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  • jquery creating stacked bar chart with flot?

    - by KittyYoung
    I'm using jquery flot and I'm trying to create a stacked bar chart, but I'm having some syntax issues... I'll post my code at the end of this, but I'm quite certain it's wrong. I do get a stacked bar chart, but there's only three columns... Basically, here is the data that I'm working with and what I want to accomplish... The first group (Focus Group 1) on each line is the bottom bar of the stacked bar, the second group (Focus Group 2) is the second, and the third group (Focus Group 3) is the top group. The "Responses" are what I want to use on the x-axis, the first number in each set is x, and the second number is y. Response1, [0, 0], [0,0], [0,9] Response2, [1, 5], [1,5], [1,11] Response3, [2, 2], [2,0], [2,8] Response4, [3, 1], [3,2], [3,6] Response5, [4, 0], [4,0], [4,7] I should also mention, that I'm not sure if a stacked chart is the best way to go... Admittedly, I'm not a very visual person, and generally find charts annoying... If there's a better way to present this data, then I am so totally open to suggestions... Essentially... I have a series of questions. Each of these questions were presented to three focus groups. Members of the focus groups selected a response. I'm trying to present the count per response, per focus group, for each question. I thought that a stacked chart would be the best way to go, but again, I'm open to other ways of doing this. The only thing is, I definitely need a visual representation of the data....

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  • Agile sysadmin and devops - How to accomplish?

    - by Marco Ramos
    Nowadays, agile systems adminitration and devops are some of the most trending topics regarding systems administration and operations. Both these concepts are mainly focused on bridging the gap between operations/sysadmins and the projects (developers, business, etc). Even if you never heard of the devops concept, I'm sure that this topic is your concern too. So, what tools and techniques do you use to accomplish devops in you companies? I'm particularly interested in topics like change management, continous integration and automatization, but not only. Please share your thoughts. I'm looking forward to read your answers/opinions :)

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  • What advantages does mod_evasive have over mod_security2 in terms of DDOS protection?

    - by Martynas Sušinskas
    Good day, I'm running an Apache2 server in front of a Tomcat and I need to implement a DDOS protection mechanism on the Apache2 layer. I have two candidates: mod_evasive and mod_security2 with the OWASP core rule set. Mod_security is already installed for overall protection, but the question is: is it worth adding mod_evasive besides mod_security just for the DDOS (does it have any major advantages) or the OWASP crs rules in the /experimental_rules/ directory (modsecurity_crs_11_dos_protection.conf) provide the same protection? Or it's just a matter of preference? The sites are not very high traffic normally. Thank you for your answers, Martynas

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  • Engineers are using explosives to remove hard rock outside our office building. What countermeasures should we take?

    - by Karrax
    Our building is located approx. 100 meters from the explosive charges. They happen several times per day, and really shake the entire building a lot. This is going to go on for many days and the blasts are supposed to get stronger. Our server rooms are nothing fancy; one of them has all the racks on hard concrete while the other one has a raised floor (the one which allows the cables to go beneath it). Does anyone have any tips, countermeasures or best practices for us? Currently we are thinking of the following countermeasures: Daily report of the server rooms status lights (HD lights, power supplies and so on). Nightly check disk scan on the most important servers Order in extra supply of spare harddrives Edit: Many good answers here! However one needs to be accepted. The highest voted answer at the time of this edit will get their answer accepted.

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  • Create a playlist in iTunes based on a hard drive folder

    - by Electrons_Ahoy
    I'd like to be able to base playlists in iTunes on a folder on my hard drive. For example, say I have this directory structure: C:\MP3s\Doctor Who Music C:\MP3s\Star Wars Music Importing all those MP3s into iTunes is really simple - at the bare bones version you can just drag the MP3 folder into the iTunes window and it does the rest. But, having done that, what I'd like to be able to do is point iTunes at each of those directories and have it turn them into their own playlists, so I end up with a Doctor Who Music and a Star Wars Music playlist based on the MP3s locations on the hard drive. Does iTunes have a way to do this, or is there a way to trick it into this with some other program? (I'm on Windows, but I'm sure Mac users would also appreciate answers to this as well.)

