if() command

Hallo

Hi everyone ! 

Could you please help me with this problem ? 

I??ve trying to write a code that assign to a variable the content 
from
another, but all I??ve got is a message error. For example: 

if (age <=10) {group == 1} 
else if (age > 10 & age <= 20) {group == 2} 
else {group == 3} 
if you put your statement on one line it works (at least it does not  
give you syntax error) but the result is hardly what you really  
expect 

age<-sample(seq(10,50,10), 20, replace=T) 

if (age <=10) {group <- 1} else if (age > 10 & age <= 20) {group 
<- 2} else {group <- 3} 
if (age <=10) {group == 1} else if (age > 10 & age <= 20) {group 
== 2} else {group == 3} 

Maybe you want something like 

group<-as.numeric(cut(age,c(0,10,20,100))) 

but it is only guess 

HTH 
Petr

Syntax error 

Or 

if (age <=10) {group == 1} 
else (age > 10 & age <= 20) {group == 2} 
else {group == 3} 

Syntax error 

I know that is possible to find the solution by ifelse command or 
even
recode command, but I??d like to use this way, because I can add 
another variable as a new condition and I believe to expand the 
possibilites. 

Thanks, 
Mauricio 

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Petr Pikal
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