| gfile | R Documentation | 
Opens a graphic device depending on the file extension.
gfile(filename, width, height, ...)
| filename | path to the image file to create. | 
| width | output width | 
| height | output height | 
| ... | other arguments passed to the relevant device function
such as  importFrom grDevices bmp jpeg pdf png svg tiff | 
The value of the called device function.
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