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2003 Sep 23
2
Plotting of the lm
..., I would like to enquire if by typing plot (lm(y~x)) would this show me the plot of the fitted line? I tried this function previously but I was only able to get the last 4 plots starting with Residuals vs fitted. Thank You. Melissa ************************************************************ JLT Risk Solutions Ltd 6 Crutched Friars, London EC3N 2PH. Co Reg No 1536540 Tel: (44) (0)20 7528 4000 Fax: (44) (0)20 7528 4500 http://www.jltgroup.com Lloyd's Broker. Regulated by the General Insurance Standards Council ------------------------------------------------------------ The content o...
2011 Nov 04
4
How to delete only those rows in a dataframe in which all records are missing
...harity number 1128267, registered company number 6825798). Registered office: Tavis House, 1-6 Tavistock Square, London WC1H 9NA. For the purposes of promoting Age UK Insurance, Age UK is an Appointed Representative of Age UK Enterprises Limited, Age UK is an Introducer Appointed Representative of JLT Benefit Solutions Limited and Simplyhealth Access for the purposes of introducing potential annuity and health cash plans customers respectively. Age UK Enterprises Limited, JLT Benefit Solutions Limited and Simplyhealth Access are all authorised and regulated by the Financial Services Authority....
2013 Jul 22
1
about mix type clust algorithm
Hi: I have tried to find the appropriate clust algorithm for mixed type of data. The suggested way I see is: 1. use daisy to get the dissimilarity matrix 2. use PAM/hclust by providing the dissimilarity matrix, to get the clusters but by following this, when the data set grows bigger say 10,000 rows of data, the dissimilarity matrix will be O(n^2), and out of memory will occur. I am
2013 Feb 21
2
Arimax with intervention dummy and multiple covariates
...rity number 1128267, registered company number 6825798). Registered office: Tavis House, 1-6 Tavistock Square, London WC1H 9NA. For the purposes of promoting Age UK Insurance, Age UK is an Appointed Representative of Age UK Enterprises Limited, Age UK is an Introducer Appointed Representative of JLT Benefit Solutions Limited and Simplyhealth Access for the purposes of introducing potential annuity and health cash plans customers respectively. Age UK Enterprises Limited, JLT Benefit Solutions Limited and Simplyhealth Access are all authorised and regulated by the Financial Services Authority...
2004 Dec 13
0
Re: Help : generating correlation matrix with a particula r
...nded and gives the same result as our code, but it will be much better behaved in the wild than ours will. BTW Troels Ring [tring at gvdnet.dk] found the Rebonato paper at http://www.quarchome.com/correlationmatrix.pdf Thank you Troels. Best regards, Herb Herbert G. Desson, ACAS, MAAA Actuary JLT Risk Solutions 6 Crutched Friars London EC3N 2PH phone: +44 (0)20 7528 4702 fax: +44 (0)20 7558 3785 -----Original Message----- ************************************************************ JLT Risk Solutions Ltd 6 Crutched Friars, London EC3N 2PH. Co Reg No 1536540 Tel: (44) (0)20 7528...
2013 Jul 05
1
kruskal.test followed by kruskalmc
Hi all, After running kruskal.test I have got results (p<0,005) pointing to reject the hypothesis that the samples were draw from the same population. Howerver when I run the kruskalmc there are no significant differences in any of the multiple comparisons. Is that possible? Some clarification? Thanks, Humber <https://sites.google.com/site/humberandrade> [[alternative HTML version
2004 Dec 13
1
Re: Help : generating correlation matrix with a particular
...b<-s%*%sqrt(l) for(i in 1:nrow(b)){b[i,]<-b[i,]/sqrt(sum(b[i,]^2))} ap<-b%*%t(b) ap It is based on a paper by Rebonato etal that formerly was at www.rebonato.com/correlationmatrix.pdf. Unfortunately the website has disappeared. Best regards, Herb Herbert G. Desson, ACAS, MAAA Actuary JLT Risk Solutions 6 Crutched Friars London EC3N 2PH phone: +44 (0)20 7528 4702 fax: +44 (0)20 7558 3785 >Message: 2 >Date: 12 Dec 2004 14:58:38 +0100 >From: Peter Dalgaard <p.dalgaard at biostat.ku.dk> >Subject: Re: [R] Help : generating correlation matrix with a > par...
2003 Sep 23
2
How to extract data from Excel
Hi, I would like to know how to extract the data from Excel Spreadsheet. Thank you very much. Melissa ************************************************************ JLT Risk Solutions Ltd 6 Crutched Friars, London EC3N 2PH. Co Reg No 1536540 Tel: (44) (0)20 7528 4000 Fax: (44) (0)20 7528 4500 http://www.jltgroup.com Lloyd's Broker. Regulated by the General Insurance Standards Council ------------------------------------------------------------ The content o...
