ggplot for multiple values in the same row - r

Question

I have a data frame with multiple values in the same row
index price
1 1000,2000,3000
2 2000,500
The data frame has 12 rows and not all price rows have equal length. I want to plot index vs price with index along x-axis and price along y-axis. I have the following code-
ggplot(data_m,
aes(x = 1:12,
y = data_m$price))
I get the error- Error: Aesthetics must be either length 1 or the same as the data (12): y
How do I plot every value in the price column?

Answer 1

Maybe you are looking for this. You have to reshape data and then look for the strategy to plot as mentioned by #TheSciGuy. Here a tidyverse approach using separate_rows() to split values in your rows and then a full_join() to compact with the index you wish. Next the code:
library(tidyverse)
#Data and plot
df %>% separate_rows(price,sep=',') %>%
mutate(price=as.numeric(price)) %>%
full_join(data.frame(index=1:12)) %>%
ggplot(aes(x=factor(index),y=price))+
geom_point()+
xlab('index')
Output:
Some data used:
#Data
df <- structure(list(index = 1:2, price = c("1000,2000,3000", "2000,500"
)), class = "data.frame", row.names = c(NA, -2L))
And if you want some color per index:
#Data and plot 2
df %>% separate_rows(price,sep=',') %>%
mutate(price=as.numeric(price)) %>%
full_join(data.frame(index=1:12)) %>%
ggplot(aes(x=factor(index),y=price,color=factor(index)))+
geom_point()+
xlab('index')+
theme(legend.position = 'none')
Output: