Perl MongoDB地理空间查询

Question

I am trying to perform a geospatial query with the MongoDB::Collection package for Perl, but it's not working. Does anyone have an example use? Does it even work? There is no specific example in the package documentation and the example documentation on the site isn't working.

Thanks

Answer 1

its only array query so you can convert this code to perl:

$earthRadius = 6378; // km
$range = 35; // max search km
$max = $range / $earthRadius;

array(
'lat' =>
    array('$within' =>
       array('$centerSphere' =>
          array(array(floatval(  52.417 ), floatval( 16.883 )),
              $range/$earthRadius)
        )
    )
);


$collection->ensureIndex(array('loc.lat' => "2d"), array('background' => true) );