lattitude/longitude instead of countries in Mapchart?

[M-Sila]

I tried to prepare ddf project in order to use mapchart. Is it possible to use the mapchart in gapminder offline with my data? Currently I can use just Bubbles, Rankings and line when I want to import data. If so, how? can I give it lattitude/longitude, because my data is about specific locations in the see not countries! Thanks