You have to use the Daysloaded function.
If you loop over data which does not exist, the scan will abort.
As an example, here is what I use to extract the last 50 days of data or
whatever exist.

Output = "c:\Quotes Plus Data\Export\50OCV.txt";

DaysToLoad = 50;
DaysRequired = 1;

Integer j, Depth;

Depth := (DaysLoaded-1)*-1;

for j= Depth to 0
do
println symbol:-7 , date(j):-10, open(j):10:3, close(j):10:3, vol(j):14:0;
next j;



donpickdonpick wrote:

> Running Quotes Plus 2.3 on Windows 2000 server fully patched.
>
> I am exporting 10, 20, 50, and 100 day exponential moving averages
> using the scan engine.
>
> Some stocks don't have enough data for a 100 day Ema.
> I know about DaysRequired.
> If there are not 100 days of data the scan aborts.
>
> 1.) How can I write a scan so I can export all stocks and get the
> Ema's listed above and not have the scan abort?  Is there some sort of
> error checking?
>
> 2.) Or do I have to write a separate scan?
>
> 3.) If I have to write a separate scan, what command will search for
> stocks having at least 99 days of data but less than 100 days of data?
> I'd want to eliminate all stocks having 101 or more days of data.
>
>
>
>
>
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