Control Points in Spatial Interpolation of GIS Data: Also Called Known Points, Sample Points, or Observations (Especially for GATE-Geospatial 2022)

Get top class preparation for IMO-Level-2 right from your home: get questions, notes, tests, video lectures and more- for all subjects of IMO-Level-2.

Examrace Books on Mapping, GIS, and Remote Sensing prepares you throughly for a wide range of practical applications.

Control points provide the data necessary for the development of an interpolator for spatial interpolation. The number and distribution of control points can greatly influence the accuracy of spatial interpolation.

It also called known points, sample points, or observations, control points provide the data necessary for the development of interpolator for spatial interpolation. This method is designed to capture the general trend of the surface.

The number and distribution of control points can greatly influence the accuracy of spatial interpolation.

Image Shows Map of 175 Weather Stations in and Around Idaho

Figure shows 130 weather stations in Idaho and 45 additional stations from the surrounding states. The map clearly shows data-poor areas in Clearwater Mountains, Salmon River Mountains, Lemhi Range, and Owyhee Mountains. These 175 stations, and their 30-year average annual precipitation data, are used as sample data throughout.

Developed by: