search for: standardisation

Dear Rusers, I want to standardise the values of x/y coordinates to the unit square, i.e. make the x-values all lie within [0,1] and all the y-values lie within [0,1] in the bottom example. I had thought to use scale() function to do it, but it seems that it's used to standardise a variable and the scaled value was not within [0,1]. OR, i can divide x/y-values by their maximum value to get

Hi I have a data comprised of repeated measures of growth (5-15 records per individual) for 580 fish (similar to Orange dataset from nlme library). I would like to standardise these growth measures (yi – ŷ/sd) using mean and standard deviation unique to each fish. Can someone suggest a function that would help me do this? I’ve had a look at scale and sweep but can’t find a worked example that does

Hello, I have a statistical problem that I am using R for, but I am not making sense of the results. I am trying to use multiple regression to explore which variables (weather conditions) have the greater effect on a local atmospheric variable. The data is taken from a database that has 20391 data points (Z1). A simplified version of the data I'm looking at is given below, but I have a

Dear all, I have a question about the 'sdev' value returned by the princomp function (which does principal components analysis). On the help page for princomp it says 'sdev' is 'the standard deviations of the principal components'. However, when I calculate the principal components for the USArrests data set, I don't find this to be the case: Here is how I

Dear All, I am a undergraduate using R for the first time. It seems like an excellent program and one that I look forward to using a lot over the next few years, but I have hit a very basic problem that I can't solve. I want to produce a standardised histogram, i.e. one where the area under the graph is equal to 1. I look at the manual for the histogram function and find this: freq:

Dear R-users, I need to standardize residuals using standard deviation. Is the 'stdres' the proper function? Beside other methods (for standardization and normalization), are there some approaches how to standardize using standard deviation? Here is the sample of my residuals: Zres040 Zres0820 Sres040 Sres0820 PCres040 -2.101740 -2.0682900 1.6328500 0.5046730

Hi folks, I have a dataframe df.vars with the follwing structure: var1 var2 var3 group Group is a factor. Now I want to standardize the vars 1-3 (actually - there are many more) by class, so I define z.mean.sd <- function(data){ return.values <- (data - mean(data)) / (sd(data)) return(return.values) } now I can call for each var z.var1 <- by(df.vars$var1, group,

Hi all, This came up in a recent review. There is currently no documented style for how to write error messages. For example, should they start with a capital letter or end in a full stop? Consequently, there's quite a bit of inconsistency in our diagnostics throughout the code base. clang typically emits error messages with no leading capital letter and no trailing full stop. For example:

The biggest problem with Vorbis comments are too loose specifications and too little standardisation. Another problem is attribution of involved parties. Currently only the ARTIST field name is supported in software. More standardised field names need to be worked out for organisations and persons involved in the production of the recording. See: http://wiki.xiph.org/index.php/VorbisComment#At...

yes this is darkice. perhaps we could work in 'icy-public' support...? --mark On Tuesday, Jul 8, 2003, at 19:58 US/Pacific, Arc wrote: > On Tue, Jul 08, 2003 at 03:40:42PM -0500, oddsock wrote: >> what source client is generating that ? > > I believe they run darkice, Mark Burdett would have to supply more > specific details as this is a relay of their lofi-mp3

Can someone tell me what an object of class lm returned by lm means? I assumed it mean the regression model - but I'm not sure how to enter this in. I have tried y~a+b but this is not working. I have also tried saving the regression results and entering these, but again this is incorrect. This language is from the following: lm.LMtests(model, listw, zero.policy=FALSE,

...anness (little/big). How one can even guarantee e.g. that a calling convention for NVIDIA GPUs is appropriate for ATI GPUs? So using calling conventions too early on (e.g. between invoking the clBuildProgram() and clCreateKernel() API functions) is a path to implementation divergence, rather than standardisation. From: Nick Lewycky [mailto:nlewycky at google.com] Sent: 17 December 2010 22:16 > > If that's not enough, could you swing it around and maintain single > > named metadata node with a list of functions that are marked __kernel? This is exactly what we would like to do if metada...

ComRades: I have a glm where interest lies in the estimated mean levels of the response Y for every level of factor Year (regardeless of statistical significance of the factor), when the effect of other factors have been accounted for. The model is of the form: fit<-glm(Y~Year+Mo+Area+Ship+Eff,family=gaussian(link="log"),data=data) where Year is categorical and has T levels

Does anyone out there already have a utility to rename ogg files based on the tags? I want to re-standardise on "[track number] - [artist] - [track name].ogg" but my files are currently not that. It should be easy enough, as everything is tagged, but I'm sure someone else has written this already. Or are there Perl libraries to read tags? Otherwise I'll have to do it then donate

Hi, I have what might be a silly question but is there any way to put some of the database configuration information into a separate file? For instance, in config/database.yml I have: developer_database: &developer_database adapter: mysql username: me password: something host: 127.0.0.1 development: <<: *developer_database database: foobar_development test: <<:

Hi I know how to referenc R in a scientific paper - but is there a standardised way to reference packages? Thanks Rainer -- NEW EMAIL ADDRESS AND ADDRESS: Rainer.Krug at uct.ac.za RKrug at sun.ac.za WILL BE DISCONTINUED END OF MARCH Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation Biology (UCT) Plant Conservation Unit Department of Botany University of Cape Town Rondebosch 7701

Dear all, I am looking for some interactive study materials on Principal component analysis. Basically I would like to know what we are actually doing with PCA? What is happening within the dataset at the time of doing PCA. Probably a 3-dimensional interactive explanation would be best for me. I have gone through some online materials specially Wikipedia etc, however what I need a "movable

Hello folks. I''ve got a problem that I can''t work out the solution to. My base workstation node definition says essentially: node base-workstation { file { etc-sudoers: name => "/etc/sudoers", ... } } This works fine, all of our workstations get a standardised sudoers file. However, I have one user on a workstation who needs a specialised sudoers file.

Hi, Although my doubt is pretty,as i m not from stats background i am not sure how to proceed on this. Currently i am doing a forecasting.I used ARIMA to forecast and time series was volatile i used garchFit for residuals. How to use the output of Garch to correct the forecasted values from ARIMA. Here is my code: ###delta is the data fit<-arima(delta,order=c(2,,0,1)) fit.res <-

Update: I looked through VirtIO 1.0 and 1.1 specs, data format their, including byte order, is defined on a per-device type basis. RPMsg is indeed included in the spec as device type 7, but that's the only mention of it in both versions. It seems RPMsg over VirtIO isn't standardised yet. Also it looks like newer interface definitions specify using "guest native endianness"