geo_world0 {affinity}

World file parameter creator

Description

Basic function to create a 'world file' as used by various non-geo image formats

Reformat to world vector.

Usage

geo_world0(px, ul, sh = c(0, 0))

geotransform_to_world(x)

Arguments

px

pixel resolution (XY, Y-negative)

ul

grid offset, top-left corner

sh

affine shear (XY)

x

geotransform parameters, as per geo_transform0()

Details

Note that xmin/xmax are centre_of_cell (of top-left cell) unlike the geotransform which is top-left corner_of_cell. The parameters are otherwise the same, but in a different order.

Value

vector of parameters xres, yskew, xskew, yres, xmin, ymax

world vector, as per geo_world0()

See Also

geo_transform0

Examples

geo_world0(px = c(1, -1), ul = c(0, 0))
(gt <- geo_transform0(px = c(1, -1), ul = c(0, 0)))
wf <- geotransform_to_world(gt)
world_to_geotransform(wf)