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• GNU Octave - question about graphs and plotting

  - by Twórca

  I've had task to do - to make an graphical interpretation of adding two functions together: sin(8x) and multiplied -sign(x) in Octave, as shown on image above. And I've done that, but I don't know how to get rid of these lines, which link up gaps between separated values (for example, -1 and 1). I don't want them to be seen especially in third graph. To make helping me easier, I'm going to tell you what I did: I made linear series of numbers, from -100 to 99 (tempx). tempy = -sign(tempx) y1 = [tempy tempy tempy tempy] (this line is kinda funny, if you know Polish language) Creating y2 - sinus function y3 = y2 + y1 Plotting, subplotting... Screenshot Awaiting for instructions...

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• Extension Manager in Visual Studio 2010

  One of the powerful aspect of Visual Studio is its ability to be extended and many people do that. You can find numerous extensions at the Visual Studio Gallery. The VSX team links to a 4-part blog series on how to create and share templates. You can also look find extension examples on the vsx code gallery.With Visual Studio 2010, you can search for items and install them directly from within Visual Studio's new Extension Manager. You launch it from the Tools menu:When the dialog comes up, be sure to explore the various actionable areas on the left and also note the search on the right. For example, I typed "MP" and it quickly filtered the list to show me the MPI Project Template:Others have written about this before me, just bing Extension Manager (and note that Beta2 introduced changes, some of which you can witness in the screenshot above). Comments about this post welcome at the original blog.

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• Group "Discussion" software?

  - by Kayle

  My client wants a "lite" forum... not unlike these stack exchange sites, but even a little lighter. There's a screenshot of the discussion group she likes most, below. You can also go here to see it for yourself it you like. I don't think traditional forum apps will display, functionally, in this manner. Is there any software I can use to get a similar result? A web service would be acceptable as well.

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• How to make "Chameleonic Ambiance Script" select a lighter hue for dark wallpapers?

  - by Nirmik

  I just started using an amazing script that makes the default "Ambiance" theme use that selected color. More details can be found Here I find this really amazing. But with my wallpaper being as shown below, the selection color, progress-bars color as after running the script are too dark (that can be seen in the following screenshot). I've learnt that what is done is the average color from the wallpaper is selected and then its tint is used (which is always a darker tint). So can I make this algorithm or whatever select a lighter tint of the average color?? Or can it be made to select the lightest color instead of the average color from the wallpaper??

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• Ubuntu 12.4 cursor changes

  - by mantic0

  I have a weird problem with my Ubuntu 12.4 dual screen setup (Toshiba laptop + one monitor). After a while the cursor on one screen completely changes its shape (not every time). I don't really know how to describe it because it's always something else. Sometimes I get four or five vertical lines instead of a cursor, sometimes I can only see part of the cursor, etc, sometimes weird shade appears. This only happens on one screen simultaneously. If I go to the other screen, the cursor appears to be fine but when I change screens, the cursor changes. I tried to do a screenshot but when I do, the cursor looks just fine. I'm using Unity and Gnome 3 but the problem is on both desktop environments. Nothing is wrong with my screen though because I'm also using Windows and I don't have any problems there.

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• Keep getting messages about internal system errors

  - by Tomas Lycken

  I keep getting popups about internal system errors (see screenshot below) on irregular intervals (several times a day), that I don't know what to do about. If I continue through the dialog and try to report the error back to the Ubuntu project, I get a message stating that development on this version of Ubuntu has been completed, and that I should ask for help here if I don't know what to do about it. I don't. If I show the details of the error message, the "executable path" parameter shows /usr/share/apport/apport-gpu-error-intel.py. Is this a bug I should report to Launchpad, or just a configuration error somewhere? If it's a bug, how do I collect the data I (and the devs) need? Update in response to comment: I am running an ASUS N53SN, sporting an Intel Core i7 2630QM CPU and an NVidia GeForce 550M GPU.

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• Icons missing from launcher, system settings, folders

  - by Giannis Rizos

  Various icons from launcher are missing. The first one is from Home folder menu the second from Terminal the last one from Desktop Switcher. This happened after I upgraded to 11.10 from 11.04. I have created a New (Untitled Folder) folder in my desktop and the icon is missing too. The same occurs in System Settings menu too. Some icons like Appearance, Keyboard Layout are missing too. Sorry but I can't post a screenshot due to my reputation. Any suggestions?

