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  • Tips for adapting Date table to Power View forecasting #powerview #powerbi

    - by Marco Russo (SQLBI)
    During the keynote of the PASS Business Analytics Conference, Amir Netz presented the new forecasting capabilities in Power View for Office 365. I immediately tried the new feature (which was immediately available, a welcome surprise in a Microsoft announcement for a new release) and I had several issues trying to use existing data models. The forecasting has a few requirements that are not compatible with the “best practices” commonly used for a calendar table until this announcement. For example, if you have a Year-Month-Day hierarchy and you want to display a line chart aggregating data at the month level, you use a column containing month and year as a string (e.g. May 2014) sorted by a numeric column (such as 201405). Such a column cannot be used in the x-axis of a line chart for forecasting, because you need a date or numeric column. There are also other requirements and I wrote the article Prepare Data for Power View Forecasting in Power BI on SQLBI, describing how to create columns that can be used with the new forecasting capabilities in Power View for Office 365.

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  • Temporary R+W CIFS share for non-root accounts?

    - by Coder
    I want to set up a cross platform mail client (Thunderbird), and so far I want to use NAS as a profile store. The NAS is CIFS based, and can be mounted on both Windows and Ubuntu. Also the locking works fine for mutex, and setup seems to work as a proof of concept. The problem is the Linux mount. Since I'm using a laptop, I'm not always connected to network, hence, I can't use the /etc/fstab to set up CIFS share with a modified group id. And the share has to be mounted using mount -t cifs ..., which causes it to be owned by root, and owned so badly, that it can't be chowned to the regular user account. This causes read only issues for Thunderbird, which seem to be solved if Thunderbird is launched via sudo. But I would like to avoid that and use a script to mount the share on-demand to a profile location, with profile based privileges and access rights. Is there a way to achieve that?

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  • SmartXLS for .Net v2.1.4 released

    SmartXLS is a high performance .NET Excel component which can write, read, calculate Excel compatible files without the need for Microsoft Excel on either the developer or client machines. It was entirely written in 100% managed C# code.Features list:Cell formattingformula calculationread/write Encrypted Excel files(xls and xlsx files).create Chart,pivot table from scratchexport/import data to/from datatableNew release features:Excel2007 tables support.Excel2007 ConditionFormat support.http://ww...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Impact of variable-length loops on GPU shaders

    - by Will
    Its popular to render procedural content inside the GPU e.g. in the demoscene (drawing a single quad to fill the screen and letting the GPU compute the pixels). Ray marching is popular: This means the GPU is executing some unknown number of loop iterations per pixel (although you can have an upper bound like maxIterations). How does having a variable-length loop affect shader performance? Imagine the simple ray-marching psuedocode: t = 0.f; while(t < maxDist) { p = rayStart + rayDir * t; d = DistanceFunc(p); t += d; if(d < epsilon) { ... emit p return; } } How are the various mainstream GPU families (Nvidia, ATI, PowerVR, Mali, Intel, etc) affected? Vertex shaders, but particularly fragment shaders? How can it be optimised?

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  • Is installing Ubuntu 10.10 still a viable option?

    - by Kartik Anand
    I fell in love with ubuntu when 10.10 was released. It was the perfect OS for me, but then, the 11 and the 12 series came, and I starting hating it (Pun intended) But seriously, I want to stick to ubuntu 10.10, I have the .iso file with me. I want to go ahead and install it. My question is, since its not currently supported, what problems will I face? Will I be eligible for update? I mean atleast till the time it was supported Can I somehow get security updates and patches Will the latest software available still run on ubuntu 10.10 I don't care much about drivers, as much as I care about python, php, apache, wine and other softwares. Will the software center work?and be updates as well? What issues am I most prone to face?

