Question

当我使用此代码时，我会看到错误消息，然后gps数据然后返回错误消息。谁能告诉我为什么会这样呢？

var arDrone = require('ar-drone');
var droneClient = arDrone.createClient();
droneClient.config('general:navdata_demo', 'FALSE'); // get back all data the copter can send
droneClient.config('general:navdata_options', 777060865); // turn on GPS

droneClient.on('navdata', function(navdata) {

  try {
    console.log(navdata.gps.latitude + ', ' + navdata.gps.longitude);
}
catch(err) {
    console.log(err.message);
}


});

这是我执行此操作时看到的内容。似乎gps数据永远不会回来。

无法读取属性＆＃39;纬度＆＃39;的未定义43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156 43.6330829，-116.4467156无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39; of undefined无法读取属性＆＃39;纬度＆＃39;未定义的

Answer 1

有时navdata事件没有gps属性。尝试记录navdata而不是navdata.gps.latitude和navdata.gps.longitude。

ar-drone无法读取属性＆＃39;纬度＆＃39;未定义的间歇性数据

1 个答案: