search for: pearmain

...the ETC data file only has 67 and the SURVEY file only has 28. (Reading the help it looks as if it merges 1 case with all cases in the other file, which is not what i want) The matching variables fields are the 'ord' field and the 'uid' field Can anyone advise please? -- Michael Pearmain [[alternative HTML version deleted]]

Merry Xmas to all, I am writing a function and curiously this runs sometimes on one data set and fails on another and i cannot figure out why. Any help much appreciated. If i run the code below with data <- iris[ ,1:4] The code runs fine, but if i run on a large dataset i get the following error (showing data structures as matrix is large) > str(cluster.data) num [1:9985, 1:811] 0 0 0 0

...bit of a stumbling block of a hidden function, can anyone help? > library(gplots) > methods(barplot2) [1] barplot2.default* Non-visible functions are asterisked > barplot2 function (height, ...) UseMethod("barplot2") <environment: namespace:gplots> Mike -- Michael Pearmain Senior Analytics Research Specialist "I abhor averages. I like the individual case. A man may have six meals one day and none the next, making an average of three meals per day, but that is not a good way to live. ~Louis D. Brandeis" Google UK Ltd Belgrave House 76 Buckingham Palace...

Another newbie question. I've written a function and saved the file as Xtabs.R, in a central place on a network so others will be able ot use the function, My question is how do i call this function? I've tried to chance the working directory, and tried to load it via; > library(Xtabs, lib.loc="//filer/common/technical/surveys/R_test") but neither seem to work? the function

Hi All, I've been given a data file of the form: 1: 3,4,5,6 2:1,2,3 43: 5,7,8,9,5 and i want to read this data in as a list to create the form: (guessing final look) my.list [[1]] [1] 3 4 5 6 [[2]] [1] 1 2 3 [[43]] [1] 5 7 8 9 5 I can get to a stage using scan: scan("my.data", what = character(0), quiet = TRUE) to load [1] "1: 3,4,5,6" [2] "2:1,2,3" [3]

...1 2 12 Chrome 52 12 8.6696 1 2 13 Chrome 22 12 1.7443 0 2 14 Chrome 60 12 0.2253 0 2 15 Chrome 24 14 4.3348 1 3 -- Michael Pearmain Senior Analytics Research Specialist Google UK Ltd Belgrave House 76 Buckingham Palace Road London SW1W 9TQ United Kingdom t +44 (0) 2032191684 mpearmain@google.com If you received this communication by mistake, please don't forward it to anyone else (it may contain confidential or privilege...

...without any problems, SPSS returns values of Beta1 = 2.4979 and Beta2 = -2.02 456) but return the error message, Error in nls(bod ~ beta1/(1 - exp(beta2 * time)), data = mydata, start = list(beta1 = 3, : singular gradient Can anyone offer any advice? Thanks in advance Mike -- Michael Pearmain Senior Analytics Research Specialist “Statistics are like women; mirrors of purest virtue and truth, or like whores to use as one pleases” Google UK Ltd Belgrave House 76 Buckingham Palace Road London SW1W 9TQ United Kingdom t +44 (0) 2032191684 mpearmain@google.com If you received this communic...

I'm having trouble creating a looping variable and i can't see wher ethe problem arises from any hep gratfully appreciated First create a table x<-table(SURVEY$n_0,exposed) > x exposed False True Under 16 24 1 16-19 68 9 20-24 190 37 25-34 555 204 35-44 330 87 45-54 198 65 55-64 67 35 65+

...combined c 2 counter true combined d 3 counter true combined e 1 So i dont have to create the dummy variables. does this make sense? Many thanks in advance Mike -- Michael Pearmain "I abhor averages. I like the individual case. A man may have six meals one day and none the next, making an average of three meals per day, but that is not a good way to live. ~Louis D. Brandeis" f you received this communication by mistake, please don't forward it to anyone else...