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  • Sluggish/unresponsive trackpad on pre-unibody MacBook Pro

    - by Art
    I am running Ubuntu Natty Narwhal on pre-unibody MacBook Pro (2007 I believe). There seems to be a problem with trackpad - it barely works, in order to move cursor you have to move your finger a lot, and it terminates the 'gestures' abruptly - say you are moving the cursor with your finger and out of the blue it just stops, although the finger is still in contact with the surface of the trackpad. Those issues seem to dissapear as soon as I boot Mac OS X, so I suspect it is something Ubuntu-specific. Also, if I try to move the cursor with not just fingertip but increase the contact area, it seems to work just fine, although it is hardly convenient.

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  • 25. Treffen der FraOSUG am 18. September 2012

    - by uligraef
    Zum 25. Treffen der FraOSUG (Frankfurter Open Solaris / Solaris / Oracle Solaris Users Group) treffen wir uns erstmals in den Räumlichkeiten der Geschäftstelle in Dreieich. Wann? 18. September 2012, 18:00 - 21:00 Uhr Wo? Oracle, Geschäftsstelle Frankfurt, Robert Bosch Str. 5, 63303 Dreieich Agenda: Begrüßung Optimale Datenkompression kleiner Datenmengen mit Suffix Arrays Nachdem neulich Interesse bekundet wurde wird hier der Vortrag vom mrmcd12 wiederholt.(Ulrich Gräf) Roundtable: ZFS Performance -- Die Diskussion zum Vortrag vom letzten Mal (Alle) Diskussion(alle)  Anmeldung bitte mit Doodle . Mehr siehe auf der FraOSUG Homepage.

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  • Coming Soon! Oracle Global Trade Management Solutions

    An exciting new solution offering, Oracle Global Trade Management helps companies manage the Has the complexity of worldwide trade compliance while also mitigating compliance risk and uncovering supply chain inefficiencies. Oracle Global Trade Management helps organizations lower operational costs and improve network efficiencies by created barriers and roadblocks in your business processes? Do you seek ways to mitigate compliance risk while at the same time find hidden cash in your supply chain? If these issues affect your company, tune in to hear how the new Oracle Global Trade Management solution automatinges and streamlininges cross-border transactions. as part of the Value Chain Execution suite and a native trade and transportation platform.

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  • Gaming with ATI open-source drivers

    - by user7174
    I have recently bought humble bundle 2 ( http://www.humblebundle.com/ ). Is there a way to run Braid using ATI's open-source drivers? The game always crashes. When do get it to start in windowed mode once i go to the first level it will crash. I am using the lastest version of Braid (ST3C ignored) When I use the proprietary drivers Braid works flawlessly and World of Goo performance is increased. However there is terrible screen tearing with the ATI propritary drivers. So my question is: How do I play Braid if I want to use the proprietary drivers?

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  • Designing an API on top with Java RMI and Rest APIs

    - by user1303881
    I'm working on the backend of a java web application. We have a document repository (Fedora Commons specifically) where we house xml files. I want to abstract the API of the repository internally so that we aren't tightly coupled to one product. I'd also like to give the flexibility of connecting to to a repository via Java RMI or REST APIs. I was hoping to get advice or resources on how to implement something like this. My thought it that I'd have some abstract repository class that had methods like getRecord, updateRecord, and deleteRecord. In the constructor I would pass the URI for the repository and the API method and port. This would allow some flexibility in the future so that if the REST api became more practical, but allow the flexibility or using RMI which could (should?) have better performance. Am I over thinking this or am I on the right path?

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  • Interview question: How would you implement Google Search?

    - by ripper234
    Supposed you were asked in an interview "How would you implement Google Search?" How would you answer such a question? There might be resources out there that explain how some pieces in Google are implemented (BigTable, MapReduce, PageRank, ...), but that doesn't exactly fit in an interview. What overall architecture would you use, and how would you explain this in a 15-30 minute time span? I would start with explaining how to build a search engine that handles ~ 100k documents, then expand this via sharding to around 50M docs, then perhaps another architectural/technical leap. This is the 20,000 feet view. What I'd like is the details - how you would actually answer that in an interview. Which data structures would you use. What services/machines is your architecture composed of. What would a typical query latency be? What about failover / split brain issues? Etc...

