R 画图保存为文件

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pdf("h20.pdf",width =6,height = 5 )

plot ...

dev.off()

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第一种png格式
png(file="myplot.png", bg="transparent")
画图程序
dev.off()

 

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第二种jpeg格式
jpeg(file="myplot.jpeg")
画图程序
dev.off()
文件都放在getwd()里了

 

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第三种pdf格式
pdf(file="myplot.pdf")
画图程序
dev.off()

 

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下面是一个具体的例子
png(file="myplot.png", bg="transparent")
plot(1:10)
rect(1, 5, 3, 7, col="white")
dev.off()
所有文件都放在getwd()里面了，你只需输入
getwd()
就可以看到文件所在位置

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Description

Graphics devices for BMP, JPEG, PNG and TIFF format bitmap files.

Usage

bmp(filename = "Rplot%03d.bmp",
    width = 480, height = 480, units = "px", pointsize = 12,
    bg = "white", res = NA, family = "", restoreConsole = TRUE,
    type = c("windows", "cairo"), antialias)

jpeg(filename = "Rplot%03d.jpg",
     width = 480, height = 480, units = "px", pointsize = 12,
     quality = 75,
     bg = "white", res = NA, family = "", restoreConsole = TRUE,
     type = c("windows", "cairo"), antialias)

png(filename = "Rplot%03d.png",
    width = 480, height = 480, units = "px", pointsize = 12,
    bg = "white", res = NA, family = "", restoreConsole = TRUE,
    type = c("windows", "cairo", "cairo-png"), antialias)

tiff(filename = "Rplot%03d.tif",
     width = 480, height = 480, units = "px", pointsize = 12,
     compression = c("none", "rle", "lzw", "jpeg", "zip", "lzw+p", "zip+p"),
     bg = "white", res = NA, family = "", restoreConsole = TRUE,
     type = c("windows", "cairo"), antialias)

Arguments

filename	the name of the output file, up to 511 characters. The page number is substituted if a C integer format is included in the character string, as in the default, and tilde-expansion is performed (see path.expand). (The result must be less than 600 characters long. See postscript for further details.)
width	the width of the device.
height	the height of the device.
units	The units in which height and width are given. Can be px (pixels, the default), in (inches), cm or mm.
pointsize	the default pointsize of plotted text, interpreted as big points (1/72 inch) at res ppi.
bg	the initial background colour: can be overridden by setting par("bg").
quality	the ‘quality’ of the JPEG image, as a percentage. Smaller values will give more compression but also more degradation of the image.
compression	the type of compression to be used.
res	The nominal resolution in ppi which will be recorded in the bitmap file, if a positive integer. Also used for units other than the default. If not specified, taken as 72 ppi to set the size of text and line widths.
family	A length-one character vector specifying the default font family. The default means to use the font numbers on the Windows GDI versions and "sans" on the cairographics versions.
restoreConsole	See the ‘Details’ section of windows. For type == "windows" only.
type	Should be plotting be done using Windows GDI or cairographics?
antialias	Length-one character vector. For allowed values and their effect on fonts with type = "windows" see windows: for that type if the argument is missing the default is taken from windows.options()$bitmap.aa.win. For allowed values and their effect (on fonts and lines, but not fills) with type = "cairo" see svg.

 

 

 

REF

https://blog.csdn.net/fengziyun/article/details/7757779?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.pc_relevant_is_cache&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1.pc_relevant_is_cache