Analysis of Urban Growth in Purwakarta Regency 2019–2023 Using Wind Direction Quadrant Method
DOI:
https://doi.org/10.63639/xmqgh034Keywords:
Developing Regions, Random Forest, Sentinel-2, Urban GrowthAbstract
Purwakarta Regency holds a strategic geographical position that plays a vital role in urban dynamics, driven by population growth and infrastructure demand. The region is located at the intersection of three major transportation corridors connecting Jakarta, Bandung, and Cirebon, which makes it an attractive area for urban expansion. The objective of this study is to analyze the direction and extent of urban growth in Purwakarta Regency between 2019 and 2023 using remote sensing and spatial analysis approaches. Sentinel-2 imagery was employed as the main dataset to classify urban and non-urban areas with the Random Forest algorithm applied to ensure accurate land cover classification. Accuracy assessment was conducted using confusion matrix analysis, producing an overall accuracy of 0.92 in 2019 and 0.90 in 2023, while validation with Google Earth imagery yielded 92% accuracy in 2019 and 90% in 2023. The classified results were further examined using the quadrant method of wind directions to identify the spatial orientation of urban expansion. Both visual interpretation and quantitative analysis indicate that urban growth in Purwakarta Regency was predominantly concentrated in the southwest quadrant. The total change in urban area during the study period was measured at approximately 7.72 hectares. The findings highlight that urban development in Purwakarta is closely linked to strategic transportation networks and regional accessibility. This study concludes that the integration of Sentinel-2 imagery and spatial quadrant analysis provides a reliable approach to monitoring urban growth patterns in rapidly developing regions
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