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Chapter 4 visualization technology (4)

from VTK/examples/visualizationalgorithms/Tcl/warpcomb. TCL ). Vtkplot3dreader pl3d Pl3d setxyzfilename "$ vtk_data_root/data/combxyz. bin" Pl3d setqfilename "$ vtk_data_root/data/combq. bin" Pl3d setscalarfunctionnumber 100 Pl3d setvectorfunctionnumber 202 Pl3d update Vtkstructuredgridgeometryfilter plane Plane setinputconnection [pl3d getoutputport] Plane setextent 10 10 1 100 1 100 Vtkstructuredgridgeo

Simple multi-to-one transmission NS2.

control packets to all senders // defines the commands that can be called in TCl. the add-connection command virtual int command (INT argc, const char * const * argv); Private: vector cons _; // The linked list bool running _ that stores all connection pointers; // running status };    In addition, we also define our own agent to facilitate control over the agent. We re-implemented the sendmsg and Recv functions to facilitate packet processing.Initia

Understanding the packet header of packet in NS2.

statement: packetheadermanager () {BIND ("hdrlen _", Packet: hdrlen _);} the original packet :: hdrlen _ is bound to the OTCL class packetheadermanager. Continue searching in the Tcl file and find such a function: packetheadermanager instproc allochdr Cl {set size [$ Cl set hdrlen _] $ self instvar hdrlen _ set ns_align 8 # Round Up to nearest ns_align bytes # (needed on iSCSI/Solaris) set incr [expr ($ size + ($ NS_ALIGN-1 ))~ ($ NS_ALIGN-1)] set b

Install spin and xspin in Linux

The Linux version used is Ubuntu8.10 (the latest Ubuntu11.10 can be tested by yourself). 1. Download the Linux version spin: kernel. The Linux version is Ubuntu 8.10 (Please test the latest Ubuntu 11.10 version by yourself) 1. Download Linux version of spin: http://spinroot.com/spin/Src/spin517.tar.gz 2. Download the Linux version of xspin: http://spinroot.com/spin/Src/xspin510.tcl 3. Download and install byacc: Sudo apt-get install byacc 4. Download

Install source-navigator and User Manual (zz) in Ubuntu)

snavigator after installation is complete[Root @ magiclinux Co., sourcenav-6.0] # snavigatorCan't find a usable Tk. TCL in the following directories:/Usr/local/share/tk8.3 /Usr/local/share/tk8.3/Tk. TCL: No event type or button # Or keysymNo event type or button # Or keysymWhile executing"Bind ListBox % W yview scroll [expr {-(% d/120) * 4}] Units}"(File "/usr/local/share/tk8.3/ListBox.

X11/xlib. h: the file or directory does not exist.

Errors During program compilation,In the Installation Log, we found that X11/xlib. h nosuch file or directory had read the information online. It turns out that x11m was not installed.Solution:Install X11 first, command for sudo apt-Get install libx11-devThe result still has the following error:Checking for main in-lxbsd... noChecking for socket in-lsocket... noChecking for gethostbyname in-lnsl... yesChecking for dcgettext in-lintl... noChecking for getnodebyname in-ldnet_stub... noChecking tha

Opencascade rational bezercurves

to the 3D superplane of ω = 1. The resulting projection curve is: Eliminate λ to obtain the rational beizer curve: 4. The effects of weighting factors In addition to the properties similar to those of the bezr curve, the modified properties of the Weight Factor (weights) are also added. 4.1 recoverability When the Weight Factor ω I = ω =0 (I = 0, 1,..., n), the rational beestimated curve degrades to the beestimated curve. Because ω is the same, the ω in the rational bezr curve formula can b

Install source-navigator and user manual in Ubuntu)

NavigatorMethod 1 (reproduced)Prompt for running snavigator after installation is complete[Root @ magiclinux Co., sourcenav-6.0] # snavigatorCan't find a usable Tk. TCL in the following directories:/Usr/local/share/tk8.3 /Usr/local/share/tk8.3/Tk. TCL: No event type or button # Or keysymNo event type or button # Or keysymWhile executing"Bind ListBox % W yview scroll [expr {-(% d/120) * 4}] Units}"(File "/u

Add a new application and proxy (2)

*){T _-> send_mm_pkt (); // send packets after the timer arrives} // When ack_timer _ expires, call mmapp: send_ack_pkt ()Void acktimer: expire (event *){T _-> send_ack_pkt ();} 2, // TCL InterpreterInt mmapp: Command (INT argc, const char * const * argv){TCL TCL = TCL: instance ();If (argc = 3 ){If (strcmp (argv [1]

[Stick to the top] complete installation process and related issues of ns2.33 on ubuntu12.10

Preparation: ubuntu12.10has been successfully installed. The installation package contains the ns2installation file. Here I am using ns-allinone-2.33.tar and preparing two other patches:Tk-8.4-lastevent.patchAndTk-8.4.18-tkBind.patch Step 1:Copy the ns2compressed package ns-allinone-2.33.tar.gz to the desktop, right-click and decompress it to the desktop, and copy the decompressed folder to the ready installation location, For example, in my folder home/WL (WL is the login user name), create a n

