similar to: help in fitted values in lm function

Displaying 20 results from an estimated 10000 matches similar to: "help in fitted values in lm function"

2011 Nov 16
2
fitted.values in lm function
Hi i have few clarification regarding the output from the fitted(object). I'm creating a object using the following formula dataset <- read.csv("~/data.csv") obj = lm (formula="log(y+1)~log(x1+1)+(log(x2+1)+log(x3+1)", data=dataset) fitted(obj) here the output of the fitted(obj) considers the log(x1+1) or just log(x1). -- View this message in context:
2008 Jan 08
1
using lapply()
useR's, I am trying to find a quick way to change some values in a list that are subject to a condition to be NA. Consider the 3x1 matrix: delta <- matrix(c(2.5,2.5,1), nrow = 1) And consider the list named v that has 3 elements > v v[[1]] [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] [,11] [,12] [,13] [,14] [1,] 4.25 3.25 2.25 1.25 0.25 0.75 1.75 2.75 3.75 4.25
2007 May 23
0
Changing sequential regression code to call systemfit
I use code ( actually its code from vars package and its directly below ) to do a sequence of lm calls and the data I use from the matrix depends on restrictions. for(i in 1:K){ datares <- datasub[, which(x$restrictions[i, ] == 1),drop=FALSE] y <- yendog[, i] lmres <- lm(y ~ -1 + ., data=datares) # x$varresult[[i]] <- lmres # x$resid[, i] <-
2008 Mar 11
2
glm.fit: "fitted probabilities numerically 0 or 1 occurred"
Hi, could anyone explain to me what this warning message exactly means and what the consequences are? Is it due to the fact that there are very extreme observations / outliers included or what is the reason for it? Thanks so much, Werner Machen Sie Yahoo! zu Ihrer Startseite. Los geht's:
2008 Aug 07
1
Fitted values with small weights in lm.wfit (PR#11979)
Full_Name: Alexander Blocker Version: 2.7.1 OS: Ubuntu 8.04 / Windows XP Submission from: (NULL) (76.119.235.225) When running lm(modeleq, weights=wt, data=dataset) with small weights (<1e-10), I have encountered an odd phenomenon with fitted values. Due to numerical precision issues, the fitted values and residuals returned by lm.wfit (from its .Fortran call to dqrls) can differ greatly from
2008 Oct 03
1
NA's in segmented
I am trying to fit a very simple broken stick model using the package "segmented" but I have hit a roadblock. > str(data) 'data.frame': 18 obs. of 2 variables: $ Bin : num 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25 4.75 ... $ LnFREQ: num 5.06 4.23 3.50 3.47 2.83 ... I fit the lm easily: > fit.lm<-lm(LnFREQ~Bin, data=id07) But I keep getting an error
2013 Nov 28
2
Find the prediction or the fitted values for an lm model
Hi, I would like to fit my data with a 4th order polynomial. Now I have only 5 data point, I should have a polynomial that exactly pass the five point Then I would like to compute the "fitted" or "predict" value with a relatively large x dataset. How can I do it? BTW, I thought the model "prodfn" should pass by (0,0), but I just wonder why the const is
2005 Apr 16
1
help on extract variance components from the fitted model by lm
Hey, all: Do we have a convenient command(s) to extract the variance components from a fitted model by lm (actually it's a nexted model)? e.g.: using the following codes we could get MSA,MSB(A) and MSE. How to get the variance component estimates by command in R rather than calculations by hand? A<-as.vector(rep(c(rep(1,5), rep(2,5), rep(3,5), rep(4,5), rep(5,5)),2))
2006 May 19
1
How to use lm.predict to obtain fitted values?
I am writing a function to assess the out of sample predictive capabilities of a time series regression model. However lm.predict isn't behaving as I expect it to. What I am trying to do is give it a set of explanatory variables and have it give me a single predicted value using the lm fitted model. > model = lm(y~x) > newdata=matrix(1,1,6) > pred =
2012 Feb 22
4
Week number from a date
Hi My data looks like this startDate="2008-06-01" dateRange =c( "2008-10-01","2008-12-01") Is there any method to find the week number from the startDate range ----- Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/Week-number-from-a-date-tp4410223p4410223.html Sent from the R help mailing list archive at Nabble.com.
