if/else scope
On 11/15/2011 06:46 PM, Kevin Burton wrote:
What is wrong with the following?
x<- 1:2
if(x[1]> 0)
{
if(x[2]> 0)
{
print("1& 2> 0")
}
else
{
print("1> 0")
}
}
else
{
if(x[2]> 0)
{
print("2> 0")
}
else
{
print("NONE> 0")
}
}
Gives me
Error: unexpected 'else' in "else"
What am I missing?
Kevin
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______________________________________________ R-help at 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.
x <- 1:2
#this works
if (x[1] > 0)
{ if (x[2] > 0) print("1 & 2 > 0") else print("1 > 0") } else
{ if (x[2] > 0) print("2 > 0") else print("NONE > 0") }
#this works
if (x[1] > 0)
{ if (x[2] > 0) print("1 & 2 > 0")
else print("1 > 0") } else
{ if (x[2] > 0) print("2 > 0")
else print("NONE > 0") }
#this doesn't
if (x[1] > 0)
{ if (x[2] > 0) print("1 & 2 > 0")
else print("1 > 0") }
else { if (x[2] > 0) print("2 > 0") else print("NONE > 0") }
Conclusion: if-else in R is not quite free-form.
Philippe Baril Lecavalier