Hello list I am stuck with a problem regarding the manipulation of two data sets.
The first data set contains electromagnetic induction (EMI) readings of a field obtained with a high sampling density,14965 records in a field 1000 by 500 m. Each reading is geo-referenced. The second set contains soil related information (texture) taken from soil pits of the same field at a density of 75 x 75 m resulting in 111 readings. The position of each pit is geo-referenced as well. I would like to calculate an average of the EMI readings in the vicinity of the soil pits, say within a radius of 2 - 5 metres and relate this average to the soil texture data obtained from the pits. Averaging would also reduce the size of the EMI data set which at the moment is too big for ordinary kriging in GSTAT. Can this be done with a few lines of code? Regards _________________________________ Karl J Sommer, Department of Primary Industries, Catchment & Agriculture Services, PO Box 905 Mildura, VIC, Australia 3502 Tel: +61 (0)3 5051 4390 Fax +61 (0)3 5051 4534 Email: [EMAIL PROTECTED] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo