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  • Matlab - Find point of intersection between two vectors

    - by Silv3rSurf
    I have a very simple matlab question. What is the easiest way to find the point of intersection between two vectors. I am not familiar with the various matlab fuctions -- it seems like there should be one for this. For example if I have one vector from (0,0) to (6,6) and another vector from (0,6) to (6,0), I need to determine that they intersect at (3,3) Thanks.

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  • Dual-boot more than two operating systems

    - by aldorado
    I currently run Windows 7 and Ubuntu 12.04 as a dual-boot system. I need Linux, but Ubuntu freezes at least once a day. So I want to replace it with another distribution like Debian or LMDE. On the other hand I am a little concerned that I'll have troubles working with a less user friendly operating system than Ubuntu. So would it be possible to just scale down the Windows partition and install the next Linux as a third system? Thus, with a "triple-boot system" I could keep Ubuntu until I feel familiar with the new system. Afterwards, I guess, it should be possible to replace the Ubuntu partition by expanding the new system?

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  • Bridging two wireless interfaces with brctl?

    - by AK_
    I have this topology: [internet] ^ L-------[wlan0]-[host]-[wlan1]-----[client-1] I tried to bridge wlan0 wlan1 but it wont work with brctl; but magically when I issue this command #iw set dev wlan0 4addr on it adds wlan0 to the bridge BUT I lost all internet connection and I was unable to hook it to the internet router. can somebody please explain why did that happen and is there a way to get this done ?

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  • How to merge two test into one RSpec

    - by thefonso
    Both the last two test work individually...but when both are set to run (non pending) I get problems. question: can I create a test that merges the two into one? How would this look?(yes, I am new to rspec) require_relative '../spec_helper' # the universe is vast and infinite....and...it is empty describe "tic tac toe game" do context "the game class" do before (:each) do player_h = Player.new("X") player_c = Player.new("O") @game = Game.new(player_h, player_c) end it "method drawgrid must return a 3x3 game grid" do @game.drawgrid.should eq("\na #{$thegrid[:a1]}|#{$thegrid[:a2]}|#{$thegrid[:a3]} \n----------\nb #{$thegrid[:b1]}|#{$thegrid[:b2]}|#{$thegrid[:b3]} \n----------\nc #{$thegrid[:c1]}|#{$thegrid[:c2]}|#{$thegrid[:c3]} \n----------\n 1 2 3 \n") @game.drawgrid end #FIXME - last two test here - how to merge into one? it "play method must display 3x3 game grid" do STDOUT.should_receive(:puts).and_return("\na #{$thegrid[:a1]}|#{$thegrid[:a2]}|#{$thegrid[:a3]} \n----------\nb #{$thegrid[:b1]}|#{$thegrid[:b2]}|#{$thegrid[:b3]} \n----------\nc #{$thegrid[:c1]}|#{$thegrid[:c2]}|#{$thegrid[:c3]} \n----------\n 1 2 3 \n").with("computer move") @game.play end it "play method must display 3x3 game grid" do STDOUT.should_receive(:puts).with("computer move") @game.play end end end just for info here is the code containing the play method require_relative "player" # #Just a Tic Tac Toe game class class Game #create players def initialize(player_h, player_c) #bring into existence the board and the players @player_h = player_h @player_c = player_c #value hash for the grid lives here $thegrid = { :a1=>" ", :a2=>" ", :a3=>" ", :b1=>" ", :b2=>" ", :b3=>" ", :c1=>" ", :c2=>" ", :c3=>" " } #make a global var for drawgrid which is used by external player class $gamegrid = drawgrid end #display grid on console def drawgrid board = "\n" board << "a #{$thegrid[:a1]}|#{$thegrid[:a2]}|#{$thegrid[:a3]} \n" board << "----------\n" board << "b #{$thegrid[:b1]}|#{$thegrid[:b2]}|#{$thegrid[:b3]} \n" board << "----------\n" board << "c #{$thegrid[:c1]}|#{$thegrid[:c2]}|#{$thegrid[:c3]} \n" board << "----------\n" board << " 1 2 3 \n" return board end #start the game def play #draw the board puts drawgrid #external call to player class @player = @player_c.move_computer("O") end end player_h = Player.new("X") player_c = Player.new("O") game = Game.new(player_h, player_c) game.play

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  • SAS/R calculate distance between two groups

    - by user976856
    I would like to calculate distance between two groups. I am very confused. I have a two data sets. One is about a company and one is about employees. I would like to find out how their age( a company in which an employee is hired and an employee) are similar or not. I think I need to standarize also.. calcuate euclidean distance between each person and a company. (4-5 people in a company) calculate euclidean distance between each person and a company in industry level. My dataset is like this: person person_age company company_age insustry 1 50 1 5 1 2 40 1 5 1 3 30 2 1 1 4 20 2 1 1 5 25 3 8 2 Please help me. I don't mind using SAS or R. I am very confused.

