img <- image_read("Logo.png")
img <- image_scale(img,"200")
img <- image_scale(img, "x200")
g <- rasterGrob(img)
size = unit(4, "cm")
heights = unit.c(unit(1, "npc") - size,size)
widths = unit.c(unit(1, "npc") - size, size)
lo = grid.layout(2, 2, widths = widths, heights = heights)
grid.show.layout(lo)
grid.newpage()
pushViewport(viewport(layout = lo))
pushViewport(viewport(layout.pos.row=1:1, layout.pos.col = 1:2))
print(p, newpage=FALSE)
popViewport()
pushViewport(viewport(layout.pos.row=2:2, layout.pos.col = 2:2))
print(grid.draw(g), newpage=FALSE)
popViewport()
g = grid.grab()
grid.newpage()
grid.draw(g)
rm(list=ls())
我找到了另一个教程,并且在尝试此操作后,它根本没有显示任何内容。
mypng <- readPNG('Logo.png')
print(mypng)
logocomp <- p + annotation_raster(mypng, ymin = 4.5,ymax= 5,xmin = 30,xmax = 35)
您可以使用
cowplot
ggplot
制成的任何图中。我将R徽标用作需要添加到图中的图像(使用cowplot
的一个优点是,您可以轻松地指定图和图像的大小和位置。
library(cowplot)
library(magick)
img <- image_read("Logo.png")
# Set the canvas where you are going to draw the plot and the image
ggdraw() +
# Draw the plot in the canvas setting the x and y positions, which go from 0,0
# (lower left corner) to 1,1 (upper right corner) and set the width and height of
# the plot. It's advisable that x + width = 1 and y + height = 1, to avoid clipping
# the plot
draw_plot(p,x = 0, y = 0.15, width = 1, height = 0.85) +
# Draw image in the canvas using the same concept as for the plot. Might need to
# play with the x, y, width and height values to obtain the desired result
draw_image(img,x = 0.85, y = 0.02, width = 0.15, height = 0.15)
trone使用
grid.raster
,类似:
grid::grid.raster(img, x = 0.15, y = 0.05, width = unit(0.5, 'inches'))
y
定义图像的位置。 调整
unit()
中的数字以调整图。