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  • Outlook 2003 (with Exchange 2007) error: You cannot respond to a meeting without an Organizer

    - by Hissohathair
    The company recently upgraded to Exchange 2007. Since the upgrade users who are still on Outlook 2003 (SP3) get the following error for some meeting requests: You cannot respond to a meeting without an organizer. You must add an Organizer field to the item. The item has an organizer field filled in. Exchange is 2007 with SP1 MS Office (incl Outlook) is 2003 with SP3 Some users are using iPhones to accept / reject meetings. The iPhones never get an error like this. There are no delegates for the user attempting to accept or reject the meeting. Sometimes the meeting was previously accepted, sometimes not. We have not detected a pattern in the meeting requests that trigger the issue. I've found a few people asking the same question on other websites but no answers. Experts Exchange claims to have an answer but from looking at the discussion at the bottom of the page I'm pretty sure they don't.

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  • Changing an MSSQL clustered index field from containing "random" GUIDs to sequential GUIDs - how wil

    - by Eyvind
    We have an MSSQL database in which all the primary keys are GUIDs (uniqueidentifiers). The GUIDs are produced on the client (in C#), and we are considering changing the client to generate sequential (comb) GUIDs instead of just using Guid.NewGuid(), to improve db performance. If we do this, how will this affect installations that already have data with "random" GUIDs as clustered PKs? Can anything be done (short of changing all the PK values) to rebuild the indexes to avoid further fragmentation and bad insert performance? Please give explicit and detailed answers if you can; I am a C# developer at heart and not all too familiar with all the intricacies of SQL Server. Thanks!

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  • Download a file via HTTP from a script in Windows

    - by Jason R. Coombs
    I want a way to download a file via HTTP given its URL (similar to how wget works). I've seen the answers to this question, but I have two changes to the requirements: I'd like it to run on Windows 7 or later (though if it works on Windows XP, that's a bonus). I need to be able to do this on a stock machine with nothing but the script, which should be text that could be easily entered on a keyboard or copy/pasted. The shorter, the better. So, essentially, I'd like a .cmd (batch) script, VBScript, or Powershell script that can accomplish the download. It could use COM or invoke IE, but it needs to run without any input, and should behave well when invoked without a display (such as through a telnet session).

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  • Slow speeds on Samsung SSD PM800 256gb on a Lenovo W500

    - by cc0
    I recently bought a W500 with a 256gb samsung ssd drive. Now it seems ridiculously slow at writing. I am copying files at about 30mb/s, but I can read them at about 200mb/s. I tested it with the AS SSD Benchmark v1.4, and got a sequential writing speed of 34.64mb/s and reading speed of 196.95mb/s When I bought it the drive had only been in use for about 240 hours, and according to the CrystalDiskInfo app it had 98% health. Is there a bottleneck here somewhere? Or is the drive just plain bad. I'd really love it if someone could help me find some answers. The main relevant (I hope) w500 specs for this machine are; T9600 @ 2.8ghz 4gb ddr3

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  • How can I prevent my domain controller doing forward lookups for remote users?

    - by markmnl
    I have a Windows Server 2003 server in the office. I VPN into the LAN remotely. My VPN has a virtual NIC with the Windows Server as the primary DNS since it is a domain controller. When connected to the VPN and I do an nslookup or simply browse the web the DNS from the VPN provides the DNS answers. I believe this is because it has DNS forwarders, so queries it can't answer are forwarded and then it relays the answer. This is the desired behavior for workstations in the office (they should query their domain controller first); however for remote VPN users this is not desirable. I do not want my remote office's server to answer DNS queries it is not the authority of (which happens to be 192.168.x.x). Is there any way I can configure this?

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  • Allowing Remote Connection in IIS on Windows 7

    - by GiddyUpHorsey
    I'm trying to give access to a website in IIS on my Win 7 machine to another person on my network. He's unable to access it. I was wondering if perhaps it was because IIS isn't configured to allow remote connections (I seem to remember having to do this sort of thing on Win XP). I've hunted around in IIS and googled but am not finding a way to configure remote connections on Win 7. Some of the answers I've found seem to refer to Win Server 2008 and talk about a management service in IIS Manager, but it doesn't appear to be present on my machine.

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  • Truecrypt or default Disk Utility on Mac?

    - by Kaushik Gopal
    Windows by default doesn't come with a password protect folder option (other that Win7 ultimate), so I used to swear by Truecrypt which was great. But I've read in a couple of places that Mac OS X by default has a way of protecting folders using the Default Disk Utility. So my question is which is better, using TrueCrypt on the Mac or just sticking with the default Disk Utils app? Can somebody let me know the advantages of one over the other? A summary from the very helpful answers below: if you're looking for cross-platform usage Truecrypt is the obvious tool of choice if you're looking for convenience, and intend to stick only to the Mac platform, use the default Disk Utils app.

