Initial data come from Origin-Destination surveys from to Once transformed, these data have been used to estimate the ambient population in every district at exact hours Number and proportion of ambient population aggregated by district and hour are estimation : they are subject to statistical margins of error.
To choose the city region you want to observe, please selection the city region in the drop-down menu or use the magnify tool from a search by name. To get informations about indicators, click button on the right side.
With links displayed on mouseover , you can see their district of residence not available on touch screens. At the top of the screen, click play button in the timeline to animate map and graphics according to the 24 hours of the day. Select one district by clicking on the map. Have a look at the chart entitled "In the selected district" where you can follow hourly variations of ambient population for each group of the selected indicator in the district under consideration. Colours have the same colour code than in the indicator menu.
Here, last transportation mode used by present population in the selected district was coloured in blue for public transportation, in pink for private motor vehicle and in green for soft mobility. By clicking on 'Unique' mode, you can limit representation of the hourly variations for only one subgroup :. The block of graphs entitled "In the whole region" displays two segregation indices computed from every district of the region for each hour of the day.
Duncan Index also called Dissimilarity Index measures the evenness with which a specific population subgroup is distributed across districts in a whole region. This index score can be interpreted as the percentage of people belonging to the subgroup under consideration that would have to move to achieve an even distribution in the whole region.
