MCQOPTIONS
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MCQOPTIONS
| 1. |
If I want to save a plot to a PDF file, which of the following is a correct way of doing that? |
| A. | Construct the plot on the screen device and then copy it to a PDF file with dev.copy2pdf() |
| B. | Construct the plot on the PNG device with png(), then copy it to a PDF with dev.copy2pdf() |
| C. | Open the PostScript device with postscript(), construct the plot, then close the device with dev.off() |
| D. | Open the screen device with quartz(), construct the plot, and then close the device with dev.off() |
| Answer» B. Construct the plot on the PNG device with png(), then copy it to a PDF with dev.copy2pdf() | |