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• How to correctly configure DNS for Icelandic domains and Plesk

  - by Leonard Challis

  I have a domain registered with ISNIC (domain.is). They only let you set nameservers that pass their requirements. I've been told it's this requirement that I need to fix: Nameserver must be consistently registered in DNS, i.e. its own A resource record must be available and a corresponding PTR resource record as well. I allocated two new IP addresses from my server host and at that point set their PTR records to ns0.domain.is and ns1.domain.is. After that I created two A records for that domain in Plesk, again ns0. and ns2.domain.is with their respective IPs. Next, I went to the ISNIC page to register my nameservers, along with their IP addresses I'd allocated and this worked perfectly for both without error. So the final job was to set the nameservers for the domain via ISNIC's control panel, however when I try, I'm getting this error: Test results for "NS0.DOMAIN.IS": The nameserver ns1.vps123.vpsprovider.com is not consistently registered in DNS (ns1.vps123.vpsprovider.com => 1123.123.123.123 => vps123.vpsprovider.com) The nameserver ns0.vps123.vpsprovider.com is not consistently registered in DNS (ns0.vps123.vpsprovider.com => 1123.123.123.123 => vps123.vpsprovider.com) The nameserver ns0.DOMAIN.IS is missing from the NS record set for DOMAIN.IS Test results for "NS1.DOMAIN.IS": The nameserver ns1.DOMAIN.IS is missing from the NS record set for DOMAIN.IS The nameserver ns0.DOMAIN.IS is missing from the NS record set for DOMAIN.IS This is really at the limits of my DNS knowledge I'm afraid. It feels like I'm close but maybe missing a vital part, linking the nameservers in Plesk or something?

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• Internet access using Edimax BR-6204WG as NIC

  - by Mat Richardson

  My internet access at home is provided by Virgin Media via their superhub. I have a laptop with no NIC - however I do have a spare wireless router, the Edimax BR-6204WG, which I have been led to believe can be used to bridge wireless connections. Only problem is, I'm not sure how to go about doing this. The manual for the device is here:- http://www.edimax.co.uk/images/Image/manual/Wireless/BR-6204Wg/BR-6204Wg_Manual.pdf Basically, I want to be able to connect the Edimax wireless router to my laptop using ethernet cable and to use it to pick up the wireless connection from my Virgin superhub. I've managed to get so far in some ways, but then I'm stuck.

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• Why is dwm.exe using so much memory?

  - by Leonard Challis

  I've scoured the web, but I'm sick of reading "scan your computer for viruses" and "upgrade your RAM" on answers to similar questions to this. I understand that dwm.exe is for (simply put) caching bitmaps for things like Aero-peek and similar, but as far as I have read it shouldn't be using vast amounts of memory. My colleague and I both have 4GB of RAM, Core 2 Duo, blah, blah -- essentially they're pretty capable. His dwm.exe is running at around 30mb, mind is currently running at about half a gig, though it does fluctuate quite a lot. This is the same while running the exact same applications (currently Zend studio, FireFox (with firemin - low memory usage), Outlook). Every so often I will get a notification asking me if I want to switch to Aero Basic because it's using too much memory, and sometimes it will just switch itself to basic and let me know why. I know it's possible to stop it switching, but I want to know why it is using too much memory otherwise it's just papering over the cracks. One thing to add is this seems to have started after a robbery on Monday, where two of my monitors were stolen, and I had to temporarily use a couple of alternative monitors. I am now using brand new monitors but the problem is the same. All drivers installed and working seemingly fine. Any ideas why the usage is so high? We are using windows 7 64-bit Professional.

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• Can I completely convert an Ubuntu desktop installation to a server one? (not just the packages)

  - by Rey Leonard Amorato

  I am aware that the server and desktop editions only differ by the packages installed, and I can install server packages (LAMP etc.) into a desktop edition and get the same thing. However, I want to be able to completely change my desktop installation into a server edition. e.g: when I type uname -a or lsb_release -a it is supposed to say Ubuntu server or something. I currently have an 11.10 desktop installation with LAMP stack installed and the info displayed by apache is "Apache blah blah, on (Ubuntu) server. Where does apache get this information that I am using an Ubuntu desktop installation and not a server one? Is there a config file(s) to edit?

