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  • 3D plotting in Matlab

    - by Jill
    I'm using the subplot and then surf functions to generate images in 3D in Matlab. How do I get rid of the axes and axis' gridlines and change the color to all yellow or all green or something like that? Thanks.

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  • Shall the website switches language based on IP address or browser language?

    - by SuperRomia
    Geo-location has been using most by Websites to redirection, but I have found that several IP addresses locate a country which has using several languages. Meantime, some users prefer to using the language setup in their system. For example, a person from United States goes to Japan and using the Internet connection from there to surf Website, but the Website redirects him to Japanese language. So, shall I giving the web user choice to select the language detect on their browser or force them to the website detected by IP address?

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  • how to animate 2 surfaces in Matlab?

    - by Kate
    Hi everyone, I've written this code which makes an animation of 2 ellipsoids. Parameter k1 of these ellipsoids must depend on time (so they'd move asynchronously), but I need to animate them in one figure. Can I use loop for it or is it better to use timer & some kind of callback functions? The second problem - I need to move inner ellipsoid so they would have one common side. How can I do this? a=5; b=a; c=10; u = (0:0.05*pi:2*pi)'; v = [0:0.05*pi:2*pi]; X = a*sin(u)*cos(v); Y = a*sin(u)*sin(v); Z = c*cos(u)*ones(size(v)); Z(Z0)=0; % cut upper V1=4/3*pi*a*b*c; d=1/2; e=2^d; a2=a/e; b2=a/e; c2=c; V2=4/3*pi*a2*b2*c2; X2 = a2*sin(u)*cos(v);%-2.5; Y2 = b2*sin(u)*sin(v); Z2 = c2*cos(u)*ones(size(v));%+0.25; Z2(Z20)=0; % cut h=1/3; for j = 1:20 k1=(sin(pi*j/20)+0.5)^h; a=a*k1; c=c*k1; X = a*sin(u)*cos(v); Y = a*sin(u)*sin(v); Z = c*cos(u)*ones(size(v)); Z(Z0)=0; a2=a2*k1; b2=a2*k1; c2=c2*k1; X2 = a2*sin(u)*cos(v)+5;%-2.5; Y2 = b2*sin(u)*sin(v); Z2 = c2*cos(u)*ones(size(v));%+0.25; Z2(Z20)=0; hS1=surf(X,Y,Z); alpha(.11) hold on hS2=surf(X2,Y2,Z2); hold off axis([-20 20 -20 20 -20 20]); F(j) = getframe; end movie(F,4)

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  • Evaluating and graphing functions in Matlab

    - by thiol3
    New to programming, I am trying to graph the following Gaussian function in Matlab (should graph in 3 dimensions) but am making some mistakes somewhere. What is wrong? sigma = 1 for i = 1:20 for j = 1:20 z(i,j) = (1/(2*pi*sigma^2))*exp(-(i^2+j^2)/(2*sigma^2)); end end surf(z)

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  • Special functions in Matlab

    - by favala
    I'm trying to get a picture like the following: http://upload.wikimedia.org/wikipedia/en/e/e6/Airy-3d.svg What am I doing wrong? [x,y]=meshgrid(-1:.1:1,-1:.1:1); surf(x,y,(2*besselj(1,2*pi*sqrt(x.^2+ y.^2)/sqrt(x.^2+ y.^2)).^2) Also... kind of a side note, but if I used ndgrid instead of meshgrid here my x's and y's would switch right?

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  • Generating a twitter OAuth access key - the semi-manual way

