Dears Sirs During my computational work I encountered unexpected behavior when calling "ar" function, namely # time series x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) # ar function res.ar<-ar(x,aic=TRUE,demean=F) # call "ar" again and ............ res.ar<-ar(x,aic=TRUE,demean=F) Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning messages: 1: In log(var.pred) : NaNs produced 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used For me it is mysterious why sometimes it works and others it does not, perhaps I am doing something wrong and stupid :-( If anyone had already had this problem could you please tell me how you have solved it? Thank you for your time. Best Regards, Clara Cordeiro [[alternative HTML version deleted]]
Hi Clara, Your example works fine on my Apple Mac running R 2.6.0. You should include the output of sessionInfo() so others will know what platorm you are working on.> # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-+ 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))> > # ar function > res.ar<-ar(x,aic=TRUE,demean=F) > > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482> res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482> summary(res.ar)Length Class Mode order 1 -none- numeric ar 0 -none- numeric var.pred 1 -none- numeric x.mean 1 -none- numeric aic 10 -none- numeric n.used 1 -none- numeric order.max 1 -none- numeric partialacf 9 -none- numeric resid 9 ts numeric method 1 -none- character series 1 -none- character frequency 1 -none- numeric call 4 -none- call> sessionInfo()R version 2.6.0 (2007-10-03) powerpc-apple-darwin8.10.1 locale: en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 attached base packages: [1] splines stats graphics grDevices utils datasets methods base other attached packages: [1] survival_2.34 loaded via a namespace (and not attached): [1] tools_2.6.0>Steven McKinney Statistician Molecular Oncology and Breast Cancer Program British Columbia Cancer Research Centre email: smckinney +at+ bccrc +dot+ ca tel: 604-675-8000 x7561 BCCRC Molecular Oncology 675 West 10th Ave, Floor 4 Vancouver B.C. V5Z 1L3 Canada -----Original Message----- From: r-help-bounces at r-project.org on behalf of Clara Cordeiro Sent: Fri 11/23/2007 7:38 AM To: r-help at stat.math.ethz.ch Subject: [R] help pleaseeeeeeeee Dears Sirs During my computational work I encountered unexpected behavior when calling "ar" function, namely # time series x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) # ar function res.ar<-ar(x,aic=TRUE,demean=F) # call "ar" again and ............ res.ar<-ar(x,aic=TRUE,demean=F) Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning messages: 1: In log(var.pred) : NaNs produced 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used For me it is mysterious why sometimes it works and others it does not, perhaps I am doing something wrong and stupid :-( If anyone had already had this problem could you please tell me how you have solved it? Thank you for your time. Best Regards, Clara Cordeiro [[alternative HTML version deleted]] ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
When I tried it on my Windows system, I executed the script at least 4 times in succession before I got the error:> # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-+ 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))> > # ar function > res.ar<-ar(x,aic=TRUE,demean=F) > > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482> # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-+ 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))> > # ar function > res.ar<-ar(x,aic=TRUE,demean=F)Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning messages: 1: In log(var.pred) : NaNs produced 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used> > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482>Maybe it has something to do with random numbers that might be used in the computation. On Nov 23, 2007 4:13 PM, Steven McKinney <smckinney at bccrc.ca> wrote:> Hi Clara, > > Your example works fine on my Apple Mac running > R 2.6.0. > > You should include the output of > sessionInfo() > so others will know what platorm you are working on. > > > # time series > > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- > + 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > > > > # ar function > > res.ar<-ar(x,aic=TRUE,demean=F) > > > > # call "ar" again and ............ > > res.ar<-ar(x,aic=TRUE,demean=F) > > > > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar > > Call: > ar(x = x, aic = TRUE, demean = F) > > > Order selected 0 sigma^2 estimated as 1.482 > > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar > > Call: > ar(x = x, aic = TRUE, demean = F) > > > Order selected 0 sigma^2 estimated as 1.482 > > summary(res.ar) > Length Class Mode > order 1 -none- numeric > ar 0 -none- numeric > var.pred 1 -none- numeric > x.mean 1 -none- numeric > aic 10 -none- numeric > n.used 1 -none- numeric > order.max 1 -none- numeric > partialacf 9 -none- numeric > resid 9 ts numeric > method 1 -none- character > series 1 -none- character > frequency 1 -none- numeric > call 4 -none- call > > sessionInfo() > R version 2.6.0 (2007-10-03) > powerpc-apple-darwin8.10.1 > > locale: > en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 > > attached base packages: > [1] splines stats graphics grDevices utils datasets methods base > > other attached packages: > [1] survival_2.34 > > loaded via a namespace (and not attached): > [1] tools_2.6.0 > > > > > > Steven McKinney > > Statistician > Molecular Oncology and Breast Cancer Program > British Columbia Cancer Research Centre > > email: smckinney +at+ bccrc +dot+ ca > > tel: 604-675-8000 x7561 > > BCCRC > Molecular Oncology > 675 West 10th Ave, Floor 4 > Vancouver B.C. > V5Z 1L3 > Canada > > > > > -----Original Message----- > From: r-help-bounces at r-project.org on behalf of Clara Cordeiro > Sent: Fri 11/23/2007 7:38 AM > To: r-help at stat.math.ethz.ch > Subject: [R] help pleaseeeeeeeee > > Dears Sirs > > During my computational work I encountered unexpected behavior when calling > "ar" function, namely > # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- > 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > > # ar function > res.ar<-ar(x,aic=TRUE,demean=F) > > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > Error in if (order > 0) coefs[order, 1:order] else numeric(0) : > missing value where TRUE/FALSE needed > In addition: Warning messages: > 1: In log(var.pred) : NaNs produced > 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : > the condition has length > 1 and only the first element will be used > > For me it is mysterious why sometimes it works and others it does not, > perhaps I am doing something wrong and stupid :-( > > If anyone had already had this problem could you please tell me how you have > solved it? > > Thank you for your time. > > Best Regards, > > Clara Cordeiro > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve?
