Dear all There are a stardand JSON format file from R code. It have a error on this file. How to modify this source code for a stardand JSON format file? Test1: Soure code for R studio: Issue_Name<-c("Tag over 30% in minutes") URL_Link<-c("http://61.221.174.234/trendalarm_all.txt") ULink=list(Issue=Issue_Name,URL=URL_Link) #ULink to JSON format sink("ULink.txt") cat(toJSON(ULink)) sink() Result:<This is not a stardand JSON format file> > cat(toJSON(ULink)) {"Issue":"Tag over 30% in minutes","URL":"http://61.221.174.234/trendalarm_all.txt"} > sink() Test2: Soure code for R studio: Issue_Name<-c("Tag over 30% in minutes") URL_Link<-c("http://61.221.174.234/trendalarm_all.txt") ULink=list(Issue=Issue_Name,URL=URL_Link) Run R source code, then run the below command on console windows sink("ULink.txt") cat(toJSON(ULink)) sink() Result:<This is a stardand JSON format file> {"Issue":"Tag over 30% in minutes","URL":"http://61.221.174.234/trendalarm_all.txt"} Thanks -- View this message in context: http://r.789695.n4.nabble.com/R-write-to-JSON-format-error-tp4706860.html Sent from the R help mailing list archive at Nabble.com.