Hi Gheorghe,

Thanks for your message and support :)
The reason the page had no views before 4/29/2016is because its name has changed that day [1], and we collect pageviews by name.

You can find the raw data using direct API calls ([2] for new name, [3] for old name, only capital J differs ...), but I have not found a way to view it properly with the pageviews tool.
Being able to request titles that are not current pages could be an interesting feature request -- Ping @MusikAnimal ;)

Cheers !
Joseph

[1] https://fr.wikipedia.org/w/index.php?title=Batman_v_Superman_%3A_L%27Aube_de_la_justice&type=revision&diff=125734639&oldid=125727682
[2] https://wikimedia.org/api/rest_v1/metrics/pageviews/per-article/fr.wikipedia/all-access/user/Batman_v_Superman_%3A_L'Aube_de_la_justice/daily/2015010100/2016123100
[3] https://wikimedia.org/api/rest_v1/metrics/pageviews/per-article/fr.wikipedia/all-access/user/Batman_v_Superman_%3A_L'Aube_de_la_Justice/daily/2015010100/2016123100

On Thu, Apr 13, 2017 at 4:10 PM, Gheorghe Postelnicu <gheorghe.postelnicu@gmail.com> wrote:
Hello,

First of all, thank you for providing such a wealth of information regarding Wikipedia usage. This is really interesting.

I was browsing the pageviews visualization provided by wmflabs and noticed a particular case which surprised. The FR page for Batman v Superman seems to have received no visit whasoever before 4/29/2016:


However, the page existed as early as 2014: 


and similar pages in IT or ES show quite a lot of views:


Any idea why the complete lack of pageviews for the FR page? Even if for some reason the page was not very popular in FR, shouldn't it have received at least some views?

Many thanks in advance for any ideas,
Gheorghe




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Joseph Allemandou
Data Engineer @ Wikimedia Foundation
IRC: joal