    - by Piet
    [UPDATE] Apparently someone at Twitter was listening, or I’m going senile/blind. Let’s call it a combination of both. Instead of following all the steps below, you could just login with the Twitter account you want to use on http://dev.twitter.com, register your application and then click ‘Edit Details’ on the application overview page at http://dev.twitter.com/apps. Next click the ‘Application detail’ button on the right, followed by the ‘My Access Token’ button in order to get your Access Token and Access Token Secret. This makes the old post below rather obsolete. Clearly a case of me thinking everything is a nail and ruby is a hammer (don’t they usually say this about java coders?) [ORIGINAL POST] OAuth is great! OAuth allows your application to use your user’s data without the need to ask for their password. So Twitter made the API much safer for their and your users. Hurray! Free pizza for everyone! Unless of course you’re using the Twitter API for your own needs like running your own bot and don’t need access to other user’s data. In such cases a simple username/password combination is more than enough. I can understand however that the Twitter guys don’t really care that much about these exceptions(?). Most such uses for the API are probably rather spammy in nature. !!! If you have a twitter app that uses the API to access external user’s data: look for another solution. This solution is ONLY meant when you ONLY need access to your own account(s) through the API. Other Solutions Mr Dallas Devries posted a solution here which involves requesting and scraping a one-time PIN. But: I like to minimize the amount of calls I make to twitter’s API or pages to lessen my chances of meeting the fail whale. Also, as soon as the pin isn’t included in a div called ‘oauth_pin’ anymore, this will fail. However, mr Devries’ post was a starting point for my solution, so I’m much obliged to him posting his findings. Authenticating with the Twitter API: old vs new Acessing The Twitter API the old way: require ‘twitter’ httpauth = Twitter::HTTPAuth.new('my_account','my_secret_password') client = Twitter::Base.new(httpauth) client.update(‘Hurray!’) The OAuth way: require 'twitter' oauth = Twitter::OAuth.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY') oauth.authorize_from_access('123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis', 'fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh') client = Twitter::Base.new(oauth) client.update(‘Hurray!’) In the above case, ve4whatafuzzksaMQKjoI is the ‘consumer key’ (sometimes also referred to as ‘consumer token’) and KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY is the ‘consumer secret’. You’ll get these from Twitter when you register your app. 123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis is the ‘access token’ and fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh is the ‘access secret’. This combination gives the registered application access to your account. I’ll show you how to obtain these by following the steps below. (Basically you’ll need a bunch of keys and you’ll have to jump a bit through hoops to obtain them for your server/bot. ) How to get these keys 1. Surf to the twitter apps registration page go to http://dev.twitter.com/apps to register your app. Login with your twitter account. 2. Register your application Enter something for Application name, Description, website,… as I said: they make you jump through hoops. If you plan on using the API to post tweets, Your application name and website will be used in the ‘5 minutes ago via…’ line below your tweet. You could use the this to point to a page with info about your bot, or maybe it’s useful for SEO purposes. For application type I choose ‘browser’ and entered http://www.hadermann.be/callback as a ‘Callback URL’. This url returns a 404 error, which is ideal because after giving our account access to our ‘application’ (step 6), it will redirect to this url with an ‘oauth_token’ and ‘oauth_verifier’ in the url. We need to get these from the url. It doesn’t really matter what you enter here though, you could leave it blank because you need to explicitely specify it when generating a request token. You probably want read&write access so set this at ‘Default Access type’. 3. Get your consumer key and consumer secret On the next page, copy/paste your ‘consumer key’ and ‘consumer secret’. You’ll need these later on. You also need these as part of the authentication in your script later on: oauth = Twitter::OAuth.new([consumer key], [consumer secret]) 4. Obtain your request token run the following in IRB to obtain your ‘request token’ Replace my fake consumer key and consumer secret with the one you obtained in step 3. And use something else instead http://www.hadermann.be/callback: although this will only give a 404, you shouldn’t trust me. irb(main):001:0> require 'oauth' irb(main):002:0> c = OAuth::Consumer.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY', {:site => 'http://twitter.com'}) irb(main):003:0> request_token = c.get_request_token(:oauth_callback => 'http://www.hadermann.be/callback') irb(main):004:0> request_token.token => "UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1" This (UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1) is the request token: Copy/paste this token, you will need this next. 5. Authorize your application surf to https://api.twitter.com/oauth/authorize?oauth_token=[the above token], for example: https://api.twitter.com/oauth/authorize?oauth_token=UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1 This will bring you to the ‘An application would like to connect to your account’- screen on Twitter where you can grant access to the app you just registered. If you aren’t still logged in, you need to login first. Click ‘Allow’. Unless you don’t trust yourself. 6. Get your oauth_verifier from the redirected url Your browser will be redirected to your callback url, with an oauth_token and oauth_verifier parameter appended. You’ll need the oauth_verifier. In my case the browser redirected to: http://www.hadermann.be/callback?oauth_token=UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1&oauth_verifier=waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag Which returned a 404, giving me the chance to copy/paste my oauth_verifier: waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag 7. Request an access token Back to irb, use the oauth_verifier to request an access token, as follows: irb(main):005:0> at = request_token.get_access_token(:oauth_verifier => 'waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag') irb(main):006:0> at.params[:oauth_token] => "123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis" irb(main):007:0> at.params[:oauth_token_secret] => "fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh" We’re there! 123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis is the access token. fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh is the access secret. Try it! Try the following to post an update: require 'twitter' oauth = Twitter::OAuth.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY') oauth.authorize_from_access('123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis', 'fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh') client = Twitter::Base.new(oauth) client.update(‘Cowabunga!’) Now you can go to your twitter page and delete the tweet if you want to.