Hi Jim, Yes indeed, after several more attempts at executing the example, I did also eventually trip the error (on the 11th execution of res.ar<-ar(x,aic=TRUE,demean=F)):> res.ar$x.mean[1] 0> res.ar$residQtr1 Qtr2 Qtr3 Qtr4 1978 -0.2052083 -0.3764986 1979 -0.3762448 0.3740089 0.2737568 2.8235722 1980 -1.7783313 0.2728676 -0.3273164> res.ar<-ar(x,aic=TRUE,demean=F) > res.ar$residQtr1 Qtr2 Qtr3 Qtr4 1978 -0.2052083 -0.3764986 1979 -0.3762448 0.3740089 0.2737568 2.8235722 1980 -1.7783313 0.2728676 -0.3273164> x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > res.ar<-ar(x,aic=TRUE,demean=F) > res.ar$residQtr1 Qtr2 Qtr3 Qtr4 1978 -0.2052083 -0.3764986 1979 -0.3762448 0.3740089 0.2737568 2.8235722 1980 -1.7783313 0.2728676 -0.3273164> res.ar<-ar(x,aic=TRUE,demean=F)Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning message: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used> sessionInfo()R version 2.6.0 (2007-10-03) powerpc-apple-darwin8.10.1 locale: en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 attached base packages: [1] splines stats graphics grDevices utils datasets methods base other attached packages: [1] survival_2.34 loaded via a namespace (and not attached): [1] tools_2.6.0 Steven McKinney Statistician Molecular Oncology and Breast Cancer Program British Columbia Cancer Research Centre email: smckinney +at+ bccrc +dot+ ca tel: 604-675-8000 x7561 BCCRC Molecular Oncology 675 West 10th Ave, Floor 4 Vancouver B.C. V5Z 1L3 Canada -----Original Message----- From: jim holtman [mailto:jholtman at gmail.com] Sent: Fri 11/23/2007 1:24 PM To: Steven McKinney Cc: Clara Cordeiro; r-help at stat.math.ethz.ch Subject: Re: [R] help pleaseeeeeeeee When I tried it on my Windows system, I executed the script at least 4 times in succession before I got the error:> # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-+ 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))> > # ar function > res.ar<-ar(x,aic=TRUE,demean=F) > > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482> # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-+ 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3))> > # ar function > res.ar<-ar(x,aic=TRUE,demean=F)Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning messages: 1: In log(var.pred) : NaNs produced 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used> > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar<-ar(x,aic=TRUE,demean=F) > res.arCall: ar(x = x, aic = TRUE, demean = F) Order selected 0 sigma^2 estimated as 1.482>Maybe it has something to do with random numbers that might be used in the computation. On Nov 23, 2007 4:13 PM, Steven McKinney <smckinney at bccrc.ca> wrote:> Hi Clara, > > Your example works fine on my Apple Mac running > R 2.6.0. > > You should include the output of > sessionInfo() > so others will know what platorm you are working on. > > > # time series > > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- > + 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > > > > # ar function > > res.ar<-ar(x,aic=TRUE,demean=F) > > > > # call "ar" again and ............ > > res.ar<-ar(x,aic=TRUE,demean=F) > > > > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar > > Call: > ar(x = x, aic = TRUE, demean = F) > > > Order selected 0 sigma^2 estimated as 1.482 > > res.ar<-ar(x,aic=TRUE,demean=F) > > res.ar > > Call: > ar(x = x, aic = TRUE, demean = F) > > > Order selected 0 sigma^2 estimated as 1.482 > > summary(res.ar) > Length Class Mode > order 1 -none- numeric > ar 0 -none- numeric > var.pred 1 -none- numeric > x.mean 1 -none- numeric > aic 10 -none- numeric > n.used 1 -none- numeric > order.max 1 -none- numeric > partialacf 9 -none- numeric > resid 9 ts numeric > method 1 -none- character > series 1 -none- character > frequency 1 -none- numeric > call 4 -none- call > > sessionInfo() > R version 2.6.0 (2007-10-03) > powerpc-apple-darwin8.10.1 > > locale: > en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 > > attached base packages: > [1] splines stats graphics grDevices utils datasets methods base > > other attached packages: > [1] survival_2.34 > > loaded via a namespace (and not attached): > [1] tools_2.6.0 > > > > > > Steven McKinney > > Statistician > Molecular Oncology and Breast Cancer Program > British Columbia Cancer Research Centre > > email: smckinney +at+ bccrc +dot+ ca > > tel: 604-675-8000 x7561 > > BCCRC > Molecular Oncology > 675 West 10th Ave, Floor 4 > Vancouver B.C. > V5Z 1L3 > Canada > > > > > -----Original Message----- > From: r-help-bounces at r-project.org on behalf of Clara Cordeiro > Sent: Fri 11/23/2007 7:38 AM > To: r-help at stat.math.ethz.ch > Subject: [R] help pleaseeeeeeeee > > Dears Sirs > > During my computational work I encountered unexpected behavior when calling > "ar" function, namely > # time series > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- > 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > > # ar function > res.ar<-ar(x,aic=TRUE,demean=F) > > # call "ar" again and ............ > res.ar<-ar(x,aic=TRUE,demean=F) > Error in if (order > 0) coefs[order, 1:order] else numeric(0) : > missing value where TRUE/FALSE needed > In addition: Warning messages: > 1: In log(var.pred) : NaNs produced > 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : > the condition has length > 1 and only the first element will be used > > For me it is mysterious why sometimes it works and others it does not, > perhaps I am doing something wrong and stupid :-( > > If anyone had already had this problem could you please tell me how you have > solved it? > > Thank you for your time. > > Best Regards, > > Clara Cordeiro > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. >-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve?
Hi Clara, I suspect your error is happening because your input data is short (9 observations). In the help for ar() for argument "order.max" it states order.max Maximum order (or order) of model to fit. Defaults to 10*log10(N) where N is the number of observations except for method="mle" where it is the minimum of this quantity and 12. so perhaps the problem is 10*log10(9) is smaller than 1 and isn't being handled properly (this is just a guess). If I lengthen your data vector to be x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-1.7783313,0.2728676,-0.3273164, -0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1982,3)) I can not trip the error. I filed a bug report. You might try specifying order.max in your function call. If I specify order.max = 1 I can not trip the error.> res.ar<-ar(x,aic=TRUE,demean=F) > res.ar<-ar(x,aic=TRUE,demean=F)Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning message: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used> res.ar<-ar(x,aic=TRUE,demean=F)Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning message: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used> res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1) > res.ar<-ar(x,aic=TRUE,demean=F, order.max = 1)> sessionInfo()R version 2.6.0 (2007-10-03) powerpc-apple-darwin8.10.1 locale: en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8 attached base packages: [1] splines stats graphics grDevices utils datasets methods base other attached packages: [1] survival_2.34 loaded via a namespace (and not attached): [1] tools_2.6.0>Steven McKinney Statistician Molecular Oncology and Breast Cancer Program British Columbia Cancer Research Centre email: smckinney +at+ bccrc +dot+ ca tel: 604-675-8000 x7561 BCCRC Molecular Oncology 675 West 10th Ave, Floor 4 Vancouver B.C. V5Z 1L3 Canada -----Original Message----- From: r-help-bounces at r-project.org on behalf of Clara Cordeiro Sent: Fri 11/23/2007 7:38 AM To: r-help at stat.math.ethz.ch Subject: [R] help pleaseeeeeeeee Dears Sirs During my computational work I encountered unexpected behavior when calling "ar" function, namely # time series x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,- 1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) # ar function res.ar<-ar(x,aic=TRUE,demean=F) # call "ar" again and ............ res.ar<-ar(x,aic=TRUE,demean=F) Error in if (order > 0) coefs[order, 1:order] else numeric(0) : missing value where TRUE/FALSE needed In addition: Warning messages: 1: In log(var.pred) : NaNs produced 2: In if (order > 0) coefs[order, 1:order] else numeric(0) : the condition has length > 1 and only the first element will be used For me it is mysterious why sometimes it works and others it does not, perhaps I am doing something wrong and stupid :-( If anyone had already had this problem could you please tell me how you have solved it? Thank you for your time. Best Regards, Clara Cordeiro [[alternative HTML version deleted]] ______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
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