Sampling

Knowing how to perform spatial sampling is a critical skill for GIS analysts. Click on the links below for info on how to perform spatial sampling using ArcGIS and R.

1. Sampling Design Tool (ArcGIS 10.0)

2.Spatial Sampling with R module, sp

3. Using R for spatial sampling of raster layers 

4. Sample point locations within a spatial region

5. GRTS Spatial Sampling

6. The spsurvey package is great for spatial sampling.  It can sample points, lines, or polygons using either simple random sampling, unequal probability sampling, stratification. Main focus is on spatially balanced sampling. Spsurvey uses ESRI shapefiles as main input but when it reads them in it creates an sp object. The resulting sample is also an sp object.