leaflet
Is there a difference between the actual zooming when using the setView and panTo methods in Leaflet?
map.setView([52, 13]);
map.panTo([52, 13]);
The zooming effect looks identical to me, or am I missing something? Are they the same unless you use the optional parameters?
Leaflet is a Javascript Map Client API - it requests images from services like MapBox and provides the panning / zooming experience you'd see in Google Maps or similar. You'd use the two together - MapBox provides tiles of maps, and Leaflet makes them usable in web pages.
If I understand what you mean, you use addCircles() instead of addCircleMarkers(). Here's some (totally arbitrary) example code:
#create dummy dataframe
lon <- c(-80, -80.2, -80.4, -80.1, -80.3)
lat <- c(37, 37.05, 37.1, 37, 37.07)
num <- as.numeric(c(6000, 400, 10, 5000, 10))
x <- data.frame(lat, lon, num)
#plot with leaflet
leaflet(data = x) %>%
addTiles() %>%
addCircles(lat = ~lat, lng = ~lon, radius = ~num)
Here's the initial map:
And zoomed twice:
Best Answer
There is no difference. In fact, have a look at Leaflet's source code for
panTo:And
setView:As you can see,
panTo()just callssetView()with the map's current zoom level, andsetView()will also use the map's current zoom level if the second parameter isundefined.