Our API integration involves displaying the change in impressions over time. We pull an AD_PERFORMANCE_REPORT for each active adgroup at 15 min. intervals, calculate the difference over time (by simple subtraction), and finally graph the results. We store the absolute counts at each time of refresh (not the relative difference).
For multiple ad groups, there have been instances where the impressions count will actually decrease compared to its previous values. This decrease is observable in the stored Performance report (absolute) values and does not appear related to our change over time calculations. While this is an infrequent occurrence, it seems quite illogical, and I'm wondering a) whether this is a noted behavior for the reporting API, b) whether our stat-refresh interval must be extended to ensure accuracy. Indeed, the minimum granularity for impressions over time using the Adwords GUI is "daily"... Thanks! -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to adwords-api@googlegroups.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/559f0ab8-0585-44fe-9a39-05e54786badc%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
