Loop and rename variables based on incrementally higher number

[Yvonni Markaki]

I need to loop over 48 variable names and rename them pair_1 pair_2 pair_3 [...] pair_48. However I can't get my counter and loop to work together. I have tried different combos of the following code:

local counter = 0
while `counter' < 49 {
local list M N O P Q R S T U V W X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ BA BB BC BD BE BF BG BH
foreach var of local list {
local i=`counter'+1
rename `var' pair_`i'
}
}

Your help is greatly appreciated!

[Øyvind Snilsberg]

rename (M-BH) pair_#, addnumber

[William Lisowski]

To add to the ideal answer from Øyvind Snilsberg in post #2 , the documentation and explanation is found in the output of help rename group - there is a link to it from the basic help rename output, but it's good to review it and see all the things possible with rename - it is extraordinarily powerful.

Incidentally, this is how a loop would have worked - you only need one loop, not two.

local i = 0
local list M N O P Q R S T U V W X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ BA BB BC BD BE BF BG BH
foreach var of local list {  
    local i=`i'+1
    rename `var' pair_`i'
}

[Yvonni Markaki]

Thank you both! That was helpful in many ways