标签:
linux挂载文件目录 |
标签:
kafkawebsocketnodejs |
开发工具语言:Nodejs
开发依赖包:kafka-node-master
标签:
crontab相对路径 |
标签:
wordpressxmlrpcpython |
# -*- coding: utf-8 -*-
# @Time : 2016/12/12 16:23
# @Author : Luming
# @File : posts.py
# @Software: PyCharm
from wordpress_xmlrpc import Client,WordPressPost,WordPressTerm
from wordpress_xmlrpc.methods.posts import GetPosts, NewPost,EditPost
from wordpress_xmlrpc.methods
标签:
it |
标签:
前沿技术百度云 |
标签:
365nginx跨域静态文件发布 |
标签:
it球面两点的距离方位角 |
标签:
itmysql空间分析点与点最短距离 |
创建数据库字段属性样例
Create table shop (
station_id int(3) primary key,
Location POINT
);
st_distance 函数
st_distance 函数是从mysql5.6.1才加入的
SET @g1 = POINT(1,1), @g2 = POINT(2,2);
select st_distance (@g1, @g2); 输出结果:1.4142135623730951
st_distance 计算的结果单位是度,需要乘111195(地球半径6371000*PI/180)是将值转化为米.
例 距离39.54,116.2坐标50公里最近的点
SELECT
station,
(
FROM
HAVING distance<50
ORDER BY
ASC LIMIT 0,1
标签:
itc类序列化json |
类名:Tojsondata.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.Serialization;
namespace CheckApp
{