PrefaceWhen you draw a statistical graph, more than half of the time is spent on the data-shaping operation before invoking the drawing command. Because the data frame must be converted to the appropriate format before the data can be sent to the drawing function.This article will give some basic tips on using the R language for data shaping, and more technical details are recommended in the "R Language Core Handbook".Data frame Molded type1. Create Data Frame-data.frame ()# create vector pp = c
(20110622: Update download link)
I recently wrote a paper on the ECG signal compression algorithm based on wavelet transform. I searched Baidu and professional forums for how to obtain the ECG signal test data, I found many friends worried about it. Now that my thesis has been written, I will write out how to obtain and process the ECG data in my contribution for your reference, saving the trouble of hard work in Baidu and forums.
I. First, there are two ways to observe, analyze, and diagnose EC
Date (). getseconds ())//45Getmilliseconds ()Description: Returns millisecondsConsole.log (new Date (). getmilliseconds ()) //665Parse ()Description: Returns the number of milliseconds from midnight 1970/1/1 to the targetConsole.log (Date.parse (New Date ()))//1497176393000SetDate ()Description: Set a day in the current monthvar dat=New datedat.setdateconsole.log (Dat.getdate ()) //20 Setmonth ()Description: Set the current monthvar
use of more than 90% in space by sending mail to send a warningCopy CodeThe code is as follows:#!/bin/bash#monitor Available disk spaceSpace= ' DF | Sed-n '/\/$/P ' | Gawk ' {print $} ' | Sed ' s/%//'If [$SPACE-ge 90]Then[Email protected]Fi4. Monitor CPU and Memory usageCopy CodeThe code is as follows:#!/bin/bash#script to capture system statisticsOutfile=/home/xu/capstats.csvDate= ' Date +%m/%d/%y 'Time= ' Date +%k:%m:%s 'timeout= ' uptime 'Vmout= ' Vmstat 1 2 'Users= ' echo $TIMEOUT | Gawk '
space of the host, when the use of more than 90% in space by sending mail to send a warning#!/bin/bash#monitor Available disk spaceSpace= ' DF | Sed-n '//$/P ' | Gawk ' {print $} ' | Sed ' s/%//'If [$SPACE-ge 90]Then[Email protected]Fi4. Monitor CPU and Memory usage#!/bin/bash#script to capture system statisticsOutfile=/home/xu/capstats.csvDate= ' Date +%m/%d/%y 'Time= ' Date +%k:%m:%s 'timeout= ' uptime 'Vmout= ' Vmstat 1 2′Users= ' echo $TIMEOUT | Gawk ' {print $4} 'Load= ' echo $TIMEOUT | Ga
; ip_blocking. In the box, enter :~ /. Mldonkey/web_infos/level1.gz
D. Import the server metThe default server cannot be used for quick download. Servers label-> Import Server. met input: http://www.emule.org.cn/server.met
F. Enable KAD and Overnet:In option-> net-> enable_kademlia, select true, and enable_overnet select true.
Copy the contact. dat and nodes. dat files to the/home/username/. mldonkey folder
The article "IP address- gt; geographic location conversion evaluation" mentions that using the ip2addr function to directly read IP database files is the most efficient. compared with using the MySQL database to store IP data, SQL queries are the most efficient. However, the IP database file QQWry. dat is GB2312 encoded. Now I need the geographic location results for UTF-8 encoding. If you use the MySQL method, you can convert the data into UTF-8 enc
Yes. I use ssh to manage the space and use the wget command in the repo folder (using php, test. dat and index. php files in the same directory) download a 50 m file named test. dat, but the local browser uses urltest. dat cannot be accessed, but when I use wget to download a file about 1 MB, it is also placed in the same path, through urltest.
Alternative recovery for accidental deletion of VCD files
Nowadays, many people will directly copy some good VCD files to the hard disk for storage. But have you ever deleted these rare classics by mistake? So how can we manually restore the software without restoring it?
I found an alternative recovery method, and the effect is not bad. First, you must know the name of the accidentally deleted VCD file and the original file storage path. Generally, the main video file of VCD is the Mpegav folde
-precision floating-point number to a binary file
% Generate A matrix of two rows and three columns of double-precision floating point number type A = rand (2, 3); % open 'test in binary write mode ('W') in the current working directory. dat 'fid = fopen ('test. dat ', 'w'); % write the elements of matrix A to the binary file fwrite (fid, A, 'singles') associated with fid as single-precision floating point
:
[Geoip]Geoip. custom_directory = "D: \ php5.3 \ geo \"
Test Code
Note that GeoIPCity. dat used in geoip. dll is GeoLiteCity. dat. when using it, pay attention to the prompt.
The code is as follows:
Echo geoip_country_name_by_name ("8.8.8.8"). "\ n ";Print_r (geoip_record_by_name ("8.8.8.8 "));Echo geoip_country_name_by_name ("61.139.2.69"). "\ n ";Print_r (geoip_record_by_name ("61.139.2.69 "));
3. Max
As the main carrier-level, enterprise-level core, and aggregation switch of Huawei, S9300 series switches are widely used in different environments in various industries. However, mpls vpn, NQA, and IPv6 functions, which are important functions, must be licensed separately. If the License is not loaded, the basic functions of the switch can be used normally. However, mpls vpn, NQA, and IPv6 are not supported.
This article takes 9306 as an example.
1. How do I apply for a license?
To apply for Li
File System File (.datav defines the location of the files and folders set when the target device is released. When the target device is cold-started, filesys.exe will use these file system files to create folders, links, and files in the memory.By modifying project. in the DAT file, you can define any root folder except Windows Folder. In addition, you can also copy or link files from the Windows folder in the Rom. These files and links are created i
Document directory
Web Part templates
Http://www.sdgn.nl/Default.asp? A1pid = 57 pdguh> a1sid = 229854200434 url = 154106 pdwl
Inleiding Web Part Development
Met Microsoft SharePoint Portal Server Kun je portal-Zookeeper waarin kennis en expertise uit verschillende bronnen gebundeld aan gebruikers kunnen Worden living. SharePoint biedt een krachtige zoekmachine en Document Management Agency.
Het scherm van een SharePoint pagina is opgebouwd uit verschillende onderdelen, die Web parts Worden
(All files to be backed up are in the config folder of Emule.) The five files to be backed up must be:
Clients. Met -- a list of known customers (The Point files of other friends are also saved in)
Cryptkey. dat-Security Authentication Key (the security key you need to verify your userhash from someone else)
Preferences. dat -- personal userhash value (stores files related to your personal userhash)
Pre
boot area from a normal computer. dat, after starting with a floppy disk, run the debug program and enter the following command:
-N mboot. DAT: Read the file mboot. dat.
-1 800 read to the current segment 0800
-M 7Be 1 40 9be: copy the original Partition Table to the normal primary boot Area
XXXX: 0100 mov ax, 301 write 0800 pieces of data back to the Boot Secto
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