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Contour Line 본문

Programing/GIS &

Contour Line

basic 2020. 12. 23. 09:20

원본 글 : abelvm.github.io/sql/contour/

 

Fast contour lines using plain PostGIS

There’s a bunch of different ways to generate contour lines [1] from scatter data, each of them based on different interpolation algorithms. Like KNN [2], IDW [3] or kriging-flavoured methods [4]. (image from Wikipedia)

abelvm.github.io

Input Dataset

  • geomin: geometries array  -> 좌표 포인트
  • colin: numeric values array -> z, height 값
  • breaks: numeric breaks array -> 10, 20, 30 구간 값

 

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