Subranges in Igor Pro

Square brackets take points; parentheses take x values. The difference matters.

Function TrimAndPatch(WAVE w)
    Variable first = w[0]
    Variable atHalf = w(0.5)

    w[0, 9] = 0
    w[numpnts(w) - 10, inf] = 0

    Duplicate/O/R=[100, 199] w, window
    Printf "kept %d points around %g\r", numpnts(window), atHalf
End

How it works

1. w[10, 20] is a range of points, ends included.
2. w(0.5) interpolates at an x value instead.
3. A subrange works on the left of an assignment too.

Keywords and builtins used here

• Duplicate
• End
• Function
• Printf
• Variable
• WAVE
• inf
• numpnts
• window

The run, in numbers

Lines

10

Characters to type

218

Tokens

63

Three-star pace

80 tpm

At the three-star pace of 80 tokens a minute, this run takes about 47 seconds.

Type this snippet

Step 2 of 4 in Wave assignment, step 2 of 16 in Waves & analysis.

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