Google ruler tool accuracy full#

But they do give one interesting metric: the weekly peak.

Unlike Placemeter, Google does not give many metrics, just trends. But since we needed the data to line up, we adjusted our data for the purposes of this study.

Google ruler tool accuracy full#

At Placemeter we usually define a day… well, as the full day, from 12 am to 12 am. So if you choose “Monday” in their widget, you get a mix data from Monday and early Tuesday. Google defines a day as the period from 3:30 am on the day (D) to 3:30 am on the following day (D+1). We could not extract the data from Google’s Popular Times graphics, so we took a screenshot of each day's chart. Since December 2015, using a set of temporary cameras that count people anonymously, we’ve been measuring how many people are walking and biking in the Place de la Nation, where cars are going, even how many retirees are playing pétanque.īecause Google said their charts use data from the “last several weeks”, we used 8 weeks of Placemeter data (June 26 to August 22) to make the comparison valid.Īll of the Placemeter data used in this study has a proven accuracy of at least 80%. Placemeter transforms video streams into meaningful data about pedestrian, bike and cars traffic. Popular times are based on average popularity over the last several weeks… On the popular times graph, popularity for any given hour is shown relative to the typical peak popularity for the business for the week.” In their own words: “To determine popular times, Google uses data from users who have chosen to store their location information on Google servers.