CODEWITHSUNDEEP
loopsforeachstata
user319487
user319487

Reputation:

In Stata, how do I correctly use if statement inside foreach loop?

I'm trying to use if statements to assign correct labels for my graphs created inside foreach loop in Stata:

foreach major in var1 var2 {

    * conditional labelling
    if "`major'" == "var1" {
        local ytitle "title for var1"
    }
    else if "`major" == "var2" {
        local ytitle "title for var2"
    }

    di in red "____________"
    di in red "`major'"
    di in red "`ytitle'"
    di in red "____________"

}

The output of this exercise is

____________
var1
should be var1
____________
____________
var2
should be var1
____________

My question is - why isn't the local changed in the second instance of the loop?

Upvotes: 2

Views: 12841

Answers (1)

Nick Cox
Nick Cox

Reputation: 37183

The example is a little confusing, as the words "should be" in the output should be (so to speak) "title for", matching the code. That aside, your bug is an unmatched single quote. Try 

foreach major in var1 var2 {

    * conditional labelling
    if "`major'" == "var1" {
       local ytitle "title for var1"
    }
    else if "`major'" == "var2" {
       local ytitle "title for var2"
    }

    di in red "____________"
    di in red "`major'"
    di in red "`ytitle'"
    di in red "____________"

}

Upvotes: 5

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