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Odd behaviour in array indexing ? [message #34186]

Fri, 21 February 2003 07:11

mwvogel
Messages: 9
Registered: February 2003

Junior Member

Today I realized something is amiss in IDL
When I do
index = [1,0,2,3,1,2,3,4]
m = FLTARR(8)
d = FINDGEN(8)
m[index] = d
print, m
1.00000 4.00000 5.00000 6.00000 7.00000
0.000000 0.000000 0.000000

Now I would have assumed that IDL would automatically *add* the numbers with
identical indices. Not doing
so is a potential performance penaly, right ? Or am I mistaken....

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Odd behaviour in array indexing ?

By: mwvogel on Fri, 21 February 2003 07:11

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