I'm now trying to read.zoo in a rather long txt file with two columns: date/time and value in kW e.g. 432.2189 The read.zoo function finally ran without errors but not sure it is correct. I took the header off, and put in commas and added a " at the beginning and " at the end.
z=read.zoo("Kevin-0-comma-ITPower.txt","%m/%d/%Y %H:%M:%S",header=FALSE,sep=",",index.column=1) library(zoo) library(chron) # 1 minute spline fit m1 <- times("00:01:00") g <- seq(trunc(start(z), m1), end(z), by = m1) na.spline(z, xout = g) Error in xy.coords(x, y) : (list) object cannot be coerced to type 'double' What is causing the "double" error. Do I need to specify the types something like.... colClasses = c( "character", "double") Here is a paste of the beginning of the txt file (6510 lines) "10/11/2011 23:00:06,432.12 10/11/2011 23:02:09,432.42 10/11/2011 23:05:00,432.42 10/11/2011 23:07:10,432.12 10/11/2011 23:10:01,432.12 10/11/2011 23:12:12,432.22 10/11/2011 23:15:00,432.22 ... ... ... 10/31/2011 22:55:08,362.57" -- View this message in context: http://r.789695.n4.nabble.com/error-with-read-zoo-Error-in-xy-coords-x-y-list-object-cannot-be-coerced-to-type-double-tp4398709p4398709.html 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.