Diamond Analysis

This repository is the home of a diamond analysis shiny app which helps people to understand the pricing of diamonds.

Use this app with precaution and the author takes no responsiility of the actions taken.

Data

The data are extracted from the web pages of James Allen, however, the author is not affiliated with the company.

The script scraper.py scraps the price from the website and save the result in the data directory.

The app

There are three sections to web app.

• Price Derivatives
• Find a Bargain
• Predictive Analysis

Price Derivatives

This page the user to selecte a diamond with specific quality its expected price, further, the price given a change to each of the 4C quality are also provided.

Find a Bargain

In this page, the user can find the optimal diamond on James Allen based on a given set of minimum criteria.

Predictive Analysis

The predicted value and the retail price are illustrated in this component. This shows the power and the flaws of the model.

Analysis

The data processing, exploratory analysis and the models can all be found under the analysis directory.

Deployment

To launch the app, simply issue the follow command:

shiny::runApp()

Alternatively, one can deploy the app on shinyapps.

rsconnect::deployApp(appFiles = c("data/", "app.R", "helper.R"))

Please ensure that rsconnect has been set up correctly, the instruction can be found here.