Conditions in Igor Pro

if/elseif/else, and the ternary operator for the small cases.

Function Grade(Variable score)
    if (score >= 90)
        return 3
    elseif (score >= 70)
        return 2
    elseif (score > 0)
        return 1
    else
        return 0
    endif
End

Function Clip(WAVE w, Variable limit)
    w = w > limit ? limit : w
End

How it works

1. Every if needs an endif, even a one-line one.
2. Igor has no booleans: zero is false and anything else is true.
3. ?: is an expression, so it works inside a wave assignment.

Keywords and builtins used here

• End
• Function
• Variable
• WAVE
• else
• elseif
• endif
• if
• limit
• return

The run, in numbers

Lines

15

Characters to type

207

Tokens

54

Three-star pace

75 tpm

At the three-star pace of 75 tokens a minute, this run takes about 43 seconds.

Type this snippet

Step 1 of 4 in Flow control, step 8 of 18 in Language basics.

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