Diamond Price Predictor

J. Hans
8-5-2020

The diamond app

This app uses the diamonds dataset in the ggplot2 library to help users predict diamonds prices. With the app the user can:

Select the cut, color, and clarity of a diamond
See a plot of the range of expected prices for different sized diamonds with the selected characteristics
See the min and max prices for diamonda with the selected characteristics

Here is the dataset used in the app

library(ggplot2)
library(dplyr)
data(diamonds)
nrow(diamonds)

[1] 53940

head(select(diamonds, price, carat, cut, color,clarity))

# A tibble: 6 x 5
  price carat cut       color clarity
  <int> <dbl> <ord>     <ord> <ord>  
1   326 0.23  Ideal     E     SI2    
2   326 0.21  Premium   E     SI1    
3   327 0.23  Good      E     VS1    
4   334 0.290 Premium   I     VS2    
5   335 0.31  Good      J     SI2    
6   336 0.24  Very Good J     VVS2

The app plots price ranges for diamonds with user-selected attributes

library(ggplot2)
data(diamonds)

ggplot(data = subdiamonds, aes(x = group, y = price)) + 
      labs(x = "carats (range)") + geom_boxplot() + 
      coord_cartesian(ylim = c(0, 20000))

plot of chunk unnamed-chunk-4

Where to find it

You can test out the Diamond App at:

https://j-hans-p.shinyapps.io/ShinyApp/?_ga=2.136712435.271409744.1596591061-80657251.1596591061