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• how does server communication work in a flash game with a php backend

  - by Tim Rogers

  I am trying to create a browser game using actionscript/flash. Currently, I'm trying to understand how I would go about creating a back-end which interfaced with my MySQL database. As far as I understand, If I create a php file on a webserver called test.php and then navigate to a webpage hosted on the server eg. www.example.com/test, the php script will run and display the result in my browser. This would use http. Is this how communication between client and server usually works in a flash game? for example, if the game needed to query the db. Would actionscript have to essentially invoke the url of the php script that would execute the query? it could then parse the data and use it. If this is the case, then is JSON considered a good way to transfer data over http?

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• Good sites for sharing code snippets & pastes that you can share links to?

  - by acidzombie24

  I know there are site tools to check if your webpage is alive, has compression, etc but lets not get into that. What are useful sites to paste code in and to share links to it? The three i know are http://codepad.org/ shows source and runs code online http://www.pastie.org/ share source with syntax highlighting http://jsfiddle.net/ great for JS help or for the occasional test. What else do you know of? One answer per question. I'll let lints and validators slide since you do paste code into them. Mention a weakness if you do know one so others wont be surprised or disappointed.

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• After upgrading to 13.04 Unity interface is not showing

  - by ?????? ?????

  I've upgraded to Raring last night. The upgrade itself went okay, no errors. But when I rebooted the computer afterwards and logged in to my Unity session, all I could see was the Desktop background (together with Desktop icons), and no Unity interface. The Super button shortcut wasn't showing the Dash, there was no top panel etc. Please see the screenshot. As a hint, I'm suspecting it's got something to do with my switchable graphics. I'm running Ubuntu on Acer Aspire AS5830TG with nVidia GT540M and an Intel integrated card. In 12.10 I was using Bumblebee to manage the graphic card switching. During the upgrade I saw something related to nvidia had to be uninstalled, but didn't pay much attention to it. I can't be sure if it has anything to do with my problem though. What could possibly go wrong?

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• How do I change the volume control icon?

  - by Richard Oren Pincook

  I recently switched to gnome 3 (love it!), but the default icon theme was a little dreary and gray, so I switched that back to ubuntu-mono-dark. But now whenever I change my volume, I get this ugly pixelated icon show up. The forum says I don't have enough reputation to post an screenshot, but it's pixelated and ugly with these fuzzy straight blue lines that turn on as the volume goes up. I found identical images in the Humanity and Humanity-Dark icon themes (one example: /usr/share/icons/Humanity/status/24/audio-volume-high.png). I tinkered with the images by changing their names, temporarily deleting them, etc. But it had no effect on the ugly icon. What file is responsible for violating the beauty of my desktop?! Once I find it, I can replace it.

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• How do I disable the new invisible border feature (ruins Compiz' Grid plugin)?

  - by Ike

  A new feature was added recently that adds an invisible border around the windows to grab for resizing (although i thought the new resize grip solved any big issues). This annoys me because it destroys the usefulness of the grid plugin of compiz.. i'm not sure if the border is part of compiz or gnome, but i'd like to know how to disable it. i couldn't find any options in ccsm or the window settings in gnome. See the screenshot to see how much waste is caused. These windows should match up instead of having blank space surrounding all of them.

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• Unity displays a black screen when connecting an external monitor

  - by Bragboy

  I upgraded my ubuntu from 10.10 to 11.04 and since that day I have been facing issues with Dual Monitor in Ubuntu. When I connect my second monitor during boot time, everything works fine. But when I use my laptop and try to connect a monitor when I am running Ubuntu, I face a weird black screen issue. To see what I mean, following is a screenshot of the same. Here are the problems that happen Desktop background goes away As you can see on the left hand side of the desktop, the right and top portions are black The usual buttons - power button, mail, volumne etc., on the top panel do not work as expected Plus it suddenly crashses at times. And a lot of n other issues associated with this. Is there any patch/release that has happened for these bugs or should I report it anywhere? Help needed.

