This paper evaluated the geographical distribution, chronological and economic patterns of the commercial cinema industry in Seoul, Korea dichotomized by the two main types of cinemas that have been prevalent in the recent Korean history, the first-run cinemas and the double-feature cinemas. This analysis involved computational technologies including the R statistical programing language and the interactive map library known as Leaflet for R in order to scrutinize the aforementioned patterns. Historically the cinema industry has been under the tight control of authoritarian military dictatorships that have run Korea in past decades, and the measures they took to control the cinema industry leading to unexpected ramifications. One of them is the decrease in the quality of domestic films, as competition with international films was reduced, and another is the massive increase in the domestic production of low-quality sex-exploitation B-tier films. The double feature cinemas played a big role in the distribution of the low- quality films. Our electronic maps will clearly represent the hierarchy and differentiation of these cinemas in the cinematic landscape of Seoul.