[igraph] How to plot a figure at centre layout iin the R Graphics window?

[Zhijiang Wang]

Dear all,
I use barplot for ploting a figure, it seemed that the default layout of ploting is left.

Could anybody tell me how to plot a figure at centre layout in the R Graphics window?

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Best wishes,

Zhijiang Wang

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PhD Candidate

Room 407, East Segment, Material Science Building,

The International WIC Institute,

College of Computer Science and Technology,

Beijing University of Technology,

Beijing, China.