draw.gradient {RGeostats}  R Documentation 
Internal function for representing the gradient components
draw.gradient(x, y, gx, gy, col="black", grad.size = 1., opt.grad=1, flag.grad=TRUE, flag.grad.pt=TRUE, ...)
x 
Array giving the coordinates of the samples along X 
y 
Array giving the coordinates of the samples along Y 
gx 
Array giving the gradient components of the samples along X 
gy 
Array giving the gradient components of the samples along Y 
col 
Color assigned to the Gradient representation 
grad.size 
Scale factor to convert a gradient unit into a field unit. 
opt.grad 
Type of representation (only for gradients):

flag.grad 
When TRUE, the information (gx,gy) define the gradients When FALSE, the information (gx,gy) define the tangents 
flag.grad.pt 
Whne TRUE, the location of the information is represented. 
... 
Other parameters passed to function 
When all dimensions of the gradient are zero, the sample is represented using the characteristics provided by the user, but with a pattern representation fixed to pch=10.