create plot in ggplot for each unique value in a row in r

Question

I have a dataframe like this:

library(tidyverse)

my_data <- tibble(name = c("Justin", "Janet", "Marisa"),
                  x = c(100, 50, 75),
                  y = c(2, 3, 6))

Each name is unique, and I want to make a bar graph for each person without having to do it line by line. I also want to save each plot as a unique object because I'll be inputting it into a power point using the officer package. Last, the names won't always be the same, but each name will always be unique.

For instance, I want one plot for Janet, one plot for Justin, and one plot for Marisa. I don't want them faceted but instead as their own objects.

Any thoughts?

Ronak Shah · Accepted Answer · 2020-08-28 02:37:14Z

1

We can get the data in long format first and for each individual name create the plot.

library(tidyverse)
long_data <- my_data %>% tidyr::pivot_longer(cols = -name, names_to = 'col')

plots_list <- map(unique(my_data$name), ~long_data %>%
                   filter(name == .x) %>%
                   ggplot() + aes(name, value, fill = col) + 
                   geom_bar(stat = 'identity', position = 'dodge') + 
                   scale_fill_manual(values = c('red', 'blue')) + 
                   ggtitle(paste0('Plot for ', .x)))

This will return list of plots where individual plots can be accessed via plots_list[[1]], plots_list[[2]] etc.

plots_list[[1]]

edited Aug 28, 2020 at 2:37

answered Aug 28, 2020 at 2:27

Ronak Shah

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3 Comments

J.Sabree Over a year ago

sorry I should have been clearer--I want 3 plots. One for Janet, one for just, one for marisa

Ronak Shah Over a year ago

So same individual bar graphs for each? Or do you want to have facets?

J.Sabree Over a year ago

not facets--the same bar graph for each individual, ideally each as their own object

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