bilinearGrad | R Documentation |
Gradient for bilinear interpolation
bilinearGrad(loc, cov_list)
loc |
Point at which the gradient should be evaluated (2d vector) |
cov_list |
List of J (number of covariates) "raster like" elements. A raster like element is a 3 elements list with named elements 1) "x" a vector of increasing x locations (at which the covariate is sampled) 2) "y" a vector of increasing y locations (at which the covariate is sampled) 3) "z" a size(x)*size(y) matrix giving covariate values at location (x, y) |
Gradient of all covariates at the given location
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