search for: tranforms

Displaying 20 results from an estimated 85 matches for "tranforms".

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2012 Aug 17
5
specific matrix element tranformation
Hi guys, I am trying to write a function that allows me to perform specific transformations to each element of a 2 by 2 matrix to generate a 3 by 3 matrix. Input into function-2 by 2 matrix Output from function -3 by 3 matrix For example: # a is my original 2 by 2 matrix #b is my new 3 by 3 matrix set.seed(2) a=matrix(rnorm(4),ncol=2) #let's say these are the transformations i wish to
2009 Sep 10
2
tranform a table?
hello everyone, i'm new to R, so i hope you dont mind a fairly basic R question. we're using R to manipulate the results of SQL queries and create an HTML output. I'm starting with a table that looks essentially like this: Name Field1 Field2 John value1 value2 Jane value3 value4 My table is stored as a dataframe. I'd like to efficiently produce an
2009 Sep 06
5
ggplot2::qplot() -- arbitary transformations of coordinate system?
Hi, Does anyone know how to do a coord_trans() in which the y-axis is tranformed into (for example) -1000/y? Thanks, _____________________________ Professor Michael Kubovy University of Virginia Department of Psychology USPS: P.O.Box 400400 Charlottesville, VA 22904-4400 Parcels: Room 102 Gilmer Hall McCormick Road Charlottesville, VA 22903 Office: B011
2017 Oct 23
0
Linear regression with tranformed dependant variable
Hello, R-Help answers questions on R code, your question is about statistics. You should try posting the question to https://stats.stackexchange.com/ Hope this helps, Rui Barradas Em 23-10-2017 18:54, kende jan via R-help escreveu: > Dear all, I am trying to fit a multiple linear regression model with a transformed dependant variable (the normality assumption was not verified...). I have
2006 Nov 25
3
Multiple Conditional Tranformations
Greetings, I'm learning R and I'm stuck on a basic concept: how to specify a logical condition once and then perform multiple transformations under that condition. The program below is simplified to demonstrate the goal. Its results are exactly what I want, but I would like to check the logical state of gender only once and create both (or any number of) scores at once.
2017 Oct 23
3
Linear regression with tranformed dependant variable
Dear all,?I am trying to fit a multiple linear regression model with a transformed dependant variable (the normality assumption was not verified...).?I have realised a sqrt(variable) transformation...?The results are great, but I don't know how to interprete the beta coefficients... Is it possible to do another transformation to get interpretable beta coefficients to express the variations in
2008 Nov 28
3
R window lines limit
Hi, Is the number of lines that can be displayed in R GUI limited? When I do a Fourier Tranform of 4000 data points, I can only see the last 300 or so of it. I need to see all of it. How is this possible? Thank you if you can help! -- View this message in context: http://www.nabble.com/R-window-lines-limit-tp20735974p20735974.html Sent from the R help mailing list archive at Nabble.com.
2006 Jul 11
4
Date Format
Hi everybody, I need your precious help for, I think, a simple request, but I do not manage to solve this. When I use a "table" function with dates in the rows, the rows are coerced to number after the table function. So I need to transform the row names into date format. But I do not manage. Therefore, for an example, I manage to write this : datetest<-"06/01/2001"
2006 Jul 11
4
Date Format
Hi everybody, I need your precious help for, I think, a simple request, but I do not manage to solve this. When I use a "table" function with dates in the rows, the rows are coerced to number after the table function. So I need to transform the row names into date format. But I do not manage. Therefore, for an example, I manage to write this : datetest<-"06/01/2001"
2007 May 01
5
[OT] Inject XML into page and tranform with XSL
Hi, Is it possible to recieve an xml repsonse from my rails app, and then, client side, inject the xml into the page without reloading and have it apply an xslt? Like an AJAX call, but ajax is unavailable to me. My very limited understanding suggests that xslt is only done at run time in safari at least. If I can''t get thsi to work the other option I''ve thought of is to use
2017 Aug 18
1
Meta-regression of categorical variables
Dear metafor users, I am working on a meta-analysis of reliability and the correlation associations. I need some help about conducting categorical moderators variables. Questions 1: How to conduct the weighted ANOVAs assuming a mixed-effects model on the tranformed alpha coefficients/the tranformes correlation coefficients for the categorical moderator variables? Questions 2: How to
2008 Oct 24
0
how to do power transformation for time series data?
