Plots in PNG and JPEG format can easily be converted to many other bitmap formats, and both can be displayed in modern web browsers. The PNG format is lossless and is best for line diagrams and blocks of colour.

2023年4月6日 · theme(legend.title = element_blank(), legend.position = c(0.2,0.9), text = element_text(size=10.5, family="serif")) ggsave("p1.png",width = 6,height = 5) ##ggplot 中直接 …

To save a plot, you need to do the following: Some example code for saving the plot to a png file: This is described in the (combined) help page for the graphical formats ?png, ?bmp, ?jpeg and ?tiff as well as in the separate help page for ?pdf.

In this tutorial you will learn how to save a plot in R to vector graphics and to high resolution, anti-aliased image formats. Export plot with the menu in RStudio and R GUI

2017年2月23日 · You can correct this with the res= argument to png, which specifies the number of pixels per inch. The smaller this number, the larger the plot area in inches, and the smaller the text relative to the graph itself.

2022年1月22日 · 你可以 使用 R中的一些包来同时保存 png 、 pdf 等格式的图片。 例如， 使用 `ggplot2` 绘图 时，你可以 使用 以下代码将图形同时保存为 png 和 pdf 格式： ```r library (ggplot2) # 创建一个 ggplot2 图形 p (mtcars, aes (x = ...

2022年11月29日 · This package provides an easy and simple way to read, write and display bitmap images stored in the PNG format. It can read and write both files and in-memory raw vectors. Please use the canonical form https://CRAN.R-project.org/package=png to link …

You can import an image (PNG or JPEG) to R with the image_read function from the magick package. If you assign the result to an object then you can print it with the print function.

This package provides an easy and simple way to read, write and display bitmap images stored in the PNG format. It can read and write both files and in-memory raw vectors.

Reads an image from a PNG file/content into a raster array. If native is FALSE then an array of the dimensions height x width x channels. If there is only one channel the result is a matrix. The values are reals between 0 and 1. If native is TRUE then an object of the class nativeRaster is returned instead.