Rmark: Error in readChar(z, 16) : invalid UTF-8 input

[adigby]

Thanks @jlaake for your help with this.

I'm having the same problem, but still get the error with version 3.0.0.

The dipper example in `?run.mark.model` returns the error:

Error in readChar(fd, 8 ) : invalid UTF-8 input in readChar()

Problem extracting output. Look at MARK output file to see what is wrong.

I wonder if the problem is related to a special character appearing at the start of a header line in mark???.out. It appears as an 'up arrow' on my machine, and as a square in the following:

 Program MARK - Survival Rate Estimation with Capture-Recapture Data
Compaq(Win32) Vers. 5.1 Apr 2007 28-Jul-2023 10:44:05 Page 002
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Any tips gratefully received!

Many thanks.

Reproducible example:

Code: Select all

> packageVersion("RMark")
[1] ‘3.0.0’


Code: Select all

library(RMark)
test=function()
{
  data(dipper)
  for(sex in unique(dipper$sex))
  {
     x=dipper[dipper$sex==sex,]
     x.proc=process.data(x,model="CJS")
     x.ddl=make.design.data(x.proc)
     Phi.dot=list(formula=~1)
     Phi.time=list(formula=~time)
     p.dot=list(formula=~1)
     p.time=list(formula=~time)
     cml=create.model.list("CJS")
     x.results=mark.wrapper(cml,data=x.proc,ddl=x.ddl,prefix=sex,delete=TRUE)
     assign(paste(sex,"results",sep="."),x.results)
  }
  rm(Male.results,Female.results,x.results)
}
test()


[jlaake]

Try updating MARK. The output header suggests it is version 5.1 from 2007. I believe current version is 9 or 10.


Jeff

[adigby]

Thanks Jeff.

My problem seems to be that there's an old file 'mark.exe' in my MarkPath directory which I can't delete, and RMark is using that. The GUI version on my machine is newer, using a file Mark_Int.exe in the same folder.
I'm on a locked-down (work) machine with no admin rights, so can't delete the old `mark.exe` and create an alias.

Other than MarkPath, I guess there's no way of specifying the MARK version in RMark?

Thanks for your help.

[jlaake]

So can you put the newer mark64.exe or mark32.exe in a directory that you can write to and then point MarkPath to it? If not fine someone that does have admin rights for your computer and have them fix it.