Exit Powershell if R errors - r

Question

I have a series of R files I'm calling in powershell. If one errors, I don't want it to carry on to try running the subsequent R scripts. The problem I have is capturing the R error in powershell, and using this to terminate the script. Any ideas?
I've tried this so far to no avail, as the error isn't being caught.
Powershell script:
# loop some scripts, try running them and if they fail then stop the process
foreach ($element in #(1,2,3)) {
Write-Host $element
try{
# minimal working eg of a script that stops early
Rscript -e "stop('error')"
}
catch {
Write-Host 'Rscript failed on run' $element'. Process killed in 10 seconds'
Start-Sleep 10
Exit
}
}
As it doesn't capture the error, the output message is:
1
Error: error
Execution halted
2
Error: error
Execution halted
3
Error: error
Execution halted
Any suggestions would be great! Thank you
EDIT:
Based off of the comment, am using this now (for future reference):
foreach ($element in #(1,2,3)) {
Write-Host $element
# minimal working eg of a script that stops early
Rscript -e "stop('error')"
if ($LastExitCode -ne 0){
Write-Host 'Rscript failed on run' $element'. Process killed in 10 seconds'
Start-Sleep 10
Exit
}
}

Answer 1

The errors are only available in the scope of the RScript not thrown into the PowerShell environment. You might consider to redirect the display output and evaluate the text but using the $LastExitCode is probably easiest.
(I don't have RScript installed but guess you can just capture the output like: $Result = Rscript -e "stop('error')".)
The exitcode can be controlled by the Status property of the Quit command and is apparently automatically set on a stop('error'):
foreach ($element in #(1,2,3)) {
Write-Host $element
# minimal working eg of a script that stops early
Rscript -e "stop('error')"
if ($LastExitCode -ne 0){
Write-Host 'Rscript failed on run' $element'. Process killed in 10 seconds'
Start-Sleep 10
Exit
}
}