GEOSTATS: Geostatistics in polar coordinates?
- Hello the GEOSTAT list,
We have an application for which polar coordinates may better
represent some of the relationships in space. For a center pivot
irrigation machine, most factors external to the pivot (soils,
insects, weather) will be well described by cartesian coordinates.
However, factors internal to the pivot system (variance in
sprinklers, failed valves, etc) will be related either along the
radius or around the arc. A stuck valve, for instance, would
describe a circle in its effect on the crop. An altered speed
setting would cause a pie-shaped wedge to show up in the crop.
Has anyone worked in polar coordinates, or, better, the sum of a
polar and a cartesian system?
Analyses of spatial variance under conventional and site-specific
pivots would be facilitated if this were possible.
I would appreciate any thoughts you may have regarding this.
E. John Sadler, Ph.D.
Coastal Plains Soil, Water,
and Plant Research Center 803-669-5203x112 (voice)
2611 West Lucas St. 803-669-6970 (fax)
Florence, SC 29501-1241
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