Having map view without internet connection?
the simple solutions i can think of is, have an image of the map in the background of your chart and then plot the points on top of it. The only drawback of this approach is, when users make selections, the map would not zoom in. And when you are asking for a map without connection i would suggest you can convince your users that without connection only a high level view is available and if they have the connection then they can see the map update dynamically. and to detect if they have the connection or not, you can use a button on UI which could say update map views and set the variable on press.