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• Citrix Plug-in with TCP/IP access

  - by Mat Banik

  I have created for user file named serverDesktop.ica with following content: [ApplicationServers] XenApp= [XenApp] TransportDriver=TCP/IP Address=IP or DOMAIN NAME of the Server ProxyType=auto WinStationDriver=ICA 3.0 Username= Domain= Password= InitialProgram= WorkDirectory= ClientAudio=On ScreenPercent=100 DesiredHRES=1024 DesiredVRES=768 DesiredColor=8 [WFClient] Version=2 The above just gives the user remote desktop to the server. The question is how do I bring up all the Apps in farm via TCP/IP. The Citrix online plugin does not allow the same access as Program Neighborhood did to farms. Please help.

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• Install graphics card hardware drivers via remote desktop in Windows 7

  - by Mat Banik

  I come across the same problem over and over. I working on computer that is remote and it is missing graphics card drivers. Just has some default drivers that have limited resolution. I would like to install program that will read the chipset on graphics card and tell me the values so I can go on manufacturer website and download the appropriate drivers. Windows 7 or Windows XP application would do, if you know about any.

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• How to reformat reStructuredText?

  - by wal-o-mat

  I'm writing reST in vim, which handles line breaks for me (after 80 chars). However, since I frequently go back and edit the text before, lines get ugly again. For example, in tables, it's sometimes annoying to re-format a complete table just because you need a line break in some place. So I wish I had a program that reads my ugly-but-correct reStructuredText and outputs it nicely formatted and wrapped. I found that pandoc in.rst -w rst mostly works, but it has some drawbacks. For example :author: John Doe becomes author John Doe and title formatting is changed as well. Sadly, there seems to be no rst2rst or something similar. Does anyone have some advice?

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• Setting up a home network

  - by Mat Richardson

  I'm trying to get my head around how to do this with the equipment I have. Here's how it is.. I have an old laptop that has server 2003 installed on it. This has no wireless NIC, but I have a spare wireless router that I can wire to it. We have a virgin wireless router which provides the home with internet access. What I would like to do it make resources on the server 2003 machine available to the rest of the devices in the home - specifically a couple of laptops running windows 7. Ideally I'd like to be able to use the laptop as a fileserver but maybe also offer application virtualization. In the first instance however, I'd like to create a file server with the laptop and allow connections to it by the other machines. Virtualisation is just a 'nice to have'... Given the hardware I have is this possible? Can you point me in the right direction how to do what I want if this is the case?

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• Install Second Copy of Windows in a Partition, Block Access to other Partitions

  - by Mat

  I want to lend my computer to my flatmate so that he can play some games for which his computer is underpowered. Is it possible to install a second copy of Windows 7 into a separate partition and configure it such that it has no access to the other partitions and disks on the computer, the ones that I use in my main Windows install? I'm not concerned about security, just want to avoid him accidentially messing with my data somehow. Can I do that?

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• rsync not using forwarded ssh credentials

  - by Mat

  I have a situation where I would like to rsync some files from a remote server to a server in my office. The source server requires key-based authentication and I have an appropriate key set up on my desktop machine. If I ssh into the local server and then ssh to the remote server, ssh agent forwarding works correctly. However, when I try to rsync over ssh I get permission denied. So, Desktop -- Local server -- Remote server. When ssh'd onto the local server ssh user@remote works, but rsync -avPe ssh user@remote:/src /dest does not - Permission denied (publickey).

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• Windows 7 just deleted 4 days of work

  - by Mat

  Hey! I'm just a bit about to freak out. I just finished a project and rebooted my computer. It didn't want to boot anymore so I had to use the Windows 7 system repair option. It ran for a minute and then booted up. Now most of my source code from the last 4 days of work is gone! Background: sometimes (most often after installing new software) my notebook won't boot up anymore. It will just show the little Windows 7 flag, but not read from the hard disk anymore. If I hard-abort and reboot then, it asks me whether to start Windows normally (which won't work) or to run "Windows startup repair". If I run it, it does some stuff for about two or three minutes and then I can boot Windows again. Usually after this, .exe files I added to the computer during previous days are gone - but other files so far were not touched. But now, after this happened, a whole bunch of ".as" (ActionScript source files) from my project are gone! Does anyone know where and whether there's a way to recover them?

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• How to avoid loop limitation in a openvz container?

  - by mat.viguier

  On a openVZ containing Deb7 I need to lock the maximum size of a folder, which is used to upload on a php based web server. The directory is synced, so I have to lock the maxsize. MAXSIZE should be upgradable by adding some physical disk later ... I want to use a file as a block device for a file system. So I have done : dd if=/dev/zero of=/disk2/filesystem.dat bs=1M count=100 Then, I made the filesystem on it mkfs.ext4 filesystem.dat Then I tried to mount it : mkdir /opt/filesystem ; mount /disk2/filesystem.dat /opt/filesystem My OpenVZ (it is on a VPS) has no loop module in the kernerl. So I got Could not find any loop device as usual under OpenVz So i think I have to use FUSE, but I really do not know HOW .... Any idea on locking the size of directory under OpenVZ ?

