Re: [R-sig-Geo] multiple regression analysis

2010-11-09 Thread Peter Kirchner
Hi Matevž, If I understand you correctly and your goal is to conduct a spatial analysis of the variables of parent material, and particle size e.g. clay, based on depth you will first need to make some decisions on how to classify your data based on depth. Then you could create a 2d raster

Re: [R-sig-Geo] multiple regression analysis

2010-11-09 Thread Dylan Beaudette
Hi, Or, you could include additional variables into the model structure that describe vertical patterns. If you choose to do this, then it would also be wise to account for correlation between observations with depth and in space. Assuming that you can describe your response variable with some