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Feat/eval-buffer-two-features #8

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34 changes: 24 additions & 10 deletions R/eval.R
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Original file line number Diff line number Diff line change
Expand Up @@ -135,8 +135,8 @@ eval_buffer <-
direction,
coords = NULL) {

if (missing(x) || is.null(x) || !inherits(x, 'SpatRaster')) {
stop('x must be provided. expected type is SpatRaster.')
if (missing(x) || is.null(x)) {# || !inherits(x, 'SpatRaster')) {
stop('x must be provided.')# expected type is SpatRaster.')
}
if (missing(y) || is.null(y)) {
stop('y must be provided.')
Expand Down Expand Up @@ -184,14 +184,28 @@ eval_buffer <-
# }
# how to summarize buffers with ordinal/categorical

terra::extract(
x = x,
y = st_buffer(y, dist = buffer_size),
layer = layer,
na.rm = FALSE,
fun = buffer_fun,
ID = FALSE
)[[layer]]
if (inherits(x, "SpatRaster")) {
terra::extract(
x = x,
y = st_buffer(y, dist = buffer_size),
layer = layer,
na.rm = FALSE,
fun = buffer_fun,
ID = FALSE
)[[layer]]
} else if (inherits(x, "sf")) {
# TODO: intersect buffered points with unioned x and return area / buffer area
x_unioned <- st_union(x)
y_buffered <- st_buffer(y, buffer_size)
xy_intersection <- st_intersection(y_buffered, x_unioned)

y_buffered_area <- st_area(y_buffered)
# out <- rep(NA, length(y_buffered_area))
# out[xy_intersection]

# xy_intersects <- st_intersects(y_buffered, x_unioned)
}

}


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