[R] Hash Table - Select and Change Data iniside Matrix

[Rantony]

Hi, 

Here i have been a matrix like this, 

*NAME    AGE   PALCE                TRUE/FALSE*
ABC         20      INDIA 
XYZ         30       FRANCE 
PQR        40       USA 
MNO     30        KENIYA 
DEF        25        AUSTRALIA 

Here,* TRUE/FALSE*  Column containing empty values. 

So my requirement what is , need to change all the *TRUE/FALSE *column value
into "*TRUE*" where *AGE = 30*. 
Note :- i *dont want* to use* any loop *and do. Main intension is avoid
loop,bcz there is a bulk of data. 

Final Matrix should be like this 
*NAME    AGE   PALCE                TRUE/FALSE*
ABC         20      INDIA                                                                       
XYZ         30       FRANCE                     TRUE 
PQR        40       USA                                                                         
MNO     30        KENIYA                      TRUE 
DEF        25        AUSTRALIA 


Immediate Help Requied.  

Your, 
Antony.


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