[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@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.
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.ar Call: 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.ar Call: 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 <[EMAIL PROTECTED]> 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.pred1 -none- numeric > x.mean 1 -none- numeric > aic10 -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 > call4 -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: [EMAIL PROTECTED] on behalf of Clara Cordeiro > Sent: Fri 11/23/2007 7:38 AM > To: [EMAIL PROTECTED] > Subject: [R] help please > > 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 a
Re: [R] help pleaseeeeeeeee
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$x.mean [1] 0 > res.ar$resid Qtr1 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$resid Qtr1 Qtr2 Qtr3 Qtr4 1978 -0.2052083 -0.3764986 1979 -0.3762448 0.3740089 0.2737568 2.8235722 1980 -1.7783313 0.2728676 -0.3273164 > x<-ts(c(-0.2052083,-0.3764986,-0.3762448,0.3740089,0.2737568,2.8235722,-1.7783313,0.2728676,-0.3273164),start=c(1978,3),frequency=4,end=c(1980,3)) > res.ar<-ar(x,aic=TRUE,demean=F) > res.ar$resid Qtr1 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:[EMAIL PROTECTED] Sent: Fri 11/23/2007 1:24 PM To: Steven McKinney Cc: Clara Cordeiro; [EMAIL PROTECTED] Subject: Re: [R] help please 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.ar Call: 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.ar Call: 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 <[EMAIL PROTECTED]> 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.pred1 -none- numeric > x.mean 1 -none- numeric > aic10 -none- numer
Re: [R] help pleaseeeeeeeee
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.pred1 -none- numeric x.mean 1 -none- numeric aic10 -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 call4 -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: [EMAIL PROTECTED] on behalf of Clara Cordeiro Sent: Fri 11/23/2007 7:38 AM To: [EMAIL PROTECTED] Subject: [R] help please 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@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@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.
Re: [R] help pleaseeeeeeeee
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.maxMaximum 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: [EMAIL PROTECTED] on behalf of Clara Cordeiro Sent: Fri 11/23/2007 7:38 AM To: [EMAIL PROTECTED] Subject: [R] help please 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
Re: [R] help pleaseeeeeeeee
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: [EMAIL PROTECTED] on behalf of Clara Cordeiro > Sent: Fri 11/23/2007 7:38 AM > To: [EMAIL PROTECTED] > Subject: [R] help please > > 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@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<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > > [[alternative HTML version deleted]] __ R-help@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.
Re: [R] help pleaseeeeeeeee
CCordeiro wrote: > > Hi > > > > Thank you very much for you interest and help in this "mysterious" > problem. > > I am going to investigate the random numbers issue. Concerning the > order.maxit helps but it is not what I have in mind. I think that in > case > Dear Clara, this did actually get investigated, but was continued in a thread on the R development list: http://www.nabble.com/Bug-in-package-stats-function-ar%28%29-%28PR-10459%29-tf4864536.html The problem is indeed with the "order.max" calculation, which should not allow order.max to equal the length of the data series (but does for very short time series). There are no random numbers involved in this calculation. Something like res.ar<-ar(x,aic=TRUE,demean=F,order.max=length(x)-1) should prevent this particular problem from happening ... Ben Bolker PS: it was very good of you to give a reproducible example, and very helpful of you to point out this bug. In the future, the other helpful thing you could do is give your message an informative subject line (e.g. "problem with ar()" rather than "help pleaseee") ... -- View this message in context: http://www.nabble.com/help-please-tf4862400.html#a13948775 Sent from the R help mailing list archive at Nabble.com. __ R-help@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.
