Exploring Spatial Information
and Analysis in Agriculture

Advanced Spatial Analysis Issues

Exercise 9 – Data Clustering

…pending

Base Maps. The Base Maps needed include:

P_Fall_1997 Map. Interpolated phosphorous surface for 1997 field data collected every 250 feet in a regular grid pattern.

K_Fall_1997 Map. Interpolated potassium surface for 1997 field data collected every 250 feet in a regular grid pattern.

NO3_N_Fall_1997 Map. Interpolated ammonium nitrogen surface for 1997 field data collected every 250 feet in a regular grid pattern.

Step 1. …press Grid Analysis button; press Statistics class button; select the Cluster operation.

CLUSTER P_Fall_1997 WITH K_Fall_1997, NO3_N_Fall_1997 USING 3 FOR Data_zones3.

Data_Zones3 Map. This map identifies three zones whose P, K and N values are fairly similar, yet different from those of the other two zones.