Pre-processing the data

I am changing the data format for analyzing the network based on location of building in Kaist.

Building No / Time / lat / lon

Also, I am collecting new data from friends. As soon as I change the entire data, I will do network analysis.

*Link

https://postechackr-my.sharepoint.com/personal/juhpark_postech_ac_kr/_layouts/15/onedrive.aspx?originalPath=aHR0cHM6Ly9wb3N0ZWNoYWNrci1teS5zaGFyZXBvaW50LmNvbS86ZjovZy9wZXJzb25hbC9qdWhwYXJrX3Bvc3RlY2hfYWNfa3IvRW1jVUZLV0dzRkpMc3hXU21Kck1ydElCd3VzaXdxM1ZRdzBxb21pTy1EYzNLdz9ydGltZT1fZFVqcDZ0dDEwZw&id=%2Fpersonal%2Fjuhpark%5Fpostech%5Fac%5Fkr%2FDocuments%2FPDI%20Lab%2FChang%20Mi%2F1120