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Google maps api 3 google maps V3多段线圆绘图,错误:构造函数参数0的值无效_Google Maps Api 3_Polyline - Fatal编程技术网

Google maps api 3 google maps V3多段线圆绘图,错误:构造函数参数0的值无效

Google maps api 3 google maps V3多段线圆绘图,错误:构造函数参数0的值无效,google-maps-api-3,polyline,Google Maps Api 3,Polyline,我正在创建一个地图,允许用户输入一个邮政编码,并在其周围绘制一个半径。我对google.maps.Polyline有问题。我收到的错误消息是“构造函数参数0的值无效” <!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style type="text/css"> h

我正在创建一个地图,允许用户输入一个邮政编码,并在其周围绘制一个半径。我对google.maps.Polyline有问题。我收到的错误消息是“构造函数参数0的值无效”

<!DOCTYPE html> 
<html> 
<head> 
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> 
<style type="text/css">  
    html { height: 100% }   
    body { height: 100%; margin: 0px; padding: 0px }  
    #map_canvas { height: 100% } 
</style> 
<script type="text/javascript"   
  src="http://maps.google.com/maps/api/js?sensor=false"> 
 </script> 


</script>
<script type= "text/javascript">

var geocoder;   
var map;  


function initialize() {    
    geocoder = new google.maps.Geocoder();     
    var latlng = new google.maps.LatLng(-34.397, 150.644);    
    var myOptions = {       
        zoom: 8,      
        center: latlng,       
        mapTypeId: google.maps.MapTypeId.ROADMAP    
        }     
    map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);  
}    
function codeAddress() {    
    var address = document.getElementById("address").value;
    geocoder.geocode( { 'address': address}, function(results, status) {       
        if (status == google.maps.GeocoderStatus.OK) {         
        map.setCenter(results[0].geometry.location);        
        var marker = new google.maps.Marker({          
            map: map,             
            position: results[0].geometry.location
            }); 

        }
        else {        
        alert("Geocode was not successful for the following reason: " + status);       
        }     
        });   
        } 

function drawCircle() {
    var address=document.getElementById("address").value;
    var radius=document.getElementById("radius").value;
    var latitude=40;
    var longitude=0;
    geocoder.geocode( { 'address': address}, function(results, status){
    if (status==google.maps.GeocoderStatus.OK){
    latlng=(results[0].geometry.location);
    latitude=latlng.lat();
    longitude=latlng.lng();
    alert(latitude);
    alert(longitude);
    alert (radius);
    }   

    else{
        alert("Geocode was not successful for the following reason: " + status);
    }
    });





//Degrees to radians 
  var d2r = Math.PI / 180;
  alert("calc d2r " + d2r);
 //  Radians to degrees
 var r2d = 180 / Math.PI;
 alert("calc r2d " + r2d);
 // Earth radius is 3,963 miles
 var cLat = (radius / 3963) * r2d;
 alert("calc cLat " + cLat);
  var cLng = cLat / Math.cos(latitude * d2r);
  alert("calc cLng " + cLng);

  //Store points in array 
  var points = [];
  alert("declare array ");

  // Calculate the points
  // Work around 360 points on circle
  for (var i=0; i < 360; i++) {

   var theta = Math.PI * (i/16);

   // Calculate next X point 
   circleX = longitude + (cLng * Math.cos(theta));            
    // Calculate next Y point 
   circleY = latitude + (cLat * Math.sin(theta));
    // Add point to array 
    points.push(new google.maps.Point(circleX, circleY));


 };
    alert("completed loop");
    var Polyline_Path = new google.maps.Polyline({
    path: points,
    strokeColor: "#003F87",
    // color of the outline of the polyline
    strokeOpacity: 1,
    // between 0.0 and 1.0
    strokeWeight: 5
    // The stroke width in pixels
    });
    Polyline_Path.setMap(map);



