Translate between WKB and WKT
wkb_translate_wkt(
wkb,
include_z = NA,
include_m = NA,
include_srid = NA,
precision = 16,
trim = TRUE
)wkb_translate_wkb(
wkb,
include_z = NA,
include_m = NA,
include_srid = NA,
endian = wk_platform_endian(),
buffer_size = 2048
)
wkb_translate_wksxp(wkb, include_z = NA, include_m = NA, include_srid = NA)
wkt_translate_wkt(
wkt,
include_z = NA,
include_m = NA,
include_srid = NA,
precision = 16,
trim = TRUE
)
wkt_translate_wkb(
wkt,
include_z = NA,
include_m = NA,
include_srid = NA,
endian = wk_platform_endian(),
buffer_size = 2048
)
wkt_translate_wksxp(wkt, include_z = NA, include_m = NA, include_srid = NA)
wksxp_translate_wkt(
wksxp,
include_z = NA,
include_m = NA,
include_srid = NA,
precision = 16,
trim = TRUE
)
wksxp_translate_wkb(
wksxp,
include_z = NA,
include_m = NA,
include_srid = NA,
endian = wk_platform_endian(),
buffer_size = 2048
)
wksxp_translate_wksxp(wksxp, include_z = NA, include_m = NA, include_srid = NA)
wk_platform_endian()
A list()
of raw()
vectors, such as that
returned by sf::st_as_binary()
.
Include the
values of the Z and M coordinates and/or SRID
in the output? Use FALSE
to omit, TRUE
to include, or NA
to include
only if present. Note that using TRUE
may result in an error if there
is no value present in the original.
The rounding precision to use when writing (number of decimal places).
Trim unnecessary zeroes in the output?
For WKB writing, 0 for big endian, 1 for little endian.
Defaults to wk_platform_endian()
(slightly faster).
For WKB writing, the initial buffer size to use for each feature, in bytes. This will be extended when needed, but if you are calling this repeatedly with huge geometries, setting this value to a larger number may result in less copying.
A character vector containing well-known text.
A list()
of classed objects
*_translate_wkt()
returns a character vector of
well-known text; *_translate_wkb()
returns a list
of raw vectors, and *_translate_wksxp()
returns an unclassed
list of wksxp()
geometries. Unlike as_wkb()
, as_wkt()
, and
as_wksxp()
, these functions do not attach
a class to the output.
# NOT RUN {
# translate between WKT and WKB
(wkb <- wkt_translate_wkb("POINT (30 10)"))
wkb_translate_wkt(wkb)
# some basic creation options are also available
wkt_translate_wkt("POINT (30 10)", trim = FALSE)
wkb_translate_wkb(wkb, endian = 0)
# }
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