کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1064548 | 1485795 | 2013 | 11 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Spacebender Spacebender](/preview/png/1064548.png)
This paper presents an algorithm that deforms geographical space such that local spatial variation is more regular in the transformed space than in the original space. Geographical-space deformation may be useful in situations where there is an indication that the assumption of stationarity of the variance is unrealistic. In this paper we present an algorithm, Spacebender, a variance equalising algorithm that can be used for generating the non-affine transform between geographic space and the transformed space. This transformed space, which takes care of the non-stationary spatial covariance structure in the geographic space, is the one in which regularly spaced points would be optimal for sampling. This transformed space is a kind of enviro-geographic space as opposed to a simple geographic one. Two examples are given; one is based on a digital elevation model, and the other used a data from a soil gamma radiometric potassium survey.
Journal: Spatial Statistics - Volume 4, May 2013, Pages 57–67