Indeed, you need to create a single file with the two variables
combined and use a "missing value code" (i.e. below the trimming limit)
at all locations where only one of the two variables have been measured.
Chief Scientist at BioMedware Inc.
Courtesy Associate Professor, University of Florida
President of PGeostat LLC
516 North State Street
Ann Arbor, MI 48104
Voice: (734) 913-1098 (ext. 8)
Fax: (734) 913-2201
From: Feng Liu [mailto:asherliu@...
Sent: Thu 4/6/2006 6:16 PM
To: 'AI Geostats mailing list'
Subject: [ai-geostats] cokriging by using GSLIB
I was trying to use cokriging to estimated soil N content while using NDVI as a secondary variable. I am confused of how GSLIB arrange the variables. Since I have more NDVI values than soil N values, Should I put both variables in one datafile ? If not, how to arrange that?
Thanks a lot