Building a Geocoding Web Service
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In the previous installment of this four-part series regarding creating spatially enabled Web applications, you learned how to create a local datasource mapping mailing addresses to latitudinal and longitudinal coordinates using the Geo::Coder::US Perl package and the U.S Census Bureau's TIGER/Line data. In this final installment, you'll learn how to make this data available to the world through a Perl-based Web service. To demonstrate the service's capabilities, a PHP-driven client will pass a mailing address to the Web service, retrieve the spatial data made available through this Web service, and finally feed it to the Google Maps API to produce a map marking the location of the mailing address.
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