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  • Windows Storage Server 2003 R2 RDP Disconnection

    - by Antitribu
    I am unable to remote desktop to our Windows Storage Server 2003 R2 machine. There are a few people about with similar issues but no answers around. Symantec End Point is installed but no network protection. Using rdesktop in Linux I receive: ERROR: send: Connection reset by peer NOT IMPLEMENTED: PDU 12 ERROR: Connection closed Where the "PDU XX" number changes on each connection. In windows using the latest mstsc I receive: The connection was lost due to a network error. Try connecting again. If the problem persists, contact your network Administrator. Any ideas?

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  • Windows Server 2008 R2 64bit Screen Frozen and Remote Desktop Freezes but Server Continues Working

    - by Jacques
    I've asked this question a couple of times but I don't seem to be getting any real answers. We have a SBS (Windows Server 2008 Rc) server and suddenly the screen has started freezing. Even when we go into the system via remote desktop it worked once or twice (since the problem started), but now the RDP screen freezes once it gets just past the Welcome screen. The server itself is running, SQL is working, Exchange is working, file share is fine. It's just the UI that isn't working. We've tried hard resetting and that works for a short while before the problem comes back. Where do we begin to resolve this issue? Thanks, Jacques

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  • Is there a good tutorial for figuring out what a website is doing so your program can do the same th

    - by brian d foy
    Is there a good guide or tutorial for people who need to programmatically interact with dynamic websites? There's been a rash of Perl questions about that lately, and I haven't found a good resource to point people toward. I'm asking not because I need one but because I don't want to waste my time writing it if it already exists. Although I'm most interested in Perl, the extra tools and techniques are mostly the same. Typically, I see see these problems in people's questions: Handling, setting, and saving cookies Finding and interacting with forms Handling JavaScript inside your user-agent especially things like onLoad, onSumbit, and Ajax Using HTTP sniffer tools Using Web developer plugins in interactive browsers Interacting with DOM, screen scraping, etc. If there's no good tutorial, I'll add it to my list of things to do (unless someone else wants to do it :). Along the way, if you don't have a suggestion for an existing tutorial, please suggest the things that you think should be in a new one, including links, your favorite tools, and your own user-agent development experiences. I don't care about the particular language you use.

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  • Cloning Win 7 installation from MBR to GPR drive and make it bootable

    - by Nelluk
    I've seen threads on similar topics - such as this one - but the answers never seem to solve how to make it bootable. I have Win 7 64-bit on a PC installed on a 2tb MBR volume. The motherboard is UEFI compatible. I just installed a secondary internal 3TB drive which will be partitioned as GPT. Is there a relatively easy way to clone my installation over to the new drive and have that drive be bootable? I have used EaseUS Partition Master to clone the C volume to the D volume, but that would not boot and I assume the issue is that one is MBR and one is GPT. Is there a process to do this?

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  • VMWare Workstation Performance

    - by tekiegreg
    Hi there, awhile ago I upgraded my laptop to Windows 7 x64 from Windows XP 32 bit edition. However not before virtualizing the physical installation and I continue to run it under VMWare Workstation today. The performance on the resulting VM is just absolutely atrocious! I've done a lot of uninstalling stuff that's not longer needed since the machine is virtual in an effort to reduce RAM, but in general the responsiveness seems sluggish. I also run the Virtual Machine on it's own separate HD that is seldom used by the host OS. I'm just hoping for some general tips in increasing VMWare performance anywhere, thoughts? EDIT: Both of the below answers were excellent starting points for me. However I did like the selected answer's strategies on disk management. I am running the Virtual Machine in a separate external hard disk, likely I'm going to have to reconfigure somehow. Thanks all!

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  • django shopping cart as a beginner

    - by Jacques Knie
    Hi, i'm quite new to django and trying to add a shopping cart to a simple webshop. What I need is a simple cart that can be filled and presents its content, which is then sent to the vendor via email. So Satchmo might be too big for this task. Therefore i chose django-cart (http://code.google.com/p/django-cart/) which causes some problems now. 1. Is django-cart the right thing? Or are there any better approaches to this task? 2. As I am a beginner even django-cart makes me struggle. I used the view and the template of the django-cart-website, but writing a form that can be used to add products to the cart took me hours. I probably need help in understanding the general layout of a shopping cart and its integration into a website. 3. Two more specific questions: Is it possible to dynamically populate a formfield in a template (e.g. with {{ object.id }})? Is django-cart able to change (update) the contents of a cart? I hope it's not too many questions at once. Thanks in advance Jacques

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  • Optimized Publish/Subcribe JMS Broker Cluster and Conflicting Posts on StackOverFlow for the Answer

    - by Gene
    Hi, I am looking to build a publish/subscribe distributed messaging framework that can manage huge volumes of message traffic with some intelligence at the broker level. I don't know if there's a topology that describes this, but this is the model I'm going after: EXAMPLE MODEL A A) There are two running message brokers (ideally all on localhost if possible, for easier demo-ing) : Broker-A Broker-B B) Each broker will have 2 listeners and 1 publisher. Example Figure [subscriber A1, subscriber A2, publisher A1] <-- BrokerA <-- BrokerB <-- [publisher B1, subscriber B1, subscriber B2] IF a message-X is published to broker A and there no subscribers for it among the listeners on Broker-B (via criteria in Message Selectors or Broker routing rules), then that message-X will never be published to Broker-B. ELSE, broker A will publish the message to broker B, where one of the broker B listeners/subscribers/services is expecting that message based on the subscription criteria. Is Clustering the Correct Approach? At first, I concluded that the "Broker Clustering" concept is what I needed to support this. However, as I have come to understand it, the typical use of clustering entails either: message redundancy across all brokers ... or Competing Consumers pattern ... and neither of these satisfy the requirement in the EXAMPLE MODEL A. What is the Correct Approach? My question is, does anyone know of a JMS implementation that supports the model I described? I scanned through all the stackoverflow post titles for the search: JMS and Cluster. I found these two informative, but seemingly conflicting posts: Says the EXAMPLE MODEL A is/should-be implicitly supported: http://stackoverflow.com/questions/2255816/jms-consumer-with-activemq-network-of-brokers " this means you pick a broker, connect to it, and let the broker network sort it out amongst themselves. In theory." Says the EXAMPLE MODEL A IS NOT suported: http://stackoverflow.com/questions/2017520/how-does-a-jms-topic-subscriber-in-a-clustered-application-server-recieve-message "All the instances of PropertiesSubscriber running on different app servers WILL get that message." Any suggestions would be greatly appreciated. Thanks very much for reading my post, Gene

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  • Updating drivers on a Lenovo T410

    - by dcd018
    I have a few question regarding updating the drivers on my Lenovo T410. I have Windows 7 Ultimate 64 bit installed with a 32 bit(X86) sub directory. I'm not that familiar with updating drivers on 64bit Windows so I'm wondering if I should install both 32/64 bit driver versions instead of just 64 bit. Another question I have is Lenovo specific. On the support page for my device, there is a list of Windows updates available dating back to 2009, however I do have ThinkVantage update manager installed and it checks for Windows updates weekly. Should I install all of the Windows specific updates, or can I rely on update manager? My last question is if I should install the drivers for the T410 in any specific order? Any help is much appreciated as I haven't been able to find answers to these specific questions here, or by googling. Thanks in advance

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  • How do I make an exe into a service on Windows?

    - by user3677994
    I recently made an application that has multiple parts. One of the parts is a networking tool - it always starts with the OS, and it never displays any sort of message. It does, however, start an incredibly irritating console, which is impossible to get rid of without closing the program itself (please just accept this one as given). I have decided to work around this problem by starting the program (it's a *.exe) as a service, thus stopping it from showing up at all. As the application will be distributed to various computers (hence the need for a networking tool in the first place). I need a way to make this program install as a service (so, I don't really want answers that tell me to go through a series of menus on the Control Panel or download a 3rd-party application that has to stay on whichever computer the service will run on). How can I do this?