Automatic Linux Management: remote logon

authentication, you can log on to the SSHD server. For this security authentication method, the program can automatically enter the user name and password to achieve automatic login. Currently, objective CT, C, or Perl can be used. If C is used, you need to be familiar with the TCP/IP protocol, which is complicated to implement. if CT is used, because CT is based on Tcl, you need to be familiar with the Tcl

Centos6.5 install Redis2.6.16

Download and decompress wgethttp: // Unzip download and decompress Wget http://redis.googlecode.com/files/redis-2.6.16.tar.gzTar zxvf redis-2.6.16.tar.gzMusic redis-2.6.16 redisInstallation process/bin/sh: cc: command not found error Run the make command in the redis directory.An error occurred while executing make:/bin/sh: cc: command not found.Google solution: execute the following two commands:1. sudo yum-y install gcc-c ++ libstdc ++-devel2. make MALLOC = libcHandle 'hint: To run 'Make test'

The twists and turns of installing NS2.

successfully solves the problem. Problem 2: An error occurred while installing tk8.4.13 during the second NS2. The installation was interrupted and exited. In the Installation Log, we found that x11/xlib. h nosuch file or directory had read the information online. It turns out that x11M was not installed. Solution:Install X11 first, command for sudo apt-get install libx11-devThe result still has the following error:Checking for main in-lXbsd... noChecking for socket in-lsocket... noChecking for

Centos6.5 install Redis2.6.16

Centos6.5 install Redis2.6.16Download and decompress Wgethttp: // redis.googlecode.com/files/redis-2.6.16.tar.gzTar zxvf redis-2.6.16.tar.gzMusic redis-2.6.16 redisInstallation Process/bin/sh: cc: command not found Error Run the make command in the redis directory.An error occurred while executing make:/bin/sh: cc: command not found.Google solution: execute the following two commands:1. sudo yum-y install gcc-c ++ libstdc ++-devel2. make MALLOC = libcHandle 'hint: To run 'make test' is a good id

Interface __ns2 in NS

First Class Interface: The statement in Tcl: Set Chan ($j) [New Wimshchannel] C + + corresponding statement: 1. Define Wimshchannel Class Class Wimshchannel:public Tclobject {}; 2. Do the two-layer interface Static class Wimshchannelclass:public Tclclass { Public Wimshchannelclass (): Tclclass ("Wimshchannel") {} tclobject* Create (int, const char*const*) { Return (new Wimshchannel); } } Class_wimsh_channel; Type II Interface: The statement in

Hadoop cluster Master Node deployment scenario

Ø change/etc/hosts, add all cluster machine IP to host name mappings Ø copy Hadoop package hadoop.tar.gz to/usr/local Ømd5sum Check hadoop.tar.gz package: md5sum hadoop.tar.gz Ø Decompression hadoop.tar.gz Package: Tar-xzf hadoop.tar.gz Ø Change hadoop-1.0.3 directory permissions: Chown-r hadoop:hadoop hadoop-1.0.3 Ø build Hadoop directory Soft link: ln-s hadoop-1.0.3 Hadoop Ø set up the/home/bin directory and copy the tool to the directory Ø Change the/home/bin directory permission to 77

NS2 Installation Method

system. Therefore, we can only execute the "ns" command in the installation directory after the installation is complete. To execute the command in any directory, we need to modify the system.This note asks us to set the environment variables as follows:#:gedit ~/.BASHRCBASHRC This file is a hidden file in the "/root/" directory.Add the following content:#added by back1860 for NS2Path= $PATH:/usr/share/ns-allinone-2.34/bin:/usr/share/ns-allinone-2.34/tcl8.4.18/unix:/usr/share/ Ns-allinone-2.34/

Ubuntu 16--installs--ns2.35 and Nam

  Ubuntu 16.04 Installation Ns2.35+namSummarize the following installation steps1: Update sourcesudo apt-get update #更新源列表sudo apt-get upgrade #更新已经安装的包sudo apt-get dist-upgrade #更新软件, upgrade system2: Install the NS2 required packagesudo apt-get install build-essentialsudo apt-get install tcl8.5 tcl8.5-dev tk8.5 tk8.5-dev #for tcl and TKsudo apt-get install Libxmu-dev libxmu-headers #for nam3: Download the installation package and install the officia

Gigabit access switch (1)

12 out of the 18 Gigabit access switches with 2 Gigabit ports and 6 out of 1 gigabit port. Only two vswitches With gigabit copper ports are available. The most Gigabit ports are 1000Base-SX ports. Only Flexhammer24 of harbor technology has a 1000Base-LX port. Among these switches, The EDIMAXES-5224r +, Netcore 7224NSS, Netcore 7224MST, LeapComm GMS5024 three vswitches are configurable, harbor FlexHammer24, FlexHamm16i, ThinkerEX3124A switch belongs to the third layer switch. The remaining 11 vsw

Centos6.5 install redis

Version: The redis-2.8.19.tar.gz checks whether the following dependencies are installed, if not, otherwise there will be exceptions. Yuminstallgcc-cyuminstall-ytcl. ✓ Mvredis-2.8.19 Version: The redis-2.8.19.tar.gz checks whether the following dependencies are installed, if not, otherwise there will be exceptions. Yum installgcc-c yum install-y tcl. 1. Get the Installation File redis-2.8.19.tar.gz http://redis.io/download 2. Unzip the file tar-xzvf r

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