Selecting a range within an array?

[Glen Bojsza]

This doesn't seem efficient. If I already have a large array (in my 
case 1000000 rows and only 1 column) then if I want [50000,1] to 
[134000,1] into a new array looping seems like I'm not really taking 
advantage of what already exists in memory (in my case).

Using a repeat loop with the array it takes 8 seconds.

While using a variable and

put (line 50 to 134000 of gte) into newgte

takes 1 second

I will need to do this a number of times( to 16 times ) based on the 
user's selection. So the array can take 108 seconds verses 16 seconds 
to get the requested update.

I am stuck with arrays but I really would like to have a faster 
solution... unless there is something that I'm missing??




On Wednesday, April 7, 2004, at 04:36 PM, Dar Scott wrote:

>
> On Wednesday, April 7, 2004, at 03:18 PM, Glen Bojsza wrote:
>
>> I am trying to see how you can select a range  from an array...
>
> Build a new array by looping over the subscripts.  Skip empty values 
> in building the new array.  This is good for non-sparse or a little 
> bit sparse as in your example.
>
> If the array can be extremely sparse, don't do that, but loop over the 
> keys of the input array:  'repeat for each line in the keys of...'.
>
> Dar Scott
>
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