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NTIS 바로가기한국지리정보학회지 = Journal of the Korean Association of Geographic Information Studies, v.23 no.2, 2020년, pp.1 - 20
문한솔 (창원대학교 환경공학과) , 송봉근 (창원대학교 산업기술연구원) , 서경호 (경상남도교육청) , 김태형 (창원대학교 토목환경화공융합공학부) , 박경훈 (창원대학교 토목환경화공융합공학부)
The purpose of this study was to analyze the distribution characteristics of spatial and temporal PM2.5 in urban areas of Changwon-si, and to identify the causes of PM2.5 by comparing the characteristics of land-use, and to suggest the direction of reduction measures. As the basic data, the every ho...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
Spline이란 무엇인가? | 하지만 IDW와는 다르게 단순거리에 관한 함수를 이용하지 않고 측정된 값들 간의 공간적 구조와 공간상관에 근거하는 방법이다(Kim and Jo, 2012). Spline는 관측된 지점의 값을 통과하는 표면 곡률의 총합이 최소가 되게 표면을 형성하여 미관측지점의 값을 예측하는 기법이다(Kim et al., 2014). | |
Kriging이 IDW와 구별되는 특징은 무엇인가? | Kriging은 측정값들간의 자기상관을 포함하는 통계적 모델에 근거하고, IDW와 같이 보간하고자 하는 점 주위의 측정값에 가중치를 부여하여 예측한다. 하지만 IDW와는 다르게 단순거리에 관한 함수를 이용하지 않고 측정된 값들 간의 공간적 구조와 공간상관에 근거하는 방법이다(Kim and Jo, 2012). Spline는 관측된 지점의 값을 통과하는 표면 곡률의 총합이 최소가 되게 표면을 형성하여 미관측지점의 값을 예측하는 기법이다(Kim et al. | |
대표적인 공간내삽법에는 어떤 방법들이 있는가? | 5 농도의 시·공간적인 분포 특성을 분석하였다. 공간내삽법은 가지고 있는 특정 지점의 관측값을 이용하여 미관측지점의 값을 예측하는 기법이며, 대표적인 방법으로 IDW, Kriging, Spline이 있다. IDW는 공간적으로 인접한 지점 사이의 값은 공통된 위치요인으로 인하여 유사성을 가지고, 두 지점간의 거리가 증가할수록 유사성이 상대적으로 감소하게 된다는 가정에 기초한다(Cho and Jeong, 2006; Lee et al. |
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