I am dealing with a seasonal time series data. In order to ger rid of the nonstationarity of the variance, i need to perform power tranformation to the data and choose the best lambda value. In Mass package, there is a function called 'boxcox' to do power tranformation but it only deals with linear model. Is there anyone who knows the other function that cannot perform power tranformation
2008 Jan 09
6
as.date - german date format
Hi, I have a data.frame with the following variable: $ xx :Factor w/ 66 levels "01.02.2006","01.03.2006",..: 3 3 3 3 3 3 3 3 3 now I?d like use "as.date" on it - if I comprehend the instructions on http://finzi.psych.upenn.edu/R/library/base/html/format.Date.html it should work like this: as.date(xx, "%d.%m.%Y") - but it doesn?t... the survival Package
2006 Apr 21
2
forcing apply() to return data frame
Hi All, I am (almost) successfully using apply() to apply a function recursively on a data matrix. The function is question is as.genotype() from the library 'genetics' apply(subset(chr1, names$breed == 'lab'),2,as.genotype,sep ="") Unfortuantely apply puts it's results into a matrix object rather than a data frame, tranforming my factors into numerics and
2020 Feb 10
3
atomic ops are optimized with incorrect semantics .
Hi All, With the "https://gcc.godbolt.org/z/yBYTrd" case . the atomic is converted to non atomic ops for x86 like from xchg dword ptr [100], eax to mov dword ptr [100], 1 the pass is responsible for this tranformation was instCombine i.e InstCombiner::visitAtomicRMWInst which converts the IR like %0 = atomicrmw xchg i32* inttoptr (i64 100 to i32*), i32 1 monotonic to store
2020 Mar 27
2
We have a problem about pass.
Dear, LLVM developers. We appreciate your interest. We contacted to solve the problem of setting the pass. Our pass setup process is as follows: 1. Add pass subdirectory from CMakeLists.txt in llvm/lib/Tranform 2. Change CMakeLists.txt in llvm/lib/Transform/pass 3. Run make in llvm/build/lib However, the desired pass file was not created. There were no errors in the make process. Installed
2010 Nov 02
2
One question on heatmap
Dear R-helper: Suppose we have a matrix: Gene sample1 sample2 Gcnt1 12.0000 52.80000 Max 8.8000 39.10000 Tmem176b 67.9000 304.70000 Shmt2 8.6000 42.40000 Rtn4 11.5000 57.70000 Il17re 7.6000 38.80000 Bclp2 6.2000 32.10000 Mobkl3 4.4000 32.20000 Akr1b10 3.4000 30.10000
2005 Jun 14
2
Prebuffering best practices
What is the best way to pick a prebuffering length for a streaming audio application using UDP transport? I'm using Speex in a VoIP application with RTP transport, currently with a fixed 500ms prebuffer on the playback side. However, I'd like something a bit more adaptive to accomodate high-jitter connections. For example, in one test configuration there is a very low average
2005 Jul 25
1
Convert quarterly data to monthly data
Hi, I am new to use R, but can anyone tell me how to tranform quarterly data to monthly data? I know SAS has this procedure, so may I assume it is also available in R? Thanks a lot! Ed
2008 Mar 31
1
as.character ()
Hello, I'm trying to tranform a numeric vector into a character vector. > x=c(2.00,1.20,5.00,6.56) > y= as.character(x) > y [1] "2" "1.2" "5" "6.56" What I want is : [1] "2.00" "1.20" "5.00" "6.56" Does someone know how to do this please ? Benoit Bruneau