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• Is it possible to allow the user to access the 'Volumes' without asking the Administrator's password?

  - by Tom

  Am the administrator of my Ubuntu system. Recently I added a new user account. But when ever the user tries to access or open the 'Volumes'(Drives where movies, songs and other files are stored) it asks for the Administrator's password. I created the user account to my other family members and I don't want to tell them my password. So is it possible to allow them to access the Volumes without asking Administrator's password ? UPDATE : Ubuntu was installed alongside Windows in my system. I will provide a screenshot of the Volume details -

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• Resize content for "frame" on .aspx page which draws product content from suppliers' page

  - by zenbike

  I have a retail store site, no online sales, which displays the webpage of our supplier in a "frame" in order to have the most accurate and up to date information for our customers. (example) My issue is that the size of the page it is pulling in doesn't fit in the frame. It looks pretty poor, and part of the content is obscured. Is there a way to scale the content drawn in to the size of the frame? The same site also has an intermittent issue with the Flash banner loading. When it doesn't load, the layout of the header on the page is awful. Any ideas there will also be appreciated.

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• Icon zoom on gnome panel with mouseover?

  - by brent.with.a.mustache

  I'm actually quite surprised that I couldn't find any information regarding this question through simple google-ing; I would think that it was something of a no-brainer kind of question. I'm basically trying to figure out if there's any way to have the icons in the side panel/favorites bar magnify as you mouseover them, much like you'd see in any the popular launcher programs (i.e. rocket dock or apple's launcher)? I'm on a netbook with a rather limited amount of screen real estate to work with, so the icons depicting my "favorite applications" have been reduced to a permanent, unsatisfying handful of pixels. Again, it seems to me that this should be a fairly obvious feature to include in the options for the panel, so I'm hoping that there's an easy solution. Unfortunately, I haven't found any way to make this happen, so any help would be appreciated. Here's a screenshot :squint: http://i.imgur.com/OpMIF.jpg -- ubuntu 11.10; gnome 3; hp mini 110

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• How to debug a server that crashes once in a few days?

  - by Nir

  One of my servers crashes once in a few days. It does low traffic static web serving + low trafic dynamic web serving (PHP, local MYSQL with small data, APC, MEMCACHE) + some background jobs like XML file processing. The only clue I have is that a few hours before the server dies it starts swapping (see screenshot http://awesomescreenshot.com/075xmd24 ) The server has a lot of free memory. Server details: Ubuntu 11.10 oneiric i386 scalarizr (0.7.185) python 2.7.2, chef 0.10.8, mysql 5.1.58, apache 2.2.20, php 5.3.6, memcached 1.4.7 Amazon EC2 (us-west-1) How can I detect the reason for the server crashes ? When it crashes its no longer accessible from the outside world.

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• Wheres my memory going?

  - by Stu2000

  My machine keeps 'freezing' before eventaully logging out with all the programs exiting. This is rather annoying, and I think its because I keep running out of memory. I am not running any custom software, just netbeans, chrome etc. (Stuff I usually run on other ubuntu computers without issue). For some reason my memory usage is through the roof as seen here, but I can't quite figure out why. Here is a screenshot which may be useful with htop and gnome-system monitor open as user and as root. I notice that my console-kit-daemon is taking up about a gig of 'virtual memory'. Is that normal? Any tips/advice will be helpful. In the meantime I have ordered 2 x 4 gig ram sticks to try and just throw hardware at the issue.

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• How to make Firefox windows style less space consuming?

  - by chocobai

  Firefox takes up so much space on small screens, so I'm searching for solutions that make firefox' interface less space consuming on ubuntu 12.04 with gnome3. Good examples are the chromium-style, but chromium is kind of slow in gnome3. Chromium does it, firefox on osx does it. Is this also possible on ubuntu via a custom modification or something? Here a screenshot of what I am thinking about: Firefox on OSX: https://wiki.mozilla.org/images/5/50/Firefox-4-Mockup-i06-%28OSX%29-%28TabsTop%29-%28Persona%29.png Thanks for your help.

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• What is the best way to pass data into an API from a website?

