ggplot with custom legend

[Dan_D]

I would like to add a legend to a ggplot2. The dataframe has many categorical variables that are easily transformable into numbers (they are on a Likert scale). I am trying to display the data with a stat_count().

ggplot(results,aes(as.numeric(results[,x]), fill =results[,x]))+
stat_count(aes(y = stat(count) / sum(count)), show.legend = TRUE)+
geom_text(aes(label = round(stat(count) / sum(count),3), y= stat(count) / sum(count)), stat= "count", vjust = -.25) +
xlim(c(0,5)) +
geom_vline(xintercept = mx, colour = "red", lwd = 2, lty=3) +
labs(title = title) +
xlab(paste0("Your average for this question is: ", mx))+
ylab("")

The ylim needs to be from 0.0 to 1.0.
This is a screenshot of what I would like to achieve, but instead of col I would like to put Legend, I need a color for each number 1 2 3 4 5 although 3, 4 and 5 do not appear. And they to be ordered one under another.

[lars]

Hi Dan,

In order to help you better, it would help us a lot of you can provide a minimal reproducible example.

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[nirgrahamuk]

library(tidyverse)
results <- factor(x=c(rep("1",6),rep("2",3)),
                     levels = as.character(0:5)) %>% 
                enframe(value="xaxis",
                         name="entry")
mx <-1.5

title <- "some title"

ggplot(results,aes(x=xaxis, fill =xaxis))+
  stat_count(aes(y = stat(count) / sum(count)), show.legend = TRUE) +
  scale_fill_discrete(drop=FALSE,name="title I want") + 
  scale_x_discrete(drop=FALSE) +
  geom_text(aes(label = round(stat(count) / sum(count),3),
                y= stat(count) / sum(count)), stat= "count", vjust = -.25) +
  ylim(c(0,1))+
  geom_vline(xintercept = mx, colour = "red", lwd = 2, lty=3) +
  labs(title = title) +
  xlab(paste0("Your average for this question is: ", mx))+
  ylab("")

[Dan_D]

Awesome, thank you, I will check this solution to see if it works with my dataset, so I will dig into it and come back with the final result.

[Dan_D]

Super, did work like a charm. I have an extra question, what if I wanted to define the colors on my own? Would

scale_fill_manual

do the trick?

[nirgrahamuk]

yes indeed, scale_fill_manual