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Re: st: Translate Google Trends date system into Stata date system


From   Sergiy Radyakin <serjradyakin@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Translate Google Trends date system into Stata date system
Date   Wed, 1 May 2013 12:21:56 -0400

tempvar d1 d2
generate `d1'=substr(googledate,1,10)
generate `d2'=substr(googledate,-10,.)
generate date1=date(`d1',"YMD")
generate date2=date(`d2',"YMD")
format date1 %td
format date2 %td
list




On Tue, Apr 30, 2013 at 3:13 PM, Nick Cox <njcoxstata@gmail.com> wrote:

> That's fine.
>
> But in order that no-one gets confused:
>
> 1. -parse()- here is the name of an option.
>
> 2. -parse- is a quite distinct and out-of-date command.
>
> The connection is only that I had parsing in mind when I wrote the
> original version of -split-, itself a rewrite of -strparse- by Michael
> Blasnik and myself, still visible on SSC.
>
>
> Nick
> njcoxstata@gmail.com
>
>
> On 30 April 2013 20:05, Stephen Cranney <scranney@sas.upenn.edu> wrote:
>> The split and -parse- commands worked perfectly for my purposes. Thank you.
>>
>> On Tue, Apr 30, 2013 at 2:38 PM, Phil Schumm <pschumm@uchicago.edu> wrote:
>>> On Apr 30, 2013, at 1:27 PM, Stephen Cranney wrote:
>>>> I'm trying to get long series of dates I downloaded from Google Trends to function in Stata.  Unfortunately, Google Trends's way of doing dates makes this difficult. An example value from a single observation:
>>>>
>>>>     2004-01-04 - 2004-01-10
>>>>
>>>> This represents the week of January 04, 2004 to January 10, 2010.  However, Stata is (understandably) reading this as a string variable.  Is there a way to take variables like this and break them into a beginning date and ending date or something similar?
>>>
>>>
>>> Several ways, e.g.,
>>>
>>>     if regexm("2004-01-04 - 2004-01-10","^([0-9\-]+) - ([0-9\-]+)$") ///
>>>         di %td date(regexs(1),"YMD"), %td date(regexs(2),"YMD")
>>>
>>>
>>> -- Phil
>>>
>>>
>>> *
>>> *   For searches and help try:
>>> *   http://www.stata.com/help.cgi?search
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>>> *   http://www.ats.ucla.edu/stat/stata/
>>
>>
>>
>> --
>> Stephen Cranney
>>
>> PhD Student
>> Graduate Group in Demography
>> University of Pennsylvania
>>
>> *
>> *   For searches and help try:
>> *   http://www.stata.com/help.cgi?search
>> *   http://www.stata.com/support/faqs/resources/statalist-faq/
>> *   http://www.ats.ucla.edu/stat/stata/
>
> *
> *   For searches and help try:
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> *   http://www.ats.ucla.edu/stat/stata/

*
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