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  • How to connect to a SOCKS Proxy from an iPhone/iPod Touch?

    - by GeneQ
    I like to surf securely and privately via a SOCKS proxy which I created via SSH tunneling, on the Mac. I used the SSH client on my Mac to achieve this. Then I thought, since the iPhone OS is essentially Mac OS, the same trick might work also on the iPhone. I managed to create a SSh tunnel on my iPhone via the Terminal (iPhone's Terminal). (Yes, it's jail-broken) ssh -D [port] [email protected] At this stage my iPhone is SOCKS proxy. However, there doesn't seem to be a way in the iPhone networking preference panel to specify a SOCKS proxy. Someone suggest creating a Proxy Auto-Contig (PAC) file to workaround this, but that sounds complicated. Any ideas how to make iPhone use it's own SOCKS proxy?

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  • BSOD error on Win7 ultimate

    - by jim
    BUG CHECK STRING = DRIVER_POWER_STATE_FAILURE BUG CHECK CODE = 0x0000009f PARAMETER 1 = 0x00000003 PARAMETER 2 = 0x85f05420 PARAMETER 3 = 0x82962ae0 PARAMETER 4 = 0x85aa2ab8 CAUSED BY DRIVER = ntkrnlpa.exe CAUSED BY ADDRESS = ntkrnlpa.exe+dcd10 FILE DESCRIPTION = NT Kernel & System Microsoft® Windows® Operating System Microsoft Corporation 6.1.7600.16385 (win7_rtm.090713-1255) 32-bit C:\Windows\minidump\111109-22198-01.dmp This is the BSOD mini dump that I have been getting recently. I was wondering if anyone had any ideas what would cause this. I just did a clean install of win7 ultimate 32 bit. I don't do a lot with this pc. Mostly surf the web and that's when it happens. My only guess is that the power supply is failing and I need a new one. I wanted to check here and see if anyone else had some other idea before I bought a new one. Thank you for any help you can give me.

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  • Delayed startup of network icon (wi-fi)

    - by Michael Dy
    When my Windows 7 Starter netbook boots up and after everything is loaded, it takes about five minutes before the network icon near the clock becomes functional. When there's an available wi-fi signal (which automatically connects to my netbook as preconfigured) after the boot, my netbook seamlessly connects to it even if the network icon cannot be clicked or accessed. (The icon is shown to be loading for about five minutes.) During this time, when I go to Network and Sharing Center, it takes the same time to load. So even while the icon and the Center cannot be accessed, I can surf the Internet. When my netbook was still new, it didn't have this issue. How do I fix this?

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  • Restrict VPN user to Remote Desktop only with Sonicwall

    - by Matt
    Basically I want him to only be able to log onto the VPN in order to use Remote Desktop to use HIS machine. Not surf the internet or do anything like that, but just use the programs on his machine that he doesn't have at home. We use a Sonicwall NSA 220 with their regular VPN client. I can create a user for him, but when I create an access rule it applies to all VPN users. How can I make something like that only apply to ONE user?

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  • How can I stop new Command Prompt windows spawned by another program from covering my foreground win

    - by Chris W. Rea
    Under Windows 7 x64, when I'm ripping CDs with Exact Audio Copy, it spawns a Command Prompt window each time it invokes the external MP3 compression program I use, LAME. While that's going on, I usually like to surf the web. However, I find it quite annoying that even when Firefox has the foreground, the Command Prompt windows spawned by EAC are coming up in the foreground, on top of my Firefox window. Is there a way to make those new Command Prompt windows spawn in the background? Alternatively, is there a way to make the current active window stay in the foreground / on top while I'm using it?

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  • What to do if I can't ping my DNS?