2012 Sep 18
0
[Re] add reference lines (or grid) in background
...rity number 1128267, registered company number 6825798). Registered office: Tavis House, 1-6 Tavistock Square, London WC1H 9NA. For the purposes of promoting Age UK Insurance, Age UK is an Appointed Representative of Age UK Enterprises Limited, Age UK is an Introducer Appointed Representative of JLT Benefit Solutions Limited and Simplyhealth Access for the purposes of introducing potential annuity and health cash plans customers respectively. Age UK Enterprises Limited, JLT Benefit Solutions Limited and Simplyhealth Access are all authorised and regulated by the Financial Services Authority...
2003 Jan 09
0
Installing R-Excel Interface - Help requested (long)
...un correctly after installing DCOM. Details of all the error messages and the vbtest output can be found below. I would be most grateful if someone can show me how to make this work properly. Thank you for your help. Best regards, Herb Herbert G. Desson, ACAS, MAAA Actuary Capital Risk Group JLT Risk Solutions 6 Crutched Friars London EC3N 2PH phone: +44 (0)20 7528 4702 fax: +44 (0)20 7558 3785 If the Rserver box is ticked within Tools / Addins upon launching Excel, I get "invalid picture error (error 481)". Invalid picture (Error 481) An invalid graphics format was as...
2013 Sep 03
1
ESEM in R
Hello R experts, Is there any possibility to perform exploratory structural equation modeling (ESEM) in R? Which package should I use? Thanks a lot for help, Krzysztof
2013 Mar 22
4
error while extracting the p-value from adf.test
Hello all, I tried to extract the p-value from adf.test in tseries; however, I got the error message such as > ht=adf.test(list.var$aa) > ht$p-value Error in ht$p - value : non-numeric argument to binary operator > ht Augmented Dickey-Fuller Test data: list.var$aa Dickey-Fuller = -2.3147, Lag order = 4, p-value = 0.4461 alternative hypothesis: stationary > ht$data [1]
2012 Nov 30
1
Little's Chi Square test for MCAR?
Is there any further development in R to identify the missing data Mechanism? Would you please help ? ======= Please find our Email Disclaimer here-->: http://www.ukzn.ac.za/disclaimer ======= [[alternative HTML version deleted]]
2012 Oct 30
1
Amelia imputation - column grouping
Hi everybody, I am quite new to data imputation, but I would like to use the R package ' Amelia II: A Program for Missing Data '. However, its unclear to me how the input for amelia should look like: I have a data frame consisting of numerous coulmns, which represent different experimental conditions, whereby each column has 3 replicates. I want amelia to perform an imputation across
2013 Feb 07
1
coplot question
In R I have 3 variables x,y and z that contain: | x y z [1,] 1 12 122 [2,] 1 13 113 [3,] 1 11 111 [4,] 3 13 123 [5,] 4 14 134 [6,] 5 15 155| I am creating a coplot with the following syntax: |given.depth<- co.intervals(z, number=3, overlap=.1) coplot(x~y|z,pch=19,col="red",cex=1.5,given.values=given.depth)| The resulting plot however has has bars in the
2012 Sep 27
2
Is there a function that runs AR model with Schwarz Bayesian Information Criteria (BIC)?
Hello, Is there a function in R by which one can run AR model with Bayesian Information Criteria (BIC)? To my knowledge, functions ar and ar.ols could select the order only by AIC. Thanks, Miao [[alternative HTML version deleted]]
2012 Oct 16
1
anova test for variables with different lengths
Hi all, I want to test whether the MEAN of two different variables, (and different number of observations) are the same. I am trying to use the anova test but it doesn't seem to like that the number of observations are different: a=c(1:5) b=c(1:3) aov_test=aov(a~b) >>Error in model.frame.default(formula = a ~ b, drop.unused.levels = TRUE) : variable lengths differ (found for
2013 Apr 09
4
Boxplot Labels OK
Dear all, I have just sent an enquiry but probably I hadn’t expressed myself properly. Could anyone help me with the following? When I run the code on my data I get a boxplot with outliers identified by numbers 200 & 201. However, what I would like is to label these outliers with their corresponding “DATA$num” values of the data frame. In this example, the outliers should be labelled as:
2012 Dec 13
1
Pairwise deletion in a linear regression and in a GLM ?
Dear useRs, In a thesis, I found a mention of the use of pairwise deletion in linear regression and GLM (binomial family). The author said that he has used R to do the statistics, but I did not find the option allowing pairwise deletion in both lm and glm functions. Is there somewhere a package allowing that ? Thanks, Arnaud [[alternative HTML version deleted]]
2012 Aug 22
2
Fwd: Need help
Dear colleagues. I wonder if anybody knows about a procedure in R to calculate the Berger-Parker index and the Brillouin Diversity index. I searched the net but did not find anything good about it. Thanks a lot for any help Mayo, Elvira. [[alternative HTML version deleted]]