   //Add points to map
    //var sColor="#003F87";
    //alert("color");
    //var stroke=.5;
    //alert("stroke");
    //map.addOverlay(new GPolyline(points, sColor, stroke));
    //alert("added points to map");

}


</script>
</head>
    <body onload="initialize()"> 
        <div id="map_canvas" style="width:500px; height:460px;
        -moz-outline-radius:20px; -moz-box-sizing:padding-box; -moz-outline-style:solid ;-moz-outline-color:#9FB6CD; 
        -moz-outline-width:10px;"></div>  
        <div>     
            Zip Code: <input id="address" type="textbox" value="">    
            Radius:<input id="radius" type="textbox" value="">
            <input type="button" value="Find" onclick="codeAddress() ">   
            <input type="button" value="Draw Radius" onclick= "drawCircle() ">
        </div> 
    </body>
</html>

html{高度:100%}
正文{高度:100%;边距:0px;填充:0px}
#地图画布{高度:100%}
var地理编码器;
var映射;
函数初始化(){
geocoder=新的google.maps.geocoder();
var latlng=新的google.maps.latlng(-34.397150.644);
变量myOptions={
缩放:8,
中心:拉特林,
mapTypeId:google.maps.mapTypeId.ROADMAP
}     
map=new google.maps.map(document.getElementById(“map_canvas”),myOptions);
}    
函数codeAddress(){
var address=document.getElementById(“地址”).value;
geocoder.geocode({'address':address},函数(结果,状态){
如果(status==google.maps.GeocoderStatus.OK){
map.setCenter(结果[0].geometry.location);
var marker=new google.maps.marker({
地图:地图,
位置:结果[0]。几何体。位置
}); 
}
否则{
警报(“地理编码因以下原因未成功:“+状态”);
}     
});   
} 
函数drawCircle(){
var address=document.getElementById(“地址”).value;
var radius=document.getElementById(“radius”).value;
纬度=40;
var经度=0;
geocoder.geocode({'address':address},函数(结果,状态){
if(status==google.maps.GeocoderStatus.OK){
latlng=(结果[0]。几何体。位置);
纬度=latlng.lat();
经度=latlng.lng();
警报(纬度);
警报(经度);
警报(半径);
}   
否则{
警报(“地理编码因以下原因未成功:“+状态”);
}
});
//度到弧度
var d2r=Math.PI/180;
警报(“计算d2r”+d2r);
//弧度
var r2d=180/Math.PI;
警报(“计算r2d”+r2d);
//地球半径为3963英里
var cLat=(半径/3963)*r2d;
警报(“calc cLat”+cLat);
var cLng=cLat/Math.cos(纬度*d2r);
警报(“计算cLng”+cLng);
//在数组中存储点
var点=[];
警报(“声明数组”);
//计算积分
//围绕圆上的360点工作
对于(变量i=0;i<360;i++){
varθ=数学PI*(i/16);
//计算下一个X点
circleX=经度+(cLng*Math.cos(θ));
//计算下一个Y点
圆圈=纬度+(克拉特*数学正弦(θ));
//将点添加到阵列
points.push(新的google.maps.Point(circleX,circleY));
};
警报(“完成循环”);
var Polyline_Path=新建google.maps.Polyline({
路径:点,
strokeColor:#003F87“,
//多段线轮廓的颜色
频闪不透明度:1,
//介于0.0和1.0之间
冲程重量:5
//笔划宽度(以像素为单位)
});
多段线路径设置图(map);
//向地图添加点
//var sColor=“#003F87”;
//警惕(“颜色”);
//var-stroke=.5;
//警惕(“中风”);
//map.addOverlay(新的GPolyline(点、颜色、笔划));
//警报(“向地图添加点”);
}
邮政编码:
半径:

您正试图使用
路径
属性的
对象数组创建
多段线
(作为变量
多段线
)。但是,
路径
属性必须是
LatLng
对象数组