/DataVisualizer-in-QT

Primary LanguageC++

Large Data Visualizer

Yanjie Ze

Dec 20, 2021

1 Introduction

This is the repo for Course Project of CS2309: Principles and Practice of Problem Solving, taught by Prof. Jieru Zhao and Prof. Haiming Jin, mainly finished with QT, C++, HTML, Javascript.

In this project, we analyze the POI data provided and visualize it. Some demos are shown below.

Fig 1. three functions implemented

2 Usage

Here we will give instructions on how to run our project.

Preparation:

  1. Git clone this repo and open it with QT (5+).
  2. Download the data we use, provided in the release, named gowalla.csv.
  3. Complie and run our application.

Now you can see our GUI, and then:

  1. Click Select Your File and select the downloaded file.
  2. Click read.
  3. After the reading is finished, you can click several functions provided and try them!

3 Functions

We provide six functions:

  • Top 10 Popular POIs! Display the top 10 popular POIs visited by a specific user (or a set of users) over time.
  • Checking-ins of Selected POIs! Display the number of checking-ins of a specific POI (or POIs within a GPS range) over time.
  • Comparison of two Users! Display the difference of visited POIs between two users over time.
  • Comparison of two POIs! Display the daily active users (DAU) of two POIs.
  • Trajectory! Display the trajectory of a specific user on the map.
  • Heatmap! Display the heatmap of popular POIs, i.e., plot the thermal diagram in a period of time on the map.

Clear Canvas is used for clear the canvas.

4 Acknowledgement

If you get trouble using our code, please feel free to contact the author Yanjie Ze. Email: zeyanjie@sjtu.edu.cn