I'm working on a report in R markdown. I know there is a way to have different plots side by side, and there is also a way to have different images side by side.
But is it also possible to show a plot and an image side by side?
I have a ggplot bar graph that I would like to present next to an image of a map, it takes up too much space if I put the image below the graph.
Thanks, Regards, Freya
This could work to you. Here is the step by step, with an indication of the code between parentheses.
First, you need to load the image (y), by creating an object (photo).
Second, you create a ggplot with the image (photo_panel).
Finally, after creating your plot (p1), you use the library cowplot to plot a grid (plot_grid).
.Rmd file:
---
title: "Image + graph"
author: bttomio
output: pdf_document
---
```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE)
```
## R Markdown
```{r image_graph}
y = "http://upload.wikimedia.org/wikipedia/commons/5/5d/AaronEckhart10TIFF.jpg"
download.file(y,'y.jpg', mode = 'wb')
library("jpeg")
photo <- readJPEG("y.jpg",native=TRUE)
library(ggplot2)
library(cowplot)
photo_panel <- ggdraw() + draw_image(photo, scale = 0.8)
df <- data.frame(Years=rep(2016:2017, each=4),
Quarters=rep(paste0("Q", 1:4), 2),
Series1=seq(100, 800, 100))
library(ggplot2)
p1 <- ggplot(df) +
geom_point(aes(x=Quarters, y=Series1)) +
facet_wrap( ~ Years, strip.position="bottom", scales="free_x") +
theme(panel.spacing=unit(0, "lines"),
strip.background=element_blank(),
strip.placement="outside",
aspect.ratio=1) # set aspect ratio
plot_grid(p1, photo_panel, ncol = 2)
```
Output:
