Scale a bounding box
Takes a bounding box as an input and outputs a bounding box of a different size, centred at the same point.
bbox_scale(bb, scale_factor)
bb |
the bounding box or spatial object that will be used to crop |
scale_factor |
Numeric vector determining how much the bounding box will grow or shrink. Two numbers refer to extending the bounding box in x and y dimensions, respectively. If the value is 1, the output size will be the same as the input. |
Other geo:
gclip(),
geo_bb_matrix(),
geo_bb(),
mapshape_available(),
mapshape(),
quadrant(),
reproject()
bb <- matrix(c(-1.55, 53.80, -1.50, 53.83), nrow = 2) bb1 <- bbox_scale(bb, scale_factor = 1.05) bb2 <- bbox_scale(bb, scale_factor = c(2, 1.05)) bb3 <- bbox_scale(bb, 0.1) plot(x = bb2[1, ], y = bb2[2, ]) points(bb1[1, ], bb1[2, ]) points(bb3[1, ], bb3[2, ]) points(bb[1, ], bb[2, ], col = "red")
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.