subscript used on non-accessible variable

[Rskm]

i have seen many pointing out issues related to this, i tried reading through them - still unable to solve mine.. i have a script which reads certain lines based on a search item, this is an iterative process - the ldflst_file gets updated for each iteration and the script finds the line number which has the search item. this works perfectly for few iterations, but stops in some cases abruptly with the error = 

Subscript used on non-accessible variable

$aRead^ ERROR

I have verified that the search item is present in the file. what could be the reason for this code to stop in certain cases. thanks for help

my code below (partial).. full code is in attachment

 

local $aRead=FileReadToArray($ldflst_file)

global $ldflst_var1=" JOINT  LOAD       FORCE(X)        FORCE(Y)        FORCE(Z)       MOMENT(X)       MOMENT(Y)       MOMENT(Z)"

 

for $i= 0 to $ldflst_totlines    ; ldflst_totlines is total number of  lines in the file 'ldflst_file'

    if $aRead[$i]=$ldflst_var1 Then

        $ldflst_LFound=$i

        ExitLoop
        else
        EndIf
Next

 

 

nomo_new1.au3

[Melba23]

Rskm,

You do no error-checking in that script to confirm that you have a valid array before you  loop through it. You might think that there is no possibility of error, but obviously there is one - so add some checking to see just why the array is not present when you think it should be. Then you will have answered your own question.

M23

[BrewManNH]

That error is telling you that no array was created when you did the FileReadToArray, which means that function failed to read the file for some reason. find out why that is and you'll probably fix the error.

[Earthshine]

look at the help file for Arrays. I believe you want to loop on your UBound() (Upper Boundary) of your array. remember you read in a file to ldflst_totlines  and then you should loop 0 to ldflst_totlines -1, right?

you are looping one too many times?

Edited March 20, 2018 by Earthshine

[Rskm]

thanks melba23,brewmanNH for the suggestion.. i am new with autoit.. how do i make sure the array is created ? sleep option will work  - so that i put sufficient time before/after reading the array.. this error does not happen always, so i cannot check it manually for each iterations - how to ensure that the array is created.. thanks again

[JLogan3o13]

@Rskm the help file is your friend. Look at IsArray.

Check first to ensure the array exists, second that it contains the data you expect (_ArrayDisplay in the help file).

Edited March 20, 2018 by JLogan3o13

[Earthshine]

I made a few minor corrections, this might work now. You are creating the array by FileReadToArray. the loop should work and corrected the Global definition, you can't define globals every time in a loop

 

test.au3

Edited March 20, 2018 by Earthshine