Modify object name for bounding box containing data
Create 'bounding_box' function to make a square bounding box
Create 'bounding_box' function to provide a square bounding box
Redefine 'bbox' as 'bbox_data'
Remove 'bbox_width' and 'bbox_height'
Remove statements related to bounding box midpoints
Recursively determine the map's bounding box extents
Reference 'bbox_map' instead of 'bbox'
Reference 'bbox_map' instead of 'bbox'
In calls to 'ggsave', generate square PDF files
In call to 'ggmap', set exent to 'device'
Determine the distance away from the center-point