Trim

For questions about EViews Add-ins available from the EViews Add-ins webpage. Note each add-in available on our webpage will have its own individual thread.

Moderators: EViews Gareth, EViews Moderator, EViews Esther

System
Posts: 3
Joined: Thu May 21, 2015 9:18 pm

Re: Trim

Postby System » Fri May 22, 2015 6:32 pm

Will it ever be included in any updates?

System
Posts: 3
Joined: Thu May 21, 2015 9:18 pm

Re: Trim

Postby System » Tue May 26, 2015 6:07 am

Also, on an unrelated note, why does my Trim add-in keep disappearing from the add-in menu from time to time? Also, why do my winsorised values differ from the values of the percentiles I have calculated? For example, eviews gives me an upper winsorised value of 414 but the 0.995 percentile is 371 as calculated by excel.

EViews Gareth
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Re: Trim

Postby EViews Gareth » Tue May 26, 2015 8:41 am

It shouldn't disappear - are you sure you have a series object open?

Hard to say about the numbers without seeing the data.
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pchavan
Posts: 4
Joined: Mon Jun 22, 2015 4:40 am

Re: Trim

Postby pchavan » Mon Jun 22, 2015 4:48 am

Hi, I have downloaded the trim add in but I am not sure how I should use it on a panel data (pool) that I have generated. Can you help please?

EViews Gareth
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Re: Trim

Postby EViews Gareth » Mon Jun 22, 2015 9:07 am

I don't believe it will work on a pool object.
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gishena
Posts: 12
Joined: Tue Jan 19, 2016 9:55 am

Re: Trim

Postby gishena » Sat Apr 09, 2016 11:42 am

If I want to winsorise and the 99th and 1th percentile at the add-in I have to put in the values 0,1 and 0,99 right?

http://s30.postimg.org/tvan3o2e9/image.jpg

EViews Gareth
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Trim

Postby EViews Gareth » Sat Apr 09, 2016 12:37 pm

I think just 1 and 99
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gishena
Posts: 12
Joined: Tue Jan 19, 2016 9:55 am

Re: Trim

Postby gishena » Mon Apr 11, 2016 12:31 am

Are you sure? When I use 0,1 and 0,99 I get results but when I use 1 and 99 I get only n/a values. My best guess is that it would be correct to use 0,01 and 0,99

Santosh
Posts: 26
Joined: Mon Sep 26, 2016 11:00 am

Re: Trim

Postby Santosh » Mon Sep 26, 2016 11:12 am

Hi,
i installed the add-in Trim. Then i winsorized some variables both in EViews and Stata. Results differ. However, i think Stata result is correct because when i winsorized in Excel, i found Stata result is same as Excel result. So, can you help me?

Thank you
Santosh

EViews Gareth
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Re: Trim

Postby EViews Gareth » Mon Sep 26, 2016 11:35 am

Can you provide details/example?
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Santosh
Posts: 26
Joined: Mon Sep 26, 2016 11:00 am

Re: Trim

Postby Santosh » Tue Sep 27, 2016 12:20 am

Hi,
I want to winsorize EGPI3. EViews data sheet shows the following code. I think it is only taking care of the upper outliers.

out = @recode(in<=0.00199999999999967,0.00199999999999967,in)
Modified: 1970 2012 // out = @recode(in>=16.748,16.748,out)

Do I need to post data here?
Since I am new user, i dont know if i can upload EView file.
I tried to attache images but i could not attach them.
Thank you.

EViews Gareth
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Re: Trim

Postby EViews Gareth » Tue Sep 27, 2016 9:15 am

Looks like it is doing both sides.
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Santosh
Posts: 26
Joined: Mon Sep 26, 2016 11:00 am

Re: Trim

Postby Santosh » Wed Sep 28, 2016 7:06 am

Hi Gareth,
Maybe. But winsorized data shows that it only takes care of only upper outliers.
What i am doing is this: open a variable, Proc, Trimming & Winsorizing, then in the q% lowest (highest) observations i am writing 0.05 (0.95). Is it correct?
If yes, but the Stata results and Excel calculations do not match with EViews winsorization.
It would be great if you can help me.
Thank you.

EViews Gareth
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Posts: 11299
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Re: Trim

Postby EViews Gareth » Wed Sep 28, 2016 8:05 am

Every thing you are doing is correct, and when I do it I get winsored results on both ends. Again, can you provide an example/details?
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Santosh
Posts: 26
Joined: Mon Sep 26, 2016 11:00 am

Re: Trim

Postby Santosh » Wed Sep 28, 2016 9:15 am

Thank you Gareth. Kindly note that I am unable to attach EViews file.
Is it fine if i paste data here?


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