问题:

While trying to setup to use the Geospatial Index on MongoDB, I run into the error message that the location array is not in the correct format.

This is my collection "test".

{     "_id" : ObjectId("4f037ac176d6fdab5b00000a"),     "CorporateId" : "XYZ12345",     "Places" : [            {                     "Location" : {                            "Longitude" : "50.0",                            "Latitude" : "50.0"                    },                    "ValidFrom" : "2011-11-01 00:00:00",                    "ValidTo" : "2021-12-31 00:00:00",                    "itemCount" : "1"            }     ] }

Once I run this code.

db.test.ensureIndex({"Places.Location": "2d"});

I get this error message

location object expected, location array not in correct format

My assumption is that the Long/Lat needs to be a number. Currently it is an object.

typeof db.test.Places.Location.Longitude -> Object typeof db.test.Places.Location -> Object

My problem is that since I am still quite new to MongoDB, I don't really know how to approach this problem in the best way.

回答1:

Mongodb expects numbers for the coordinates while you passed in a string.

"Location" : {                        "Longitude" : 50.0, // <<<<<<<<<<<<<< use numbers instead                        "Latitude" : 50.0                },

see http://www.mongodb.org/display/DOCS/Geospatial+Indexing for details.

回答2:

The problem has been fixed by converting the Location parameters into a float type like this.

$var = $JSonString['Places'];  $test=count($var);   $i=0;  for ( $i=0; $i<$test;$i++){        $lon = (float)$JSonString['Places'][$i]['Location']['Longitude'];        $lat = (float)$JSonString['Places'][$i]['Location']['Latitude'];        $JSonString['Places'][$i]['Location']['Longitude'] =$lon ;        $JSonString['Places'][$i]['Location']['Latitude'] =$lat ;        //error_log($lon . "->".gettype($JSonString['Places'][$i]['Location']['Latitude']), 3 , "/var/tmp/my-errors.log");  }

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