Hi All, I have am using Sweave and the \Sexpr{} to place some numeric variables in my tex document. I want to format the number prior to entry so they read slightly more elegantly. Say i have the following numbers x <- 0.00487324 y <- 0.000000432 z <- 0.567 I would like to have the numbers displayed as follows x1 <- 0.0049 y1 <- 0.00000043 z1 <- 0.57 I've seen i can use

Hi All, I've been having a little trouble using R2HTML and a loop, but can't figure out where the problem lies, any hints gratefully received. My code at the minute, (Which does work) is in the following: library(R2HTML) HTMLStart(outdir = file.path("C://Example_work","R_projects","Dynamic_creative"),filename = "RMDC_mockup",Title="Mock up for

Hi All, i have a dataset that i want to dynamically inspect for the number of variables that start with "Exposure_" and then for these count the entries across each case i.e ID Exposure_1 Exposure_2 Exposure_3 1 y y y 2 y y - 3 y - - So the corresponding new variables

Hi All, I'm having some trouble assigning arguments inside a function to produce a plot from a model Can anyone help me? Below I've outlined the situation and examples of failing and working code. Regards Mike ## data ## decay.data <- ... behaviors lift reach.uu estimated.conversions.uu total.reach 1 1 432.0083 770 770 0.00 2

Hi All, I'm having trouble selecting rows to delete, that i can't seem to overcome. Below is some sample data, i am trying to dedup the data based on each user, and simultaneously the timestamp (at the side i have highlighted expected row to be removed) I've looked at the lag function but can't seem to make it work? My logic ran along the lines of an ifelse statement and then

Hi All, I've a couple of questions i've been struggling with using the time features, can anyone help? sample data Timestamp user_id 27/05/08 22:57 763830873067 27/05/08 23:00 763830873067 27/05/08 23:01 763830873067 27/05/08 23:01 763830873067 05/06/08 11:34 763830873067 29/05/08 23:08 765253440317 29/05/08 23:06 765253440317 29/05/08 22:52 765253440317

Hi All, I have a table based on ordial data and i want to compare proportions and i've seen in the pwr package i can use power.prop.test however i want to find out what the sig. value is based on n1,n2,p1,p2 and this package doesn't contain this.. Does anyone know of a package that does or is it a case of writting a function specifically for this? Many thanks in advance [[alternative

Hi All, I seem to be having a few troubles with aggregating data back onto the the dataframe, I want to take the max value of a user, and then apply this max value back against all id's that match (i.e a one to many matching) Can anyone offer any advice? is there a better way of doing this? Dummy data and code are listed below:- dataset is called Mcookie user_id c_we_conversion 1

...08-21:03:55 07-07-2008-19:52:55 07-07-2008-19:54:14 07-07-2008-15:24:01 07-07-2008-13:39:17 07-07-2008-13:39:55 timestamp<-strptime(timestamp,"%d-%m-%y-%H:%M:%S") ## then filter on the datetime time<-ifelse(timestamp> "07-08-2008-00:00:00", TRUE, FALSE) -- Michael Pearmain Senior Statistical Analyst Google UK Ltd Belgrave House 76 Buckingham Palace Road London SW1W 9TQ United Kingdom t +44 (0) 2032191684 mpearmain@google.com If you received this communication by mistake, please don't forward it to anyone else (it may contain confidential or privileged informat...

Hi All, i have searched the web for a simple solution but have been unable to find one. Can anyone recommend a neat way of deleting multiple variable? I see, i need to use dataframe$VAR<-NULL to get rid of one variable, In my situation i need to delete all vars between two points. I've used the 'which' function to find these out and have assigned to myvar >myvars [1] 2 17 but

Hi All, I've just recently discovered the cmpfun function, and was wanting to to create a function to assign this to all the functions i have created, but without explicitly naming them. I've achieved this with: foo <- function(x) { print(x)} bar <- function(x) { print(x + 1)} > foo <- function(x) { print(x)} > foo function(x) { print(x)} > cmpfun(foo) function(x) {