period in a given frequency

[tvonbrasch]

Hi,

How can I find the start-period that is used in the current sample?

For example, when using the commands

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smpl 2020:3 2020

on a dated workfile on a quarterly, monthly, weekly, or daily frequency, I want to fetch the period "3" of that current sample. How can I do this in a robust way?

I believe I can use the command on a quarterly frequency:

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%tmp = @otods(1) !start = @datepart(@dateval(%tmp), "Q")

but it does not work well on other frequencies. Any suggestions for a robust code that works across different frequencies?
Thomas

[EViews Gareth]

Not sure I follow.

[tvonbrasch]

Hi,

I am interested in the week number, month or quarter of the first observation in the current smpl. for example, in the following I want the scalar !startf to show the number 3 at all frequencies:

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for %f q m w wfcreate(wf=1) {%f} 2015 2025 smpl 2020:3 2020 %tmp = @otods(1) %startf=@mid(%tmp, 6) !startf=@val(%startf) scalar a{%f} = !startf show a{%f} next

but this does not work for the weekly frequency. how can I write this so that it becomes robust across frequencies?
t

[EViews Gareth]

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%freqtype = %f + %f if %f="q" then %freqtype = "q" endif !startf = @datepart(@dateval(%tmp), %freqtype)

Datepart works, its just annoying that the frequency string doesn't match exactly (date functions use "ww" and "mm" for weekly and monthly, respectively).

[tvonbrasch]

great, thanks!