Return array from function

[David McFarlane]

Eline,

Glad that liw solved it for you.  I just want to add a few more details 
in case anyone else stumbles on this thread.

By *default*, array indexes in E-Prime/E-Basic start at 0.  But you may 
change that to start instead at 1 using the "Option Base 1" statement in 
the global User script area -- see the Option Base topic in the E-Basic 
Help facility.

You may also override the default on any array by explicitly declaring 
its bounds in the Dim statement -- see the Dim topic in the E-Basic 
Help.  E.g., if you were to say

	Dim U(1 to 3, 1 to 3) As Variant

in your original code, then the array initialization loop should work 
just fine.

Exactly because this array index issue can get so confusing, I have 
taken to always explicitly declaring the index bounds when I declare 
arrays, that way there is no question.  I would advise you and everyone 
else to do the same.

-- David McFarlane


liwenna wrote:
> Must admit that I do not understand the code but I do happen to know
> that array's start counting levels at 0, so the "top left" cell in a
> 3*3 array is U(0,0) and the bottom right U(2,2). => if you let i and j
> run from 0 to 2 rather than 1 to 3, that may help?
> 
> best,
> 
> liw
> 
> 
> On Dec 12, 11:48 am, ELine <elin... at hotmail.com> wrote:
>> Hello again
>>
>> I have problems returning a 3x3 array from a function. I have an
>> experiment with 9 conditions and to keep things simple I organized
>> them in a 3x3 array. I want to keep track on the number of trials pr
>> condition by updating this array in the end of each trial using a user-
>> specified function that returns a 3x3 array containing one 1 (rest is
>> 0s) specifying which trial has been run.
>>
>> my problem is not with the function itself, but with returning a 3x3
>> array. I've tried something like this (but of course more
>> complicated):
>>
>> Function UpdateArray(A As Integer, B As Integer) As Variant
>>     Dim U(3,3) As Variant
>>
>>      for i= 1 to 3
>>         for j= 1 to 3
>>         U(i,j)=0
>>         next j
>>      next i
>>      U(A,B)=1
>>
>>     UpdateArray=U
>>
>> End Function
>>
>> When compiling E-Prime returns the error: Cannot assign whole array. I
>> also tried with integer instead of variant, but it still doesn't work.
>> And I've tried including ReDim, but without any luck.
>>
>> Can anyone help me?
>>
>> ELine

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