ufukty / reddit-galaxy

Visualization of the links between subreddits

reddit-galaxy

Full resolution 7920x6100px

• Edges (links of the network) are representing all of the hyperlinks which posted in a subreddit and points to another subreddit.

• Orange end of each link represents the source subreddit, and blue end represents the target.

• Orangish subreddits have lots of outgoing hyperlinks. Blueish subreddits have lots of incoming hyperlinks. Albescent subs has both incoming and outgoing hyperlinks in large amount.

• Links are weighted and weights are the number of total post between two subs. Weights are represented by opacity in the image. Minimum opacity is 0.02

• There are 54.075 subreddits and 571.927 posts/hyperlinks in dataset and 234.792 weighted links were drawn.

• Locations are randomly assigned and only the top 600 most-linked and top 400 most-linker subs are labeled.

• I needed to increase the visibility of blue edges because they are more distributed than orange ends and was suppressed by orange areas.

Step-by-step guide

Requirements

• Apache Spark 3.0.1
• Hadoop 2.7.7
• matplotlib
• networkx

Download

Code

Download the code from Code ↓ button above or run this command:

git clone https://github.com/ufukty/reddit-galaxy.git

Dataset

Download soc-redditHyperlinks-title.tsv file and place it in the root of this project

https://snap.stanford.edu/data/soc-RedditHyperlinks.html

Run

Open Terminal and run those commands:

Load data into Hadoop

hadoop fs -mkdir hadoop_dataset
hadoop fs -put *.tsv hadoop_dataset

Open spark-shell

spark-shell
scala> :load 1.scala

Run the python code

python 2.py

output folder should be created.

License

GNU General Public License v3.0
Read the LICENSE file for details