I'm having a few problems with ARRAY SORT

[Alex Chambers]

Hi,

I have an array of type single which I am trying to sort with ARRAY SORT. I am finding after ARRAY SORT, the whole array is filled with zeroes!!! I am confused...

My code is this:

{{GLOBAL VARS DEFINITION FILE}}

GLOBAL opt_capital() AS SINGLE



SUB mainloop()

REDIM opt_capital(200000)

... code to populate opt_capital with values ...

END SUB



SUB Sort()

ARRAY SORT opt_capital()

msgbox(str$(opt_capital(10)))
msgbox(str$(opt_capital(1000)))
msgbox(str$(opt_capital(175000)))

END SUB


Mainloop() correctly populates opt_capital() with values - I have checked.

Each msgbox shows "0"


Can anyone advise please? Thanks.

[Eric Pearson]

Is ERR returning a value?

-- Eric

[Knuth Konrad]

Test if there are values present *before* sorting.

SUB Sort()

msgbox(str$(opt_capital(10)))

ARRAY SORT opt_capital()

[...]

END SUB

[Russ Srole]

Is it possible that you've got an array that is not completely filled? In other words, if the array is dimmed to 20 and 0 to 10 are set to > 0 but 11 to 20 are 0, then if you sort without setting the upper element limit, then it will resort so that the 11 to 20 elements are placed in 0 to 8.

[Alex Chambers]

Hi,

Err is not returning a value - I tried using TRY/CATCH...

There are values beforehand:

msgbox(str$(opt_capital(0))) shows 202843
msgbox(str$(opt_capital(10))) shows 101234


And I know that opt_capital() is filled all the way to 200000

[Alex Chambers]

Actually - Russ, you were correct - I just solved it

There was an error in my SUB filling opt_capital() from 100000 to 200000. Therefore the sort was returning "0" as expected.

Thanks for your help.

[Fred Buffington]

I think Russ's comment is the key (without seeing the population code).

Perhaps redimming 1 at a time when populating
LC%=LC%+1
REDIM PRESERVE MYARRAY(LC%)
MYARRAY(LC%)=some value

then looking at the end values. (from ubound back)

[Russ Srole]

Well, redim preserve is a bit slow, so I would not do that except in large chunks. I usually set the top end of the array & when I fill it and get there then I redim preserve to some logical larger amount.