Mathematics in Education, Research and Applications (MERAA), 2017(3), 1
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Published online 2017-12-04
DOI:http://dx.doi.org/10.15414/meraa.2017.03.01.11-16
B-spline surface for distribution of the agriculture soil moisture
Dušan Páleš, Jozef Rédl, Ivan Beloev
Slovak university of Agriculture in Nitra, Nitra, Slovak Republic
Article Fulltext (PDF), pp. 11–16
- In the agricultural locality Pohranice were measured soil moisture values for the selected control points. Over these points we put the B-spline surface, which relatively
detailed description we supply. On a simple example of 4 x 4 points we debugged program for generation of base functions. Furthermore, we verified
process to generate knots of B-spline surface, which we subsequently used for the programming of the surface itself. In this manner formed algorithms
we applied to 11 x 11 measured values of soil moisture. Discrete values of measurements were by clamped B-spline surface smoothed and its corner
values constitute the edge measurement points. Evenly spaced points at a distance of 1 m in both directions slightly simplified the procedure, which
can deal with irregular layout of points.
- Keywords: basis functions, B-spline knots, surface fitting
- JEL Classification: M55, N55