  - by Chris Wakoksi

  My main objective is to create a User Interface in order to provision(change the status: activate, deactivate, or suspend) modems. I have received a SOAP developer's guide to the specific type of modem that helps out with the specific values that I need to pass into Iridium's WSDL but I cannot figure out how to do this from a webpage I have created using HTML/CSS, and PHP? I have been told by others that I need to know the portal. I have no idea what that means. I am a beginner programmer who has learned programming for this project. Any suggestions as to how to pass my data into the provisioning API?

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• What is the name for landing pages that are one long page?

  - by blunders

  Really don't see them much anymore, but here's an example of what I mean: From comments: These are "high pressure" sales pages, design to overload the user with information, sell them on the belief that what they're buying is what they need, normally have a lot of testimonials, highlighted text, etc. The pages I'm talking about are not user friendly, they're aggressive sales pitches designed to target users wanting to belief the webpage they just landed on will solve there problems for an "affordable" price. Here's an example: www_landingpagecashmachine_com (remove the underscores, since I'm attempting to avoid linking to a site like that...) Bonus points: if you're able to tell me the name of the guy/company that popularized these types of pages; recall hearing about his company years ago, after he died in a crash while racing on a track with his Ferrari club on the west coast of the US. (Update: Appears Corey Rudl was the guy's name, and his company was called "The Internet Marketing Center." Even with that info, I've still been unable to find the name for these type of pages.)

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• The Internet from a 1990s Point of View [Video]

  - by Asian Angel

  Are you ready for a retro look at the Internet? Then prepare to journey back in time to 1995 with this video and its view of the early days of the Internet. From YouTube: Trine Gallegos hosts this segment shot in 1995 when the Internet was first becoming an icon. This is an interesting look back at how clunky the applications were. I don’t even think they were using a computer mouse yet. Internet – from the 1990′s point of view [via Fail Desk] How to Own Your Own Website (Even If You Can’t Build One) Pt 1 What’s the Difference Between Sleep and Hibernate in Windows? Screenshot Tour: XBMC 11 Eden Rocks Improved iOS Support, AirPlay, and Even a Custom XBMC OS

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• Multiple Document Interfaces in Visual Basic

  What is Multiple Document Interface (MDI)? In most VB.NET applications, it is using a single document interface (SDI). In this type of interface, every window is unique to aother window. But in multiple document interface, it works by having one parent window with child windows under it. See the screenshot below: As you can see, there is one parent window (in gray color) and there are 3 child windows (in blue, violet and orange color). You can have more than 3 child windows depending on your application requirements. But you can only have one parent window. Depending on the design of your MDI...

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• BDD: Getting started

  - by thom

  I'm starting with BDD and this is my story: Feature: Months and days to days In order to see months and days as days As a date conversion fan I need a webpage where users can enter days and months and convert them to days. I have some doubts ... Should I write my scenarios before coding anything or should I first write a scenario and then write code, write a scenario again and then write code, and so on ... ? If I should write my scenarios before, can my steps be approved and production code still does not get done? When should I do refactoring on my code? After the feature is done or after each scenario implementation?

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• Menu bars are a basic light gray after installing graphics card driver. [closed]

  - by Jonathan

  Possible Duplicate: Desktop forgets theme? Hi, I've just installed Ubuntu 10.10 64-bit. It came up saying I could install 2 proprietary drivers, one for my WiFi adapter (which works perfectly) and one for my graphics card - a Sapphire AIT Radeon HD 5770 1024MB GDDR5 PCI-Express Graphics Card. The driver is called ATI/AMD proprietary FGLRX graphics driver. Before installing this driver I was unable to have Extra Visual Effects in Appearances. However after installing (and restarting) the menu bars are now in a basic light gray mode, rather than the sleek Ubuntu black. - Although Extra Visual Effects does now work. I've tried rebooting, and I've had a look around in ATI "Catalyst Control Center" but nothing has worked so far. Does anybody know what this windows mode is, how to change it back to normal and why it's doing it in the first place? Below is a screenshot of my computer: (This is also the first time I've installed Ubuntu on my computer, and am keen for it to work.)

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