help Digest, Vol 87, Issue 5 Send R-help mailing list submissions to r-help at r-project.org To subscribe or unsubscribe via the World Wide Web, visit https://stat.ethz.ch/mailman/listinfo/r-help or, via email, send a message with subject

Hi! I've been trying to use the Voicemail (and Voicemail2) applications with an SIP Phone (X-Lite, for those who cares), when I use g.711(a/u) codec, it works perfectly with inband (it detects the whole mailbox (in my case 10007)), but not with rfc2833 (in this case, it only detects 107 as the mailbox number). With gsm codec, the inband doesn't work, I guess that's due to the

I have a situation where I am receiving DID calls using Immediate Start Pulse signalling on a Loop Start trunk. The line terminates on a Newbridge Mainstreet 3624 channel bank, which provides battery etc. The channel is converted and routed to Asterisk. The lines are configured as follows: /etc/asterisk/zapata.conf ; Channels 1-24 service MainStreet 3624 channel bank context=infrom-did group=1

To answer my own question for the record: The relevant timing parameters in zaptel.h are #define ZT_MINPULSETIME (15 * 8) /* 15 ms minimum */ #define ZT_MAXPULSETIME (100 * 8) /* 150 ms maximum default, lowered to 100ms */ #define ZT_PULSETIMEOUT ((ZT_MAXPULSETIME / 8) + 50) And the pulse detecion loop that consumes these parameters begins at line 4866 of zaptel.c The

Should utils::ls.str() be updated as: svn diff src/library/utils/R/str.R Index: src/library/utils/R/str.R =================================================================== --- src/library/utils/R/str.R (revision 71879) +++ src/library/utils/R/str.R (working copy) @@ -622,7 +622,7 @@ args$digits.d <- NULL } strargs <- c(list(max.level = max.level, give.attr = give.attr,

Dear R colleagues, I face a seemingly simple problem I couldn't find a solution for myself so far: I have to sum the digits of numbers. Example: 1010 ->2 100100110 -> 4 Unfortunately there seems not to be a function for this task. So my idea was to use sum(x) for it. But I did not figure out how to slice a number to a vector of its digits. Example (continued from above): 1010 ->

James, thanks for the response. I understand now my puzzle. tmp <- data.frame(y1=1:4, f1=factor(c("A", "B", "C", "D"))) tmp$y2 <- NA tmp[1:2, "y2"] <- 2 Does the job. I see that I should add a full column. In my case adding full column of NAs and then adding values, solves my problems. Thanks to all. james.holtman at convergys.com

Hello R users! I have written one function (look at the end), which will ease my work with analysis of data in another programme, for which I need sometimes a special data structure. However I encountered several problems with a created data frame. --------------------------------------------------------------- The data frame (produced from the example at the end) looks like the way I want