From here:http://cran.r-project.org/web/packages/ggmap/ggmap.pdf
ggmap plots the raster object produced by get_map.
From: http://qwt.sourceforge.net/class_qwt_raster_data.html
QwtRasterData defines an interface to any type of raster data
So, following way the data resultant from get_map is saved in a rda (raster) file.

Qt Code: 
  1. mapImageData <- get_googlemap (c (lon=-74.0087986666667, lat=40.7106593333333), zoom=15)
  2. save (mapImageData, file="savedMap.rda")
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Will it be possible for me to display that resultant raster data on QwtRasterData class?

  • What more information should I present here to know whether it can be done and how?
  • Should I present a sample of raster data?
  • Do I need to convert that raster data in a particular format before it can be loaded on the Qt widget?