    - by Moshe Lewin
    On my Windows XP SP3 machine I can only browse (with any browser) by putting in an ip address. If I put in any domain name it doesn't work. Skype and IM work. In command prompt nslookup works to resolve the name to an ip address, but ping does not work using a domain name, only using the ip address. Other computers on the same network can surf the net normally without any problems. I am not using a proxy. I already reset winsock and tcpip stack to no avail. Can anyone help me solve the problem?

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  • Window Servers 2003 Security After Support Lifecycle

    - by Daniel Fukuda
    Hello, I wanted to ask if let's say that Microsoft has stopped supporting Windows Server 2003 now so there is no any security updates and I use that system for Domain Controller (Windows XP/7 Professional Clients) and File Server only + I'm using ESET NOD23 AntiVirus. Will my system be secure? I'm asking because I don't surf internet on that system nor I will install/open any programs/documents and that server is connected to router without any open ports. "On July 14, 2015, all Windows 2003 support, including security updates and security-related hotfixes, will be terminated."

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  • How not to send all traffic over SBS connection?

    - by Niels R.
    Hi, My girlfriend uses SBS Connection Manager to connect to her company's network. The problem is that the internet connection is überslow at work, so she wants to use the home internet connection to surf the web and use the SBS Connection to get to her work stuff. Normally with a VPN connection you just have to uncheck a box "Send all traffic over VPN connection" or "Use VPN as default gateway" or something like that. As I've never seen this SBS Connection Manager-thing before, I've no idea where to uncheck a similar box. (I've checked the properties of the connection in Network Connections, but it only has a few options about logging and firewall). Thanks for any help in advance! Kind regards, Niels R.

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  • How can I permanently fix my date synchronize problem in linux?

    - by gr33d
    Ubuntu 7.10 server i386 clock/date/time won't stay in sync. Are their log files I can view to tell when the clock changes? For a temporary fix, I created a file in /etc/cron.hourly: #!/bin/sh ntpdate time.nist.gov However, this still leaves a potential hour of unchecked time. Is there a cron.minutely? That would still leave a potential minute of unchecked time. I have read about CMOS battery problems, but what if this does not fix it? I'd like to be able to troubleshoot this as a completely software problem. My squid logs are showing dates back in 2005 when the clock changes, and my time-sensitive access controls are skewed and end up allowing users to surf prohibited websites during business hours.

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  • How to create a user account for a child in Linux Mint?

    - by zenstealth
    Recently I have renovated an old computer which once belonged to my dad (the old HDD crashed, and I just bought a new one to replace it). My parents want me to fix this computer for my 5-year-old sister to use. I decided to use Linux Mint as the OS because everything (flash, mp3, etc.) is already configured. How do I create a user account in Linux Mint with limited access for my sister, so that it won't mess up the entire system? All she does is surf the web, so I'm just worried that she might accidentally mess up a system setting that I eventually will have to fix it.

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  • Chromium always starts as floating in awesome.wm

    - by xhochy
    I'm using awesome as window manager for a small surf&info terminal. Chromium is started directly after login on the first workspace and should be displayed fullscreen. I've set the layout of all workspaces to awful.layout.suit.max and followed Awesome FAQ so that Chromium and all other (automatically) started programs will be shown on the right workspace. All programs except Chromium will start correctly in fullscreen mode. I tried { rule = { class = "chromium-browser" }, properties = {floating = false, tag = tags[1][1]}} and { rule = { class = "chromium-browser" }, properties = {tag = tags[1][1]}} but Chromium will always start in floating mode. This is a bit annoying as you still see awesome's panel at the top.

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  • MAC address stealing?

    - by Arnis L.
    Recently my i-connection started to get laggy. Sometimes it disappears completely. ISP told me that someone steals my internet. Someone has managed to sniff my MAC address, kick me out and surf web in my place. So... I'm curious - how it's possible to steal MAC address and what makes that mystical thief to be more privileged that when he uses i-net I lose mine? Or my ISP just lies to me? P.s. It's not wifi.

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  • Web connection speed issue

    - by Iroll750
    I encounter a strange issue with my web (wireless) connection on my laptop (Ubuntu 11.10) I'm able to have 540kbps (down) on all computers in my house (including laptop at the same distance from the box) except me. When i do a speed connection test, i can have this optimal speed immediately after booting. As i surf on the net, watching videos, download things, etc... it becomes slower progressively until 100-110 kbps and the speed remain the same until i reboot. I tried to figure out if a process consume bandwith in background with nethogs but i found nothing suspicious. Any ideas ? Thanks in advance for your help !!

