Wave references in Igor Pro

A WAVE reference is how a function holds onto a wave without knowing its name.

Function Process(String name)
    WAVE/Z src = $name

    if (!WaveExists(src))
        Print "no wave called", name
        return -1
    endif

    Duplicate/O src, $(name + "_smooth")
    WAVE dest = $(name + "_smooth")
    Smooth 5, dest

    return 0
End

How it works

1. WAVE w = name binds a reference; $ binds one from a string.
2. WaveExists is the check to make before using one.
3. /Z on the reference stops the compiler complaining when it may be missing.

Keywords and builtins used here

• Duplicate
• End
• Function
• Print
• Smooth
• String
• WAVE
• WaveExists
• endif
• if
• return

The run, in numbers

Lines

14

Characters to type

215

Tokens

53

Three-star pace

70 tpm

At the three-star pace of 70 tokens a minute, this run takes about 45 seconds.

Type this snippet

Step 3 of 4 in Waves, step 3 of 18 in Language basics.

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