## Creating Seasonal Factor for multiple variables at once

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meganmao
Posts: 12
Joined: Thu Aug 01, 2013 10:40 am

### Creating Seasonal Factor for multiple variables at once

I'm trying to create a seasonal factor for multiple variables in one sweep. How can I do this?
Last edited by meganmao on Fri Aug 02, 2013 11:34 am, edited 1 time in total.

EViews Gareth
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### Re: Creating Seasonal Factor for multiple variables at once

Could you be more specific?
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meganmao
Posts: 12
Joined: Thu Aug 01, 2013 10:40 am

### Re: Creating Seasonal Factor for multiple variables at once

Right. My bad!

So I have production data that is seasonal. I open the variable, go to Proc>Seasonal Adjustment>Census X12

My options are the following:

X11 Method: Multiplicative
Trend Filter (Henderson): Auto (X12 default)

Seasonal Filter: Auto (X12 default)

Component Series to Save
[checked] Final seasonal factors (_SF)

I want to do this for all the variables I have in one sweep

EViews Gareth
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### Re: Creating Seasonal Factor for multiple variables at once

You'll have to write a program to do it.
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meganmao
Posts: 12
Joined: Thu Aug 01, 2013 10:40 am

### Re: Creating Seasonal Factor for multiple variables at once

How can I get started? I'm new to e-views programming but I've had programming experience in other statistical software.

I just can't find any code to look at that reflects the seasonal factor option. Or should I program based off the formula used to calculate the seasonal factor?

EViews Gareth
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### Re: Creating Seasonal Factor for multiple variables at once

Look up the FOR loop in the Command and Programming reference.

Look up X12 in the SERIES section of the Object Reference.
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Infometrics
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Joined: Sun Jul 20, 2014 9:40 pm

### Re: Creating Seasonal Factor for multiple variables at once

Hi meganmao, did you work out how to do this? I'm trying to do the same thing.

NicolasR
Posts: 86
Joined: Mon Nov 04, 2013 6:22 pm
Location: Here

### Re: Creating Seasonal Factor for multiple variables at once

You can use the GroupX12 add-in.

Infometrics
Posts: 4
Joined: Sun Jul 20, 2014 9:40 pm

### Re: Creating Seasonal Factor for multiple variables at once

Thanks Nicolas,

I ended up running the seasonal adjustment manually and copying the command code (at the top of the seasonally adjusted series) into a programme so I can batch process the data into seasonally adjusted series - just if anyone looks this up and wants another option as to how to do this.

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