illustration by Chaeyun Kim

Recording video with internal audio is one of the most important features missing in macOS. This short article will guide you on how to do it in an easy way. You can follow this guide and be ready for video record with internal/system audio in 5 minutes!

Step one: Install the Background Music plugin

3D Building Model of Stuttgart — Loading I3S Scene Layers Service in Unity3D (by Author)

In the recent Geo Data Science projects, the 3D geovisualization tool plays an important role in several application domains such as urban planning, indoor/outdoor pedestrian navigation, environmental simulations, cultural heritage, or facility management [1] In recent years, ESRI has developed I3S or indexed 3D scene layer which is the delivery…

Host WordPress for Free With Google Cloud (Image by Author — Courtesy of Chaeyun Kim)

Most websites on the internet are built using WordPress. It is one of the best CMS. As a beginner, you may try learning with to create a website and host with WordPress. However, the free site from always comes with annoying advertisements somewhere on your web. Of course…

Photo by Wesson Wang on Unsplash

Rename multiple files would cause a lot of pain to many people. Lucky for macOS users, that the batch renaming capabilities are integrated into Mac’s Finder. This article shows a short tutorial on how to do it which you can follow instantly.

Step 1: Select All Target Files to Rename.

Just open the Finder and browse to the…

Generate 3D Building Models With Textures By CityEngine. (by Author)

Why 3D Building Models? 🏨

Nowadays, the 3D texture building model plays a big role in a variety of application domains such as game development, urban planning, Smart Cities, indoor/outdoor pedestrian navigation, environmental simulations, real estate, cultural heritage, facility management, and much more. …


Photo by Caspar Camille Rubin on Unsplash

This article is a very short tutorial for installing PostgreSQL 12/ PostGIS on the Ubuntu system. It is a production note which I initially wrote for myself to install PostgreSQL on several machines. The explanation is kept very short and straight to the result.

Step 1: Add and Install the PostgreSQL 12 via your terminal.

$ sudo apt update
$ sudo apt…

CesiumJS Tutorial

3D City Model — New York City, USA with Mapbox Day Navigation based-map

CesiumJS is an open-source JavaScript library for creating world-class 3D globes and maps with the best possible performance, precision, visual quality, and ease of use. If you are new to Cesium, please check the basic tutorial of Cesium from

This short article shows step-by-step on how to add Mapbox…

Joe T. Santhanavanich

Ph.D. Candidate in GeoSciences TU Dresden. LinkedIn:

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