Display charts only at certain levels of zoom

[FrancoisGuillem]

Depending on the level of zoom, user could display more or less charts. For instance at a low level of zoom, there would a unique chart for all european countries. By zooming in this chart would disappear and country charts would be displayed

[FrancoisGuillem]

Two ways to implement this:

• Use markercluster like here: http://bl.ocks.org/gisminister/10001728 . The result is very nice, but this may require lot of modifications but the user would not have to do anything to benefit the new feature.
• Make charts visible only at certain levels of zoom. In this case, user would be responsible to group data and declare the zoom levels.

[kuzmenkov111]

+1

[statkclee]

+1