39 lines
1.2 KiB
R
39 lines
1.2 KiB
R
## ----setup, echo=FALSE, results='hide'-----------------------------------
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library(knitr)
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opts_chunk$set(message=FALSE, fig.width=4, fig.height=3)
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## ----basic---------------------------------------------------------------
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library(gridExtra)
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library(grid)
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library(grid)
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N <- 5
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xy <- polygon_regular(N)*2
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# draw multiple polygons
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g <- ngonGrob(unit(xy[,1],"cm") + unit(0.5,"npc"),
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unit(xy[,2],"cm") + unit(0.5,"npc"),
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n=seq_len(N)+2, gp=gpar(fill=1:N))
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grid.newpage()
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grid.draw(g)
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## ----rotated-------------------------------------------------------------
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g2 <- ngonGrob(unit(xy[,1],"cm") + unit(0.5,"npc"),
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unit(xy[,2],"cm") + unit(0.5,"npc"),
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n=seq_len(N)+2, ar=seq_len(N),
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phase=0, angle=pi/(seq_len(N)+2),
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size=1:N+5, gp=gpar(fill=1:N))
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grid.newpage()
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grid.draw(g2)
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## ----ellipse-------------------------------------------------------------
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g3 <- ellipseGrob(unit(xy[,1],"cm") + unit(0.5,"npc"),
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unit(xy[,2],"cm") + unit(0.5,"npc"),
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angle=-2*seq(0,N-1)*pi/N+pi/2,
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size=5, ar=3, gp=gpar(fill=1:N))
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grid.newpage()
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grid.draw(g3)
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