qc_fix_latlong_errors makes possible to fix known errors in latitude and
longitude coordinates, as exchanged signs.
Data frame with data coming from
Folder route where the maps are stored, by default the
working directory. It must be a character object and it must end
Logical indicating if sign errors must be checked and
fixed. If TRUE (default),
Logical indicating if the special approach to countries having positive and negative coordinates must be used. See Special countries section for details.
This function calls to other internal functions in order to fix different kinds of coordinates errors. At the moment, only exchanged signs in coordinates errors are considered to be fixed.
After the fixes are applied,
qc_check_coordinates is called to
Same data frame provided, with coordinates tested and fixed
sign_errors = TRUE is specified,
called to establish possible sign error and, if any, they are fixed. This fix
can be done with or without special countries (see next section)
There are special countries where border coordinates for longitude, latitude
or both have negative and positive values. In this case, the normal approach
qc_coord_sign_test is not appropriate, and several tests involving
the internal use of
qc_check_coordinates must be made. If
special_countries = TRUE is specified, then tests are made trying to
dilucidate if only a change in the sign of one, latitude or longitude, is
needed or, in the contrary, changing both of them is needed. There is one
case that can not be covered by this approach: when changing sign of one of
the coordinates AND changing both coordinates seem to fix the issue,
as the correct option can not be assured.
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