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  • something is downloading in background Linux

    - by wisdom
    My laptop boots normally to Linux -LinuxMint- and immediately I like to open gnome-system-monitor but the shock is that something is downloading(the problem has been out 2 days ago) and nothing I run yet ! I did iftop in terminal but nothing strange -a screen shot provided-, also I tried nethogs which showed nothing at all. The more complicated when I reboot and same problem is there so I can't browse/surf Internet, no one connected to my network can browse any more it's absorbing the stream horribly! After many reboots it will go to normal state(no background downloading). But really I can't figure out the problem going behind the scene ! Any suggestion,any help would be appreciated...thanks

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  • Wordpress redirects to itself endlessly

    - by iTayb
    I've just upgraded to last version (2.9.1) from kinda late version (2.2.1). After the upgrade I've realized that you cannot access wordpress from my .com domain, however it is possible via other subdomain! db-he.110mb.com works fine while http://www.db-he.com doesn't. That both redirect to the same server, and configurations are fine. However you cannot surf index.php (which is wordpress'). www.db-he.com/index.php is doing a permanent redirect to www.db-he.com/index.php for some reason. Problem is with wordpress only. All other files works fine. For example, changes.txt can be accessed from both links: www.db-he.com/changes.txt db-he.110mb.com/changes.txt For some reason, it seems more a server problem than a wordpress problem. What can I do?

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  • How to troubleshoot ping request time out

    - by user28317
    I have a Windows 7 and an XP machine connected to a NETGEAR wireless router. Both machines can log into the network and surf the web. Both are connecting wirelessly. I can ping the router from each machine and get a reply. I can ping each machine from the router and get a reply. But i cannot ping each machine from the other; getting a request time out. Subnet IP Addresses are 192.168.1.* Router =1; Win7 = 10; XP = 11; Firewall is currently off in both systems. Since i can ping from router im picking that not the problem anyway. If i try to ping from xp to win7 i get Request Timed Out. If i try to ping from Win7 to Xp i get destination host unreachable. What should i do now? Thanks

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  • Network connectivity issues with Windows Store

    - by Duy Tran
    I have my Windows 8 Pro build 9200 installed on my Dell laptop. I want to install some new apps and updates from the Store but there might be some network problem that caused the downloading gauge showing up but not really running at all. I followed some instructions that switched from local user to my Microsoft account, but this "Please wait" screen keeps showing and I don't really know why. I still have internet access and can use some apps like People, Mail, etc. with my account logged in, I can surf the net using Firefox, Chrome and Internet Explorer. I did another test using cmd with ping -t google.com and it showed that my laptop has internet access. Anybody knows a solution to make the Store working properly? Or is there any workaround to switch to the Microsoft account instead of a local user account?

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  • How to troubleshoot ping request time out [closed]

    - by user28317
    I have a Windows 7 and an XP machine connected to a NETGEAR wireless router. Both machines can log into the network and surf the web. Both are connecting wirelessly. I can ping the router from each machine and get a reply. I can ping each machine from the router and get a reply. But i cannot ping each machine from the other; getting a request time out. Subnet IP Addresses are 192.168.1.* Router =1; Win7 = 10; XP = 11; Firewall is currently off in both systems. Since i can ping from router im picking that not the problem anyway. If i try to ping from xp to win7 i get Request Timed Out. If i try to ping from Win7 to Xp i get destination host unreachable. What should i do now? Thanks

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  • Looking for internet traffic manager software for Windows 7

    - by Semyon Perepelitsa
    I have 128 KB/s (1 Mbit/s) internet connection. Not quite fast for downloading big files, but it is okay for internet browsing. When I start big file dowload, I cannot surf the web normally: pages appears slowly, especially pictures there. Therefore I pause downloading, but I'm regularly spending much time on reading articles or leaving the computer alone, when I can allow the file being dowloaded. Is there any software that can automize the process of pausing and resuming download or simply automatically regulate internet speed for each application using Internet? I download files using different software and protocols (Download Master for http, ftp; uTorrent for torrents; many other programs for updating themselves), so I don't want to be tied to particular program for downloading.

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