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What is the best way to access variable if I know variable string and variable index?

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What is the best way to acess variable if I know variable string and variable index
varString="a"
varIndex=3
and I want to use variable a3
 

Re: skill question

nth(3 a3)="xyz"
 

Re: skill question

Actually I want to declare some values that does not exist. I just know the beginning of name as a string , and index as a number.

For example:
name should start with value stored in variable nameString="a" I need 5 variables:

a1=1
a2=4
a3=9
a4=16
a5=25


One way to do this is to write theese equations as astring to a file and then load it.

out=outfile("test")
for( i 1 5
fprintf(out "%s%d%s%d%s" nameString i "=" i*i "\n" )
)

close(out)
load("test")
 

Re: skill question

Sure you got the right forum to ask this question?
 

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