How to display coordinates on the static map PNG file as they are received from the GPS in R?
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So, currently I have successfully compiled the program (with **RInside**) for plotting coordinates on the static maps of Google (on **Qt**).

Now, I have to plot the coordinates on the map as they are received from the GPS. 

**Is it possible somehow to *display* the newly plotted points on the png "on the fly"?  
I mean I don't wish to read the png from the *harddisk* every time I receive a new point.** 