Read a file that contains topographic data in the ETOPO dataset, as was once provided by
the NOAA website (see
download.topo() for a good server for such
files. (As of May, 2020, there does not seem to be a way to download these
Name of a file containing an ETOPO-format dataset. Three types are permitted; see “Details”.
an integer specifying whether debugging information is
to be printed during the processing. This is a general parameter that
is used by many
The three permitted file types are as follows.
An ascii type in which line 1 holds a label (which is ignored), whitespace, and then the number of columns in the matrix (i.e. the number of longitude values), line 2 is similar but for latitude, line 3 is similar but for the westernmost longitude, line 4 is similar but for southernmost latitude, line 5 is similar but for cell size, and lines after that hold the grid.
A NetCDF format that was once described by NOAA as "GMT NetCDF".
A NetCDF format that was once described by NOAA as "NetCDF".
A topo object that.
1 2 3 4 5 6
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