rect(0 + 0.2*xcm,0 - 0.2*ycm,0.95 + 0.2*xcm,0.15 - 0.2*ycm, col="gray", border = NA) 4、繪制一個白的底作為直尺 1 rect(0,0,0.95,0.15, col = "white") 5、標(biāo)注刻度 1 2 3 segments(seq(1,11,0.1)*xcm,0,seq(1,11,0.1)*xcm, c(rep(c(0.5, rep(0.25,4), 0.35,rep(0.25...
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