String list to wave labels

// this snippet takes a semicolon separated list and writes each element as dimension label in the required dimension.
//Example:
//Make/N=(2,3) M_w
//List2WaveLabels(M_w, "aa;bb;cc", 1)
//edit M_w.ld

function List2WaveLabels(w, str, dim)
    wave/Z w
    string str
    variable dim        // e.g. 0 for rows, 1 for colums
   
    variable nPnts = DimSize(w, dim)
   
    if (ItemsInList(str) != nPnts)
        printf "Error: Dimension %g of wave %s has %g entries but the string has %g.", dim, NameOfWave(w), nPnts, ItemsinList(str)
        return -1
    endif
   
    variable i = 0
    for(i=0; i<nPnts; i+=1)
        SetDimLabel dim, i, $StringfromList(i, str), w
    endfor
   
    return 1
end
Nice script!

Minor nit:
I would either use Wave w in the parameter declaration, or use Wave/Z w and later check for existence with
if(!WaveExists(w))
    return -1
endif

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