2012 Jan 09
6
runif with condition
Hi I want to generate 4 random number which sum up to 100 always Please help ----- Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/runif-with-condition-tp4278704p4278704.html Sent from the R help mailing list archive at Nabble.com.
2007 Oct 03
2
Error in lm.fit(
I am using R.2.4.1 on Windows XP 5.1 (SP 2). I have the following line in my R code. Analysis=anova(lm(PM ~ x)) It works the first 60 or so times it is called but then I get the following error message. Error in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : 0 (non-NA) cases In order to examine the input, I preceeded the call with the following. print(PM) print(x) This gave
2012 Oct 24
3
Results not dispalying in R console
Hi I'm not getting any results in R console when i run commands. I reinstalled R but the results are same ----- Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/Results-not-dispalying-in-R-console-tp4647271.html Sent from the R help mailing list archive at Nabble.com.
2011 Nov 30
3
how to call a function for each row
Hi I have a data-frame which look like this X1 X2 X3 1 3 5 2 4 6 3 6 1 I want to apply a formula Y=6*X1 + 7*X2 + 8*X3 for every row Thanks in Advance -- View this message in context: http://r.789695.n4.nabble.com/how-to-call-a-function-for-each-row-tp4122906p4122906.html Sent from the R help mailing list archive at Nabble.com.
2012 Nov 26
3
Help in splitting the records
Hi I have set of records seperated by a separator say "$$$" i want to get the values in a dataframe. eq qwer$$12$$qwre ewrtr$7789$ewwe I want the output as\ V1 V2 V3 qwer 12 qwre ewrtr 7789 ewwwe Please help me ----- Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/Help-in-splitting-the-records-tp4650827.html Sent from
2006 Aug 11
1
x tick labels - sparse?
Hi, I'm stuck on creating a plot with x tick labels for every Nth tick mark - how is that done? I don't see a simple solution to this in help(plot) or help(par) and what I've tried is not working, eg, the following does not work, although it seems intuitive to me that it should work: x <- seq(-100,1000,25) y <- x * x % find all the x values that are multiples of 100 tmp <-
2004 Aug 21
3
Puzzled at lm() and time-series
I tried toy problems and there doesn't seem to be a basic problem between lm() and ts objects: X = data.frame(x=c(1,2,7,9), y=c(7,2,3,1)) lm(y ~ x, X) X <- lapply(X, function(x) ts(x, frequency=12, start=c(1994,7))) lm(y ~ x, X) and this works fine - whether you do an lm() before or after making ts objects, it's okay. But I have a situation where things aren't okay.
2005 May 31
1
GLM question
I am unfamiliar with R and I’m trying to do few statistical things like GLM and GAM with it. I hope my following questions will be clear enough: My datas ( y(i,j ))are run off triangles for example : J=1 J=2 J=3 I=1 1 2 3 I=2 4 5 I=3 6 My model is : E[y(i,j)] =m(i,j) Var[y(i,j)] =constant *m(i,j) Log(m(i,j)) = eta (i,j) eta (i,j) = c + alpha(i)
2011 Sep 19
2
Setting the Values
Hi I have a variable str = " X", "Y" and values ("0","12") i want to set value for X =0 and Y =12 and use inside the program. how to do this Please anybody help me. -- View this message in context: http://r.789695.n4.nabble.com/Setting-the-Values-tp3823388p3823388.html Sent from the R help mailing list archive at Nabble.com.
2011 Nov 16
3
changing date format in a dataframe
Hi I have a data frame and i need to change the date format in it. my dataframe X Date 1 1/1/2009 2 2/1/2009 3 3/1/2009 I need to change it to 2009-01-01 -- View this message in context: http://r.789695.n4.nabble.com/changing-date-format-in-a-dataframe-tp4076411p4076411.html Sent from the R help mailing list archive at Nabble.com.