使用Perl和Google Maps API进行反向地理编码 [英] Reverse Geocoding using Perl and Google Maps API

问题描述

存在一个Perl模块以便与Google Maps API进行交互。代码如下：

 使用Geo :: Coder :: Google; 
 $ geocoder = Geo :: Coder :: Google-> new（）; 
 @location = $ geocoder-> geocode（location =>'1600 Pennsylvania Ave. Washington DC USA'）; 
  

网站资料来源： http://search.cpan.org/~arcanez/Geo-Coder-Google-0.11/lib/Geo /Coder/Google/V2.pm

然而，我需要从坐标转到寻址。即使这意味着在PERL中使用不同的方法，那么这又如何呢？请注意，我尝试了OpenMaps API，但它不准确。 Google地图似乎好多了。

解决方案

答案：

1. 下载CPAN Geo :: Coder :: Google 对象。


2. 浏览至V3。 pm对象。
   
3. 将此模块放入代码中。

sub reverseGeocode {my $ self = shift;

  my％param; 
 if（@_％2 == 0）{
％param = @_; 
} else {
 $ param {location} = shift; 
 
 
 
 $ b my $ location = $ param {location} 
或Carp :: croak（用法：reverseGeocode（location => \\ \\ $位置））; 
 
 if（Encode :: is_utf8（$ location））{
 $ location = Encode :: encode_utf8（$ location）; 
} 
 
 my $ uri = URI-> new（http：// $ self-> {host} / maps / api / geocode / json）; 
 my％query_parameters =（latlng => $ location）; 
 $ query_parameters {language} = $ self-> {language} if defined $ self-> {language}; 
 $ query_parameters {region} = $ self-> {region} if defined $ self-> {region}; 
 $ query_parameters {oe} = $ self-> {oe}; 
 $ query_parameters {sensor} = $ self-> {sensor}？ '真假'; 
 $ uri-> query_form（％query_parameters）; 
 my $ url = $ uri-> as_string; 
 
 if（$ self> {client} and $ self-> {key}）{
 $ query_parameters {client} = $ self-> {client}; 
 $ uri-> query_form（％query_parameters）; 
 
 my $ signature = $ self-> make_signature（$ uri）; 
＃签名必须是查询字符串中的最后一个参数，否则您将获得403的
 $ url = $ uri-> as_string; 
 $ url。='& signature ='。$ signature if $ signature; 
} 
  

然后就像这样使用它：

  my $ location = $ geocoder-> reverseGeocode（location => '40 .7837366863403，-73.9882784482727'）; 
  

然后你可以像这样访问返回的对象：

  print $ location-> {formatted_address}; 
  

要查看地址的详细部分，请参阅以下链接作为指南：
< href =https://developers.google.com/maps/documentation/geocoding/ =nofollow> https://developers.google.com/maps/documentation/geocoding/

A Perl module exists in order to interface with the Google Maps API. The code is as follows:

 use Geo::Coder::Google;
 $geocoder = Geo::Coder::Google->new();
 @location = $geocoder->geocode(location => '1600 Pennsylvania Ave. Washington DC USA'); 

Site Source: http://search.cpan.org/~arcanez/Geo-Coder-Google-0.11/lib/Geo/Coder/Google/V2.pm

However I need to go from coordinates to address. How is that done even if that means using a different means in PERL? Please be advised that I tried the OpenMaps API and it is inaccurate. Google Maps seems to be much better.

解决方案

Answer:

1. Download the CPAN Geo::Coder::Google object.
2. Navigate your way to the V3.pm object.
3. Drop this module into the code.

sub reverseGeocode {my $self = shift;

my %param;
if (@_ % 2 == 0) {
    %param = @_;
} else {
    $param{location} = shift;
}



my $location = $param{location} 
    or Carp::croak("Usage: reverseGeocode(location => \$location)");

if (Encode::is_utf8($location)) {
    $location = Encode::encode_utf8($location);
}

my $uri = URI->new("http://$self->{host}/maps/api/geocode/json");
my %query_parameters = (latlng => $location);
$query_parameters{language} = $self->{language} if defined $self->{language};
$query_parameters{region} = $self->{region} if defined $self->{region};
$query_parameters{oe} = $self->{oe};
$query_parameters{sensor} = $self->{sensor} ? 'true' : 'false';
$uri->query_form(%query_parameters);
my $url = $uri->as_string;

if ($self->{client} and $self->{key}) {
    $query_parameters{client} = $self->{client};
    $uri->query_form(%query_parameters);

    my $signature = $self->make_signature($uri);
    # signature must be last parameter in query string or you get 403's
    $url = $uri->as_string;
    $url .= '&signature='.$signature if $signature;
}

Then just use it like this:

 my $location = $geocoder->reverseGeocode(location => '40.7837366863403,-73.9882784482727');

Then you can access returning object like so:

 print $location->{formatted_address};

To see the detailed parts of the address see the following link as a guide: https://developers.google.com/maps/documentation/geocoding/

这篇关于使用Perl和Google Maps API进行反向地理编码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！