This function is used to isolate other oce functions from
changes to the rgdal::project() function in the rgdal
package, which is used for calculations involved in both forward
and inverse map projections.
oceProject(
xy,
proj,
inv = FALSE,
use_ob_tran = FALSE,
legacy = TRUE,
passNA = FALSE
)As for the rgdal::project() function in the
rgdal package.
Logical value indicating whether to pass NA values into
rgdal. The default is FALSE, meaning that any NA
values are first converted to 0 before the calculation, and then
converted to NA afterwards. Setting this to TRUE produces
errors on the i386/windows platform, but it seems likely that a version
of rgdal released after 1.3-9 may not have that error.
A two-column matrix, with first column holding either
longitude or x, and second column holding either
latitude or y.
Some highlights of the evolving relationship with rgdal are:
See https://github.com/dankelley/oce/issues/653#issuecomment-107040093
for the reason why oce switched from using rgdal::rawTransform(),
to rgdal::project(), both functions provided by the
rgdal package.
2016 Apr: rgdal::project started returning named quantities
2019 Feb: allowNAs_if_not_legacy was added in rgdal 1.3-9 to prevent
an error on i386/windows. However, using this argument imposes a
burden on users to update rgdal, so the approach taken
here (by default, i.e. with passNA=FALSE) is to
temporarily switch NA data to 0, and then switch
back to NA after the calculation.