How to turn off automatic ipolation in eViews 8?

[Liu]

Hi,
I have a workfile whose range is from year 1900 to 2020. When I fetch a series
that has actual data from 1950 to 2011, eViews 8 automatically ipolates the series
to the beginning and the end of the entire workfile.

How can I set up eViews 8 like in eViews 7 that the series is not automatically ipolated when fetched to a bigger workfile?

Thanks in advance.

[EViews Gareth]

There is no automatic interpolation. EViews does not fill in data when fetching to a larger workfile.

Perhaps you could provide more details as to what you're doing, exactly?

[Liu]

I think maybe I should not call it ipolate but expolate or extend.

what happened is like this: I have an existing workfile that is structured as:

wfcreate m 1900m1 2015m1

When I fetch a monthly series that has data from 1990m1 to 2013m9, eViews 8 filled from 1900m1 to 1989m12
(as well as from 2013m12 to 2015m1) with linear interpolated data instead of remaining NA as it was.

Maybe some other reason caused it but I run the very same program on eviews 7 and everything is fine.

[EViews Gareth]

What you're describing should not happen, and indeed when I just tested it on my EViews 8, did not happen.

Could you provide the program and database?

[Liu]

I just realized that although I didn't use ipolate directly, one of the subroutine that I used included this command and it expolated the series.
It's all good now. Thanks so much for your help.

Liu.