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• Powerpoint: control image sequence with a slider

  - by Mat

  I have an image sequence (10 images) that step by step visualize the construction of something. I'd like to include these images into my powerpoint presentation in such a way that i can step between them by moving a slider below the image, similar to the timebar of a movie player (in quicktime for example you can step through a move file frame by frame by moving the bar on the bottom). What's the easiest way to do this with Microsoft Powerpoint 2010?

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• Eigenvector computation using OpenCV

  - by Andriyev

  Hi I have this matrix A, representing similarities of pixel intensities of an image. For example: Consider a 10 x 10 image. Matrix A in this case would be of dimension 100 x 100, and element A(i,j) would have a value in the range 0 to 1, representing the similarity of pixel i to j in terms of intensity. I am using OpenCV for image processing and the development environment is C on Linux. Objective is to compute the Eigenvectors of matrix A and I have used the following approach: static CvMat mat, *eigenVec, *eigenVal; static double A[100][100]={}, Ain1D[10000]={}; int cnt=0; //Converting matrix A into a one dimensional array //Reason: That is how cvMat requires it for(i = 0;i < affnDim;i++){ for(j = 0;j < affnDim;j++){ Ain1D[cnt++] = A[i][j]; } } mat = cvMat(100, 100, CV_32FC1, Ain1D); cvEigenVV(&mat, eigenVec, eigenVal, 1e-300); for(i=0;i < 100;i++){ val1 = cvmGet(eigenVal,i,0); //Fetching Eigen Value for(j=0;j < 100;j++){ matX[i][j] = cvmGet(eigenVec,i,j); //Fetching each component of Eigenvector i } } Problem: After execution I get nearly all components of all the Eigenvectors to be zero. I tried different images and also tried populating A with random values between 0 and 1, but the same result. Few of the top eigenvalues returned look like the following: 9805401476911479666115491135488.000000 -9805401476911479666115491135488.000000 -89222871725331592641813413888.000000 89222862280598626902522986496.000000 5255391142666987110400.000000 I am now thinking on the lines of using cvSVD() which performs singular value decomposition of real floating-point matrix and might yield me the eigenvectors. But before that I thought of asking it here. Is there anything absurd in my current approach? Am I using the right API i.e. cvEigenVV() for the right input matrix (my matrix A is a floating point matrix)? cheers

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• pointPolygonTest in OpenCV 2.2

  - by Mathieu Dubois

  I wanted to use pointPolygonTest but I have a problem. I'm stuck to OpenCV2.2. I tried to use the code found here: http://docs.opencv.org/doc/tutorials/imgproc/shapedescriptors/point_polygon_test/point_polygon_test.html#point-polygon-test I use findContours to detect contours in an image. Under OpenCV 2.2 returns a vector< vector<Point> >. The problem is that pointPolygonTest accept a matrix as an entry. Therefore the code doesn't compile with OpenCV 2.2: erreur: invalid initialization of reference of type ‘const cv::Mat&’ from expression of type ‘std::vector<cv::Point_<int>, std::allocator<cv::Point_<int> > >’ Under more recent OpenCV versions, the findContours function returns vector<Mat> so it's easy to pass to pointPolygonTest (see the example). I guess I could convert the vector< vector<Point> > to vector<Mat>. Unfortunately the documentation is not very clear about the format. Does anybody have an advice?

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• Calculating skew of text OpenCV

  - by Nick

  I am trying to calculate the skew of text in an image so I can correct it for the best OCR results. Currently this is the function I am using: double compute_skew(Mat &img) { // Binarize cv::threshold(img, img, 225, 255, cv::THRESH_BINARY); // Invert colors cv::bitwise_not(img, img); cv::Mat element = cv::getStructuringElement(cv::MORPH_RECT, cv::Size(5, 3)); cv::erode(img, img, element); std::vector<cv::Point> points; cv::Mat_<uchar>::iterator it = img.begin<uchar>(); cv::Mat_<uchar>::iterator end = img.end<uchar>(); for (; it != end; ++it) if (*it) points.push_back(it.pos()); cv::RotatedRect box = cv::minAreaRect(cv::Mat(points)); double angle = box.angle; if (angle < -45.) angle += 90.; cv::Point2f vertices[4]; box.points(vertices); for(int i = 0; i < 4; ++i) cv::line(img, vertices[i], vertices[(i + 1) % 4], cv::Scalar(255, 0, 0), 1, CV_AA); return angle; } When I look at then angle in debug I get 0.000000 However when I give it this image I get proper results of a skew of about 16 degrees: How can I properly detect the skew in the first image?

