getPixelDf.Rd
Extracts a data.frame in which each row corresponds to a pixel in the current image with x- and y-coordinates.
getPixelDf(object, xrange = NULL, yrange = NULL)
An object of class spata2
.
Vector of length two or NULL
. If not NULL
,
specifies the x- and y-range to which the output image is cropped. E.g.
xrange = c(200, 500)
results in the image being cropped from
x-coordinate 200px up to x-coordinate 500px. If NULL
, the original image
ranges are taken.
This argument works within the SPATA2
distance framework.
If values are specified in European units of length the input is
immediately converted to pixel units. See info section Distance measures
for more information.
Data.frame with nrow()
equal to the number of pixels.