similar to: Sampling in R

Hi, I am facing the problem that I want to plot a histogram chart set freq to true and overlay with normal or weibull or exponential distribution curve. The sample code is shown as below: >samp<-c(-8.2262,-8.2262,-8.2262,-8.20209,-8.09294,-8.07321,-8.07321, -8.07321,-8.07175,-8.04948,-8.04948,-8.04948,-8.03848,-8.03848,

I am interested in locating a script to implement a sampling scheme that would basically make it more likely that a particular observation is chosen based on a weight associated with the observation. I am trying to select a sample of ~30 census blocks from each ZIP code area based on the proportion of women in a ZCTA living in a particular block. I want to make it more likely that a block will

I have a vector of values (about 8000 obs between 0 and 1). I want to display a histogram as follows: value of vector ( bw 0 and 1) | | | | | |______________________________________ all 8000 obs. So that each section of the x axis corresponds

Hi R users, My goal is to rank my samples according to how they fall out in a histogram with 10 bins to produce a ranking for each sample according to where it falls on the histogram, with a "1" to represent one tail of the hist, a "10" to represent the other tail, and a "5" for the median/mean. I have a number of different data sets to do this with and in all cases

With R and the hist function, is there a way to make a histogram in which the y axis denotes propotion with respect to a separate sample dataset of the same range instead of frequency? [[alternative HTML version deleted]]

Full_Name: Michael Chajewski Version: 2.9.0 OS: Windows XP Submission from: (NULL) (150.108.71.185) I was programming a routine which kept reducing the array from which a random sample was taken, resulting in a single number. I discovered that when R attempts to sample from an object with only one number it does not reproduce/report the number but instead chooses a random number between 1 and

Hi, Does anybody encounter the same problem when we overlap histogram and density     that the density line seem to shift to the right a little bit?           If you do have the same problem, what should we do to correct that?           Thank you.           par(mar=c(4,4,2,1.2),oma=c(0,0,0,0))     hist(datobs,prob=TRUE, main ="Volume of a catchment from four    

Hi, I looked up the help file on sample(), but didn't find the info I was looking for. When sample() is used to resample from a distribution, e.g., bootstrap, how does it do it? Does it use an uniform distribution, e.g., runif(), or something else? And, when the help file says:"sample(x) generates a random permutation of the elements of x (or 1:x)", would I be correct if I

Dear R-expert, For histogram function, can we get the table of bin and frequency like in excel, together with the histogram? Therefore, we can check the number of data included. Thank you so much for your attention and help. ____________________________________________________________________________________ [[elided Yahoo spam]]

Hi all, Is it possible to generate the same sample number of times in R? In SAS, using the option "seed" it is possible to reproduce exactly the same sample. Is there any such feature in R which I can use? For further clarity, for (i in 1:2) { samp = sample(1:1000,100,replace = FALSE) print(samp) } For the above simulation, is it possible to generate the same sampled units

Hi there, I am wanting to create 8 side-by-side histograms which have been rotated 90 degrees clockwise from how they usually sit.. all with the same scales. Is someone able to help me out? Thanks so much, Rachel Cunliffe -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send

Hi, I have a casting/formatting question on hist.POSIXt: The histogram plot from POSIXct works perfect (with help of Prof. Ripley -thanks!). When processing the hist(plot=FALSE) output and then plotting the results over the x-axis (bins) coming from hist(), I lose the date/time labels, getting instead integers displayed. Trying to cast the $breaks with as.POSIXct gives silly results with

hi, first I want to say that I'm new here, and new with copula and R. That is the reason why I'm writing, if somebody can help me. I have to make an example of Copula. On internet I've found this forum and that copula can calculate with R. Can somebody help me with the thing how can I start and where can read about these stuffs. Thank to all who can help! -- View this message

Dear R users I am trying to obtain p-values for (quasi)poisson lmer models, including Markov-chain Monte Carlo sampling and the command summary. > > My problems is that p values derived from both these methods are totally different. My question is (1) there a bug in my code and > (2) How can I proceed, left with these uncertainties in the estimations of > the p-values? > > Below

Hi I have recently been analyzing birthweight data from a clinic. The data has obvious defects in that there is digit preference on certain weights making them overrepresented. This shows as spikes in the histogram on certain well rounded weights like 2, 2.5, 3, etc. I would like to show this to government officials but can't figure out how I should present the finding in an easy to

Hello, I urgently need a histogram of the vector geo1$ds1 but: > hist(geo1$ds1) Error in hist(geo1$ds1) : unused argument(s) ( ...) I can use density, summary, boxplot and stem with this vector but not hist ? Any suggestions ? Thanks in advance, Detlef Groth > density(geo1$ds1) Call: density(x = geo1$ds1) Data: geo1$ds1 (1412 obs.); Bandwidth 'bw' = 0.2805

Hello, I'm a new R user and I'm having a little trouble getting started. I'm hoping someone can help me out. I have data that looks like this: phone|state|code|amount|left|channel|time|mtd 15555551234|3|983|1000|266|IN|2003-03-16 23:57:21-05|C 15555552345|3|983|3000|0|IN|2003-03-16 23:58:16-05|C 15555552346|3|983|1000|40|IN|2003-03-16 23:58:24-05|C Which I've read using scan().

Dear Masters, I have a question to submit consider the following script m<-4.95 obs<-rpois(36,m) # i generate 36 realization from a poisson(m) hist(obs,freq=F) curve(dpois(x,m),add=T,col="red") #i wish to overlay on the histogram the theorical poisson density function errors are returned saing the x vector doesn't contain integers.... really bizarre i can't give

Dear all, I would like to create a k,n matrix which that will include - k random elements with value 1 -all rest zeros -one single "1" in each row - each column will have maximum one "1" so far I have a so stupid function that with nested while tries to fit k numbers randomly in a row by row fashion, checking also if the c column rule is violated. In that case there is

Hello all, I am importing data from a txt file and try to get a histogram, I get the message: "Error in hist: 'x' must be numeric". When I use mode R returns "List". However when I use srt I get: `data.frame': 456 obs. of 1 variable: $ V1: num 0.6344 0.4516 0.0968 0.7634 0.7957 ... My file consists of one column only (no headers) and I can't figure out why