After the following R commands: a.out<-amelia(bd2,m=5 ,idvars =c("bd_id",”cty”),noms=c("race4","outc")) , I received this error message: “Error in if (sum(non.vary == 0)) { : argument is not interpretable as logical” What that means? I used the current versions of R and Amelia on Windows The data contains more than 100,000 records, with 6 variables. They are all factors except bwt3, a continuous variable. See below the first rows of the data frame bd2: *bd_id* *race4* *outc* *cty* *bwt3* 1989-35129 1 1 0 2665 1989-43790 2 1 0 3685 1989-44528 1 1 0 3402 1989-48485 1 1 0 3175 1989-49402 1 1 0 3742 1989-55241 4 1 0 3941 Thanks you for any help. Ndiaye

Hi Matt, I am still having the same error message  with version 1.2-14. The problem persists even after using a  small subset of the data and substituting some variables. Thank you for your assistance. Ndiaye From: Matt Blackwell [mailto:blackwel@fas.harvard.edu] Sent: Tuesday, February 16, 2010 4:28 PM To: Ndiaye, Mamadou Cc: amelia(a)lists.gking.harvard.edu Subject: Re: [amelia] Error in if (sum(non.vary == 0)) Hi Ndiaye, Do you still have this problem on the latest version of Amelia? You should see the version number when you load the Amelia package. The most current version is 1.2-14. Thanks! matt. On Tue, Dec 22, 2009 at 5:28 PM, Ndiaye, Mamadou &lt;MNdiaye(a)publichealthmdc.com&gt; wrote: After the following R commands: a.out<-amelia(bd2,m=5 ,idvars =c("bd_id",”cty”),noms=c("race4","outc")) , I received this error message: “Error in if (sum(non.vary == 0)) { :   argument is not interpretable as logical” What that means? I used the current versions of R and Amelia on Windows The data contains more than 100,000 records, with 6 variables. They are all factors except bwt3, a continuous variable. See below the first rows of the data frame bd2: bd_id race4 outc cty bwt3 1989-35129 1 1 0 2665 1989-43790 2 1 0 3685 1989-44528 1 1 0 3402 1989-48485 1 1 0 3175 1989-49402 1 1 0 3742 1989-55241 4 1 0 3941 Thanks you for any help. Ndiaye