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  • iPhone Landscape FAQ and Solutions

    - by Johannes Rudolph
    There has been a lot of confusion and a set of corresponding set of questions here on SO how iPhone applications with proper handling for Landscape/Portrait mode autorotation can be implemented. It is especially difficult to implement such an application when starting in landscape mode is desired. The most common observed effect are scrambled layouts and areas of the screen where touches are no longer recognized. A simple search for questions tagged iphone and landscape reveals these issues, which occur under certain scenarios: Landscape only iPhone app with multiple nibs: App started in Landscape mode, view from first nib is rendered fine, everything view loaded from a different nib is not displayed correctly. Iphone Landscape mode switching to Portraite mode on loading new controller: Self explanatory iPhone: In landscape-only, after first addSubview, UITableViewController doesn’t rotate properly: Same issue as above. iPhone Landscape-Only Utility-Template Application: Layout errors, controller does not seem to recognize the view should be rotated but displays a clipped portrait view in landscape mode, causing half of the screen to stay blank. presentModalViewController in landscape after portrait viewController: Modal views are not correctly rendered either. A set of different solutions have been presented, some of them including completely custom animation via CoreGraphics, while others build on the observation that the first view controller loaded from the main nib is always displayed correct. I have spent a significant amount of time investigating this issue and finally found a solution that is not only a partial solution but should work under all these circumstances. It is my intend with this CW post to provide sort of a FAQ for others having issues with UIViewControllers in Landscape mode. Please provide feedback and help improve the quality of this Post by incorporating any related observations. Feel free to edit and post other/better answers if you know of any.

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  • Help setting up NSD daemon (DNS server)

    - by Catalin
    While searching for a secure dns server I came across the NSD project. I was really impressed by what seemed to me the best option out there that's open source. One problem thought their 'tutorial' is really not beginner friendly. I have basic DNS knoledge but what's in there is out of my league. I need to have multiple sites on this CentOS server I've recently got my hands on. They also need to receive email. Details: I have a master host and would love to set this in the way described in the rows that follow: masterhost.com -> ns1.masterhost.com mail.masterhost.com www.masterhost.com addonhost.com -> ns1.masterhost.com mail.masterhost.com www.addonhost.com And so on. Any help in setting up this DNS server please? All answers and suggestions are welcomed. Thank you in advance.

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  • Programmer Puzzle: Encoding a chess board state throughout a game

    - by Andrew Rollings
    Not strictly a question, more of a puzzle... Over the years, I've been involved in a few technical interviews of new employees. Other than asking the standard "do you know X technology" questions, I've also tried to get a feel for how they approach problems. Typically, I'd send them the question by email the day before the interview, and expect them to come up with a solution by the following day. Often the results would be quite interesting - wrong, but interesting - and the person would still get my recommendation if they could explain why they took a particular approach. So I thought I'd throw one of my questions out there for the Stack Overflow audience. Question: What is the most space-efficient way you can think of to encode the state of a chess game (or subset thereof)? That is, given a chess board with the pieces arranged legally, encode both this initial state and all subsequent legal moves taken by the players in the game. No code required for the answer, just a description of the algorithm you would use. EDIT: As one of the posters has pointed out, I didn't consider the time interval between moves. Feel free to account for that too as an optional extra :) EDIT2: Just for additional clarification... Remember, the encoder/decoder is rule-aware. The only things that really need to be stored are the player's choices - anything else can be assumed to be known by the encoder/decoder. EDIT3: It's going to be difficult to pick a winner here :) Lots of great answers!

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  • Help with editing data in entity framework.

    - by Levelbit
    Title of this question is simple because there is no an easy explanation for what I'm trying to ask you. I hope you'll understand in the end :). I have to tables in my database: Company and Location (relationship:one to many) and corresponding entity sets. In my wpf application I have some datagrid which I want to fill with locations and to be able to edit every row in separate window as some form of details view (so I don't want to edit my data in datagrid). I did this by accessing Location entity from selected row and creating a new Location entity and then I copy properties from original entity to newly created. Something like cloning the object. After editing if I press OK changed data is copied to original object back, and if I press Cancel nothing happens. Of course, you probably thinking I could use NoTracking option and AttachAsModified method as was mentioned as solution in some earlier questions(see:http://stackoverflow.com/questions/803022/changing-entities-in-the-entityframework) by Alex James, but lets say I had some problems about that and I have my own reasons for doing this. Finally, because navigation property(Company) of my location entity is assigned to newly created location object(during cloning) from some reason in object context additional object as copy of object I want to edit from datagrid is created without my will(similar problem :http://blogs.msdn.com/alexj/archive/2009/12/02/tip-47-how-fix-up-can-make-it-hard-to-change-relationships.aspx). So, when I do ObjectContext.SaveChanges it inserts additional row of data into my database table Location, the same as the one i wanted to edit. I read about sth like this, but I don't quite understand why is that and how to block or override this. I hope I was clear as I could. Please, solutions or some other ideas.

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