NAME

wdb2merc - Convert Textual WDB datasets to binary Mercator Projected files

SYNOPSIS

wdb2merc.pl <WDB-path> <output-path>
wdb2merc.pl -h|-help

DESCRIPTION

Reads the latitude/longitude coordinate values from textual WDB dataset files I(available at> http://www.evl.uic.edu/pape/data/WDB/) and converts them to Mercator projected distance values (in meters), writing the the values out in a packed binary format that is faster to load, and compresses the data approx. 35%.

The datasets are also scrubbed of some bad data (I checked my globe several times, but couldn't find longitude -544 degrees...).

The resulting binary files are used by GD::Map::Mercator to render map images.

To install GD::Map::Mercator, copy and paste the appropriate command in to your terminal.

cpanm

cpanm GD::Map::Mercator

CPAN shell

perl -MCPAN -e shell
install GD::Map::Mercator

For more information on module installation, please visit the detailed CPAN module installation guide.

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