Method not allowed error 405 post ajax request to post route

am getting this method not allowed 405 error when am trying to post to database through ajax post request to post route. Please Help

$.ajaxSetup({
headers: { 'X-CSRF-Token' : $('meta[name="csrf-token"]').attr('content') } 

});
$.ajax({

url: '',
data:{"finalPointArray" : finalPointsMap,
      "tourId":tourId,
      "picWidth":picWidth,
      "picName":picName
      },
async:true,
type:'post',
success:function(response){
  console.log("coordinates sent");
  finalPointsMap=[];
  pointsMap=[];
  pointsMap.push(initialPoint);


},
error:function(e){
  console.log("error");
  console.log(e);
}

});

i have also tried url: '',

but it is also not working my route is : Route::resource('/HeatMapCoordinates','HeatMapCoordinatesController');

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