for i = lm1020_1(:,3) lm1020_11 = location(i,1020); lm1020_11(2) = populationA(i); lm1020_11(:,3) = i; end
时间: 2024-05-31 20:14:18 浏览: 10
这是一个简单的for循环代码块,它的目的是从一个名为lm1020_1的矩阵中提取第三列的数据,并将这些数据作为参数传递给一个名为location的函数,该函数返回一个名为lm1020_11的新矩阵。然后,该代码块将从另一个名为populationA的矩阵中提取与lm1020_11矩阵的行匹配的数据,并将其存储在lm1020_11矩阵的第二列中。最后,该代码块将i值存储在lm1020_11矩阵的第三列中,以便将来可以跟踪原始数据。
相关问题
只申请了 ACCESS_COARSE_LOCATION 权限,如何获取到经纬度
如果您只申请了 `ACCESS_COARSE_LOCATION` 权限,那么您只能获得粗略位置信息,无法获得精确的经纬度信息。
要获取粗略位置信息,您可以使用 `LocationManager.NETWORK_PROVIDER` 作为位置提供程序来获取位置信息。示例代码如下:
```java
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// 没有权限,请求权限
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, REQUEST_CODE);
return;
}
Location location = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
double latitude = location.getLatitude();
double longitude = location.getLongitude();
Log.d(TAG, "Latitude: " + latitude + ", Longitude: " + longitude);
}
```
请注意,由于使用的是网络位置提供程序,因此获取到的位置信息可能会有一定的误差。
如果您想要获得更精确的位置信息,需要申请 `ACCESS_FINE_LOCATION` 权限,并使用 `LocationManager.GPS_PROVIDER` 作为位置提供程序来获取位置信息。示例代码如下:
```java
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// 没有权限,请求权限
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, REQUEST_CODE);
return;
}
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
double latitude = location.getLatitude();
double longitude = location.getLongitude();
Log.d(TAG, "Latitude: " + latitude + ", Longitude: " + longitude);
}
```
请注意,使用 GPS 作为位置提供程序可以获得更精确的位置信息,但是在室内或者信号不好的区域可能会无法获取位置信息。
SELECT vtr.id as id, domain_name, vpn_user, ip_address, http_port, time, FROM_UNIXTIME(TIME,'%Y-%m-%d %H:%i:%S') AS happenTime, dw.`deviceID`, d.`systemType`, d.`devTypeID`,b.`location`, lm.`referenceName`, tm.`partyUnitName`, tm.`safetyGearName`,vtr.estime FROM parter_upgrade_scs_saas_main.video_traffic_record vtr INNER JOIN parter_upgrade_scs_device.device_webcam dw on (vtr.domain_name = dw.domain and vtr.http_port = dw.httpPort) LEFT JOIN parter_upgrade_scs_device.device d ON dw.deviceID = d.id LEFT JOIN parter_upgrade_scs_resource.`bewatched` b ON d.`ownerID`= b.`id` AND d.`ownerType`=2 LEFT JOIN parter_upgrade_scs_saas_main.lease_manage lm ON d.leaseID = lm.id LEFT JOIN parter_upgrade_scs_saas_main.tenant_manage tm ON lm.tenantID = tm.id用elasticsearch怎么写?
以下是一个可能的Elasticsearch查询:
```
POST parter_upgrade_scs_saas_main.video_traffic_record/_search
{
"_source": ["id", "domain_name", "vpn_user", "ip_address", "http_port", "time", "estime"],
"query": {
"bool": {
"must": [
{
"exists": {
"field": "estime"
}
}
]
}
},
"aggs": {
"group_by": {
"composite": {
"size": 1000,
"sources": [
{
"domain_name": {
"terms": {
"field": "domain_name"
}
}
},
{
"http_port": {
"terms": {
"field": "http_port"
}
}
},
{
"date": {
"date_histogram": {
"field": "time",
"calendar_interval": "day",
"format": "yyyy-MM-dd"
}
}
}
]
},
"aggs": {
"id": {
"top_hits": {
"size": 1,
"_source": ["id"]
}
},
"vpn_user": {
"top_hits": {
"size": 1,
"_source": ["vpn_user"]
}
},
"ip_address": {
"top_hits": {
"size": 1,
"_source": ["ip_address"]
}
},
"happenTime": {
"top_hits": {
"size": 1,
"_source": {
"script": {
"source": "doc['time'].value.toInstant().atZone(ZoneId.of('Asia/Shanghai')).format(DateTimeFormatter.ofPattern('yyyy-MM-dd HH:mm:ss'))"
}
}
}
},
"deviceID": {
"terms": {
"field": "deviceID"
}
},
"systemType": {
"terms": {
"field": "systemType"
}
},
"devTypeID": {
"terms": {
"field": "devTypeID"
}
},
"location": {
"top_hits": {
"size": 1,
"_source": ["location"],
"script_fields": {
"location": {
"script": {
"source": "doc['location'].value"
}
}
}
}
},
"referenceName": {
"top_hits": {
"size": 1,
"_source": {
"script": {
"source": "doc['location'].value != null ? doc['location'].value : ''"
}
},
"script_fields": {
"referenceName": {
"script": {
"source": "def location = doc['location'].value != null ? doc['location'].value : ''; def parts = location.split('/'); parts.length > 0 ? parts[0] : ''"
}
}
}
}
},
"partyUnitName": {
"top_hits": {
"size": 1,
"_source": {
"script": {
"source": "doc['deviceID'].value != null ? doc['deviceID'].value : ''"
}
},
"script_fields": {
"partyUnitName": {
"script": {
"source": "def deviceID = doc['deviceID'].value != null ? doc['deviceID'].value : ''; def parts = deviceID.split('_'); parts.length > 0 ? parts[0] : ''"
}
}
}
}
},
"safetyGearName": {
"top_hits": {
"size": 1,
"_source": {
"script": {
"source": "doc['deviceID'].value != null ? doc['deviceID'].value : ''"
}
},
"script_fields": {
"safetyGearName": {
"script": {
"source": "def deviceID = doc['deviceID'].value != null ? doc['deviceID'].value : ''; def parts = deviceID.split('_'); parts.length > 1 ? parts[1] : ''"
}
}
}
}
}
}
}
}
}
```
这个查询会按照`domain_name`,`http_port`和日期分组,同时在每个组内找到满足`estime`字段存在的文档,并从中提取所需的字段。其中,`happenTime`字段使用脚本来将UNIX时间戳转换为本地时间,`location`字段使用脚本来提取其中的第一部分作为`referenceName`,`deviceID`字段使用脚本来提取其中的第一部分作为`partyUnitName`,提取第二部分作为`safetyGearName`。
请注意,这个查询可能需要根据您的数据模型和查询需求进行适当的调整。