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• Use jQuery to find and add an image tooltip

  - by lund.mikkel

  Hey people Okay, what I'm trying to accomplish is a simple tool tip that, when you hover over the name of a color, shows a little image of that color. The html markup looks like this: <label class="colorPicker"> <input type="radio" checked="" id="20" value="20" name="id[2]"> <img width="16" height="16" title=" DinoBlack Mat " alt="DinoBlack Mat" src="images/attributes/color/dinoblack_mat.jpg">DinoBlack Mat </label> <label class="colorPicker"> <input type="radio" id="874" value="874" name="id[2]"> <img width="16" height="16" title="XrayBlue shiny" alt="XrayBlue shiny" src="images/attributes/color/xrayblue_shiny.jpg">XrayBlue shiny </label> I'm using the jQuery plugin "Tooltip" and I've added following to my main js-file: $('.colorPicker').tooltip({ track: true, delay: 0, showURL: false, fade: 250, bodyHandler: function() { return $("<img/>").attr("src", [THE SOURCE FOR THE IMAGE]); } }); The idea is simply that the image should be hidden by default. But when you hover over the text the little thumbnail shows up and makes it easy to recognize the color. The problem is I haven't got a clue how to get the src for the thumbnail. I don't know how to extract the src from the img inside the selected element. I've tried various combinations using the this keyword, but nothing seemed to work. I've also tried to add the src path as a rel attribute to the label, but also without any success. Should be needless to say I also control the PHP-output... I really hope you can help me. I've search the web for days without any luck. I'm getting desperate :D /Mikkel Lund

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• using gsub to modify output of xtable command

  - by stevejb

  Hello, my.mat <- cbind(1:5, rnorm(5), 6:10, rnorm(5)) colnames(my.mat) <- c("Turn", "Draw","Turn", "Draw") print(xtable(my.mat)) yields \begin{table}[ht] \begin{center} \begin{tabular}{rrrrr} \hline & Turn & Draw & Turn & Draw \\ \hline 1 & 1.00 & -0.72 & 6.00 & 0.91 \\ 2 & 2.00 & 0.57 & 7.00 & 0.56 \\ 3 & 3.00 & 1.08 & 8.00 & 0.55 \\ 4 & 4.00 & 0.95 & 9.00 & 0.46 \\ 5 & 5.00 & 1.94 & 10.00 & 1.06 \\ \hline \end{tabular} \end{center} \end{table} I want to filter out the \begin{table} and \end{table} lines. I can do this using gsub, but how to I get the results of print(xtable(... into a variable? Thanks for the help Stack Overflow R community!

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• R: Are there any alternatives to loops for subsetting from an optimization standpoint?

  - by Adam

  A recurring analysis paradigm I encounter in my research is the need to subset based on all different group id values, performing statistical analysis on each group in turn, and putting the results in an output matrix for further processing/summarizing. How I typically do this in R is something like the following: data.mat <- read.csv("...") groupids <- unique(data.mat$ID) #Assume there are then 100 unique groups results <- matrix(rep("NA",300),ncol=3,nrow=100) for(i in 1:100) { tempmat <- subset(data.mat,ID==groupids[i]) #Run various stats on tempmat (correlations, regressions, etc), checking to #make sure this specific group doesn't have NAs in the variables I'm using #and assign results to x, y, and z, for example. results[i,1] <- x results[i,2] <- y results[i,3] <- z } This ends up working for me, but depending on the size of the data and the number of groups I'm working with, this can take up to three days. Besides branching out into parallel processing, is there any "trick" for making something like this run faster? For instance, converting the loops into something else (something like an apply with a function containing the stats I want to run inside the loop), or eliminating the need to actually assign the subset of data to a variable?