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  • Need one login for two different sites

    - by Eric
    I am tasked to create a web site using Django. It will be a 'sister' site to an existing Plone site. The same Apache instance will be the front end to the sites which allows me to use the same domain name. However, the owners want the users to be able to log into one and still be logged into the other one. How can this be accomplished? Thanks! :)

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  • Java combine parents of two large inheritance chains

    - by Soylent Green
    I have two parent classes in a huge project, let's say ClassA and ClassB. Each class has many subclasses, which in turn have many subclasses, which in turn have many subclasses, etc. My task is to "marry" these two "families" so that both inherit from a SINGLE parent. I need to essentially make ClassA and ClassB one class (parent) to both of their combined subclasses (children). ClassA and ClassB both currently implement Serializable. I am currently trying to make both inheritance chains inherit from ClassA, and then copy all functions and data members from ClassB into ClassA. This is tedious, and I think a terrible solution. What would be the CORRECT way to solve this problem?

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  • how to import the attributes from one table to another in mysql

    - by user225269
    Is it possible to import the attributes of one table, then I put it into another table using a query in mysql? For example I have table1 with attributes lname, fname, mname And I want to put those attributes into table2. Is there any query that could do that? I'm imagining that the table2 has one attribute that could later be dropped so that it will be the same as table1.

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  • batch file to strip numbers from filename and pad to two digits

    - by ss2k
    I have a text file with a list of server names (servers.txt) that looks something like this: server1 server2 server3 I have a feeling this can be done with the FOR command as I use that to perform an action on each name in the file, but I'm not quite sure how to use the delimiters to accomplish this. for /F "tokens=*" %%G in (servers.txt) do ( SET machinenum = <magic here> ECHO %machinenum% ) expected output 01 02 03

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  • Multiple Session using port 1081 in one box using SSH

    - by regmaster
    Hi Guru's, I am setting Linux Hopping Station to another different servers. My current config to connect to another servers is using different port to connect. e.g ssh -D 1080 -p 22 [email protected] ssh -D 1081 -p 22 [email protected] Now what I would like to have to share the same port from the same box. ssh -D 1080 -p 22 [email protected] ssh -D 1080 -p 22 [email protected] But when I share it, I will get below error: bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 1080 Could not request local forwarding. How could I configure the same port? help. thank you. I want to share the same port because this is needed when configuring firewall in Citrix Firewall on other machine, not needed to many many ports and keep changing when changing connection. thank you.

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  • Folder redirect policy does not apply to one user

    - by Yoffe
    I'm running Windows Server 2008 R2, my station runs Windows 7. while defining folder redirection policy (and others) I find that the redirection does not apply (or appear) in rsop.msc checkout. First thing I've checked is restrictions on the folders where the My Documents folder will be redirected to, I have set full rights for my user on those folders (on the server), and yet I get no actual result. Eventually I decided to add my specific user to the scope under the Folder Redirection policy, and well - still nothing... Would love some clue about what can be wrong.

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  • Next Div Does not appear correctly after floating two divs to right and left

    - by user3703669
    I have floated two divs to left and right...But the next div after those two divs does not appear correctly... My code is follows #Div1{ position: relative; float: left; } #Div2{ position: relative; float: right; } And the display as follows <div id="Div1">This is aligned to left on the same x axis</div> <div id="Div2">This is aligned to right on the same x axis</div> <div style="color: red;">After the alignment this div does not align</div> The output is as follows http://i.stack.imgur.com/8A6hz.png But I expect something like this http://i.stack.imgur.com/wVGN6.png Anyway to accomplish this task ?? Please HELP!! Urgent help needed!!!

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  • Comparing two speech sounds

    - by JessicaB
    I need to be able to determine if two sounds are very similar. The goal is to have a very limited vocabulary (10 or 15) of short one or two syllable words, then compare a captured sound to determine if it is one of those items with all the usual variability in environmental and capture conditions. The idea is that the user can issue a few simple commands by voice instead of keyboard or mouse. Does anyone know the best approach to this? I don't want to do full blown speech recognition, just something much more limited.

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  • Update one list from another

    - by lacqui
    I have two multi-select lists in HTML - one of categories, and another of items. What I want is that, when an item selected in the "category" list, everything in the "items" list from that category is also selected. For example, if "Categories" contains "Animal", "Mineral", and "Vegetable", and "Items" contains "Dog", "Cat", "Monkey", "Diamond", "Granite", "Carrot", "Tomato": If "Animal" is selected in one list, "Dog", "Cat", and "Monkey" should be selected; any other selections should remain as they are. I'm using a Symfony PHP backend on the server, if that makes any difference

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