如何刪除EPS文件的設備頁邊距

Question

我正在將一些圖導出到EPS文件。我的代碼是

setEPS() 
postscript("test.eps") 
par(mar=c(0,0,0,0)) 
plot(1:10) 
dev.off() 

但我發現繪圖區周圍有（設備）邊距。如何刪除它們？謝謝。

Answer 1

這不是保證金。注意您的代碼生成的EPS中沒有座標軸，刻度線或圖框。沒有空間來繪製這些，情節框架將完全位於EPS的邊緣。

您所看到的是R添加到軸限制以確保繪圖字符位於繪圖區域內而不是邊緣上的額外填充。 IIRC這個填充是4％。

您可以分別使用xaxs和yaxs繪製x軸和y軸的參數來關閉此功能;看到?par

‘xaxs’ The style of axis interval calculation to be used for the 
     x-axis. Possible values are ‘"r"’, ‘"i"’, ‘"e"’, ‘"s"’, 
     ‘"d"’. The styles are generally controlled by the range of 
     data or ‘xlim’, if given. 
     Style ‘"r"’ (regular) first extends the data range by 4 
     percent at each end and then finds an axis with pretty labels 
     that fits within the extended range. 
     Style ‘"i"’ (internal) just finds an axis with pretty labels 
     that fits within the original data range. 
     ** editted for brevity ** 
     (_Only ‘"r"’ and ‘"i"’ styles have been implemented in R._) 

默認爲"r"，改用：

setEPS() 
postscript("test.eps") 
par(mar=c(0,0,0,0), xaxs = "i", yaxs = "i") 
plot(1:10) 
dev.off()