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• OpenCV. cvFnName() works, but cv::FunName() doesn't work

  - by Innuendo

  I'm using OpenCV to write a plugin for a simulator. I've made an OpenCV project (single - not a plugin) and it works fine. When I added OpenCV libs to the plugin project, I added all libs required. Visual Studio 2010 doesn't highlight any code line with red. All looks fine and compiles fine. But in execution, the program halts with a Runtime Error on any cv::function. For example: cv::imread, or cv::imwrite. But if I replace them with cvLoadImage() and cvSaveImage(), it works fine. Why does this happen? I don't want to rewrite the whole script in old-api-style (cvFnName). It means I should change all Mat objects to IplImages, and so on. UPDATE: // preparing template ifstream ifile(tmplfilename); if ( !FILE_LOADED && ifile ) { // loading template file Mat tmpl = cv::imread(tmplfilename, 1); // << here occurs error FILE_LOADED = true; } Mat src; Bmp2Mat(hDC, hBitmap, src); TargetDetector detector(src, tmpl); detector.detectTarget(); If I change to: if ( !FILE_LOADED && ifile ) { IplImage* tmpl = 0; tmpl = cvLoadImage(tmplfilename, 1); // no error occurs } And then no error occurs. Early it displayed some Runtime Error. Now, I wanted to copy exact message and it just crashes the application (simulator, what I am pluginning). It displays window error - to kill process or no. (I can't show exact message, because I'm using russian windows now)

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• C++ Vector of vectors is messing with me

  - by xbonez

  If I put this code in a .cpp file and run it, it runs just fine: #include <iostream> #include <vector> #include <string> using namespace std; typedef vector<int> row; typedef vector<row> myMatrix; void main() { //cout << endl << "test" << endl; myMatrix mat(2,2); mat[0][1] = 2; cout << endl << mat[0][1] << endl; } But, if I make a .h and a .cpp file with the .h file like this, it gives me boatloads of errors. #ifndef _grid_ #define _grid_ #include<iostream> #include<vector> #include<string> using namespace std; typedef vector<int> row; typedef vector<row> myMatrix; class grid { public: grid(); ~grid(); int getElement(unsigned int ri, unsigned int ci); bool setElement(unsigned int ri, unsigned int ci, unsigned int value); private: myMatrix sudoku_(9,9); }; #endif These are some of the errors I get: warning C4091: 'typedef ' : ignored on left of 'int' when no variable is declared error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

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• Presenting Designing an SSIS Execution Framework to Steel City SQL 18 Jan 2011!

  - by andyleonard

  I'm honored to present Designing an SSIS Execution Framework (Level 300) to Steel City SQL - the Birmingham Alabama chapter of PASS - on 18 Jan 2011! The meeting starts at 6:00 PM 18 Jan 2011 and will be held at: New Horizons Computer Learning Center 601 Beacon Pkwy. West Suite 106 Birmingham, Alabama, 35209 ( Map for directions ) Abstract In this “demo-tastic” presentation, SSIS trainer, author, and consultant Andy Leonard explains the what, why, and how of an SSIS framework that delivers metadata-driven...(read more)

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• Join the Authors of SSIS Design Patterns at the PASS Summit 2012!

  - by andyleonard

  My fellow authors and I will be presenting a day-long pre-conference session titled SSIS Design Patterns at the PASS Summit 2012 in Seattle Monday 5 Nov 2012! Register to learn patterns for: Package execution Package logging Loading flat file sources Loading XML sources Loading the cloud Dynamic package generation SSIS Frameworks Data warehouse ETL Data flow performance   Presenting this session: Matt Masson Tim Mitchell Jessica Moss Michelle Ufford Andy Leonard I hope to see you in Seattle!...(read more)

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• SSIS Training 15-19 Oct in Reston Virginia

  - by andyleonard

  Early bird registration is now open for Linchpin People ’s SSIS training course From Zero To SSIS scheduled for 15-19 Oct 2012 in Reston Virginia! Register today – the early bird discount ends 28 Sep 2012. Training Description From Zero to SSIS was developed by Andy Leonard to train technology professionals in the fine art of using SQL Server Integration Services (SSIS) to build data integration and Extract-Transform-Load (ETL) solutions. The training is focused around labs and emphasizes a hands-on...(read more)

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• Windows Phone 7 - Développez avec Visual Studio, Silverlight et XNA, critique par Jérôme Lambert

  Bonjour, La rédaction de Developpez.com a lu pour vous l'ouvrage suivant : Windows Phone 7 - Développez avec Visual Studio, Silverlight et XNA de Julien CORIOLAND, Léonard LABAT et Florent SANTIN paru aux Editions ENI. [IMG]http://images-eu.amazon.com/images/P/2746061317.08.MZZZZZZZ.jpg[/IMG] Lire la critique entière L'avez-vous lu ? Comptez-vous le lire bientôt ? Quel est votre avis ?...

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