The Global Positioning System (positioning System,gps) is a medium-range circular orbiting satellite navigation system that provides accurate positioning, speed measurement and high precision time standards for the vast majority of the Earth's surface (98%). GPS is widely used in military, logistics, geography, mobile phones, digital cameras, aviation and other fields, has a very powerful function.
Android
This article describes the PHP calculation of Baidu map Two GPS coordinates of the distance between the method. Share to everyone for your reference.
The implementation methods are as follows:
Copy Code code as follows:
/**
* Calculate the distance between two coordinates (m)
* @param float $fP 1Lat starting point (latitude)
* @param float $fP 1Lon starting point (longitude)
* @param float $fP 2Lat end point (latitude)
* @param floa
First you need to know the GPS coordinate system. The GPS coordinate system follows the WGS-84 standard, under which the GPS chip can emit different packet formats. The GPS data can be classified into Gpgga, Gpgsa, GPGSV, GPRMC and so on, according to the different frame-frame head of the data. These frame headers iden
Find the detailed explanation of smb. conf from the Internet, and it is still Chinese!In Linux terminal mode, enter # vi/etc/samba/smb. conf to open smb. conf.
====================================== Global settings ====================== ======================================[Global] // set the overall SAMBA service environmentWorkgroup = hackase // set the workg
systems. Enter the operating system tag name to start the corresponding operating system, or press enter to start the default Operating System. Up to 16 images can be mentioned in Lilo. conf.Ii. Lilo. conf usageLet's take a look at the configuration file (/etc/Lilo. conf) started by lilo:Boot =/dev/hda3Map =/boot/MapInstall =/boot. BPromptTimeout = 50Message =/boot/messageDefault = newImage =/boot/vmlinuz-
/profile) or in your own user configuration file (such ~ /. Bash_profile); the library search path can also be set in the/etc/lD. So. conf file, and so on. This setting takes effect when the system starts, which may cause GTK + programs to use the new GTK + Runtime Library, which may cause some problems. Of course, if you find that it is no problem to replace the old version with the new version of GTK +, this setting method is more convenient. Add ~
Centos + nginx + php-fpm + php include fastcgi_params php page can be accessed but the page is blank. fastcgi_params and fastcgi. conf are miserable, and centosng.pdf
Today on centos, I found that the browser prompts 200 OK when accessing the page, and the html suffix is normal.
However, when accessing the php suffix, a blank page is returned, and no error information is found in all logs;
Then, in the nginx. conf
How limits. conf works:
Limits. the backend of conf works like this: limits. conf is the configuration file of pam_limits.so, And then/etc/pam. d/The application under calls pam _***. so module. For example, when a user accesses the server, the service program sends the request to the PAM module. The PAM module sends the request to/etc/pam according to the servi
Ubuntu failure in resolv. conf restart
In general, we can use resolv. conf in Ubuntu to set the DNS address. After restart, the address in resolv. conf will still return the original content.
This is because the resolv. conf file is actually a Link file,
There is a resolvconf service in Ubuntu, which is used to co
X configuration file Xorg. conf Analysis
Reproduced in: http://blog.csdn.net/comcat/archive/2007/04/02/1549658.aspx
Author: zhuangzhi Lingyun's csdn blog
The configuration of X is actually to generate the file/etc/X11/Xorg. conf.
The following sections are usually configured:
A. The display information is written in this section.
Section "Monitor"
Identifier "monitor0"Vendorname "VSC"Modelname "vsc1609"Hori
Centos + nginx + php-fpm + phpincludefastcgi_paramsphp page can be accessed but blank, fastcgi_params and fastcgi. conf is terrible. today, I am tossing it on centos to find that the browser prompts 200 OK when accessing the page. the html suffix is normally accessed.
However, when accessing the php suffix, a blank page is returned, and no error information is found in all logs;
Then, in the nginx. conf
Install Xen4.0 on the lab server and update the Linux kernel (the RHEL kernel version is 2.6.18-128. el5, and 2.6.31.8 is required for installation ). After the installation is complete, the startup file cannot be found at startup. It turns out that the startup boot file grub. conf has an error. I want to save the job in linuxrescue mode. However, I deleted the kernel of 2.6.18-128. el5 and failed to move the kernel in the new version. Busy for a day,
1. redis. conf configuration parameters:
# Running as a daemon
Daemonize Yes
# If a later process runs, you must specify a PID. The default value is/var/run/redis. PID.
Pidfile redis. PID
# Bind the Host IP address. The default value is 127.0.0.1.
# Bind 127.0.0.1
# Redis default listening port
Port 6379
# How many seconds after the client is idle, disconnect. The default value is 300 (seconds)
Timeout 300
# Log record level, with four optional values
1. Introduction to sysv-RC-Conf
Sysv-RC-conf is a powerful Service Management Program. The comments of the masses are that sysv-RC-conf is better than chkconfig.Ii. Background Knowledge1. Ubuntu running levelThe Linux system runs on a specified running level at any time, and different running-level programs and services are different. The work to be done and the
# Info: Theconffornginx # Author: dingtm # CTime: 2010.07.01userwwwwww; # Number of Users and Groups running NGINX worker_processes4; # Number of nginx processes. we recommend that you specify the number of CPUs, it is generally a multiple of each...
# Info: The conf for nginx# Author: dingtm# CTime: 2010.07.01User www; # Users and Groups used to run NGINXWorker_processes 4; # Number of nginx processes. it is recommended to specify the number of CPUs.
This article describes publishing a project by adding a configuration file under the Conf/catalina/localhost directory in Tomcat. Because this is the least invasive of Tomcat, you only need to add a new configuration file, do not have to modify the original configuration, and support dynamic parsing, modify the code directly into effect (except for the modification of the configuration).Create an XML file under the
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