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  • How to review the current state of open source vs. closed source graphics drivers?

    - by Bucic
    How to know whether it's worth it to replace open source drivers installed by default with proprietary ones. Are there any benchmarks? Major known issues summaries. I don't mean 'at the time of writing this post'. I mean an up-to-date status on how the drivers compare. This page https://help.ubuntu.com/community/BinaryDriverHowto/ certainly doesn't do much on the matter, nor it even mentions Intel. EDIT: I've just learned there is no Intel proprietary driver because they made their drivers open source http://askubuntu.com/a/17395/29347

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  • Trouble exporting Maya models to Panda3D?

    - by Aerovistae
    Having issues here. I added the Panda3D exporter script thing to Maya. 2 things: When I go to export to a .egg, no .egg is formed. Instead a fileToBeExported_temp.mb appears next to the original fileToBeExported.ma. My models use curving meshes with many subdivisions, easily in the thousands, like on the smoothed tentacles of an octopus. Will Panda be able to handle this in the first place? I can't find out on my own since it won't export.

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  • NEON Intrinsic Support in CE7

    - by Kate Moss' Open Space
    Just a side note for people who may be interested in creating high performance code to take advantage on NEON instruction set but wish to use NEON intrinsic instaed of coding assembly. Compiler won't generate NEON opcode unless application use the NEON intrinsic explicitly. Basically, you need ARMv7 build enviroment, so compiler can emit NEON opcode. Intrinsic prototype can be found in public\COMMON\sdk\inc\arm_neon.h and that is all you got. If you ever find an NEON opcode does not have corresponding intrinsic, you still need to use the old trick - write that part of code in assembly.

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  • From Pocket to Instapaper

    - by Michael Freidgeim
    Some time ago I’ve described the issues that I’ve had since a new version of Read It Later, named Pocket, was introduced.I’ve waited with hope for a new upgrade, but I had a huge disappointment with the latest version 16 June 2012. It didn’t fixed any of the two major problems, that I  experienced since new Pocket was introduced-  1. iPad app still didn’t show many of the saved links. 2. ability to rename articles on iPad still wasn’t restored.I’ve posted the message into their forum. They did not show my comment on their forum( I would name it censorship, not moderation), but a few days ago I’ve received an email, recommending “try logging out of the app on your iPad, and back in again.” Their suggestion helped,  but I don’t understand, why it is not posted as a recommendation on their support site.So I decided to try InstAPaper on my iPad, Previously I’ve used it for Kindle. I never considered it before on iPad, because there were no free demo and I was very satisfied with RIL free and then RIL Pro. Currently InstAPaper cost $3, so the price is not an issue.I’ve checked that it has most of features that I am using(e.g. renaming, folders) and I am quite happy with it now. Actually I am using Pocket (or RIL free) for old bookmarks( I have 1000+ stored on my iPad) and for new bookmarks I am using InstAPaper.Having a solid experience with RIL/Pocket I’ve created a list of suggestions to Marco Arment to implement.1. Some pages stored in InstAPaper have removed essential sections of the text. E.g in many blogs comments are not stored in  InstAPaper. Some pages lost almost all of important links (e.g. http://www.lib.rus.ec/a/32416 -sorry, in Russian). RIL/Pocket has 2 modes to store offline- Web view and Article view. Web View includes all links/images of the original page, but it’s very reliable. Article view suppose to strip unrelated information, but often corrupts the content. I prefer to use offline Web view.InstAPaper should also support offline Web view, in case if stripped view removes important part of content.2.  Black full screen Saving on iPad Safari is very annoying. After user pressed a bookmark, the saving has some delay and then for a few seconds prevents from reading the text.Would be better to show as message on the top part(as in Pocket ). I am surprised, that  a full screen popup was  implemented recently as a desired feature. 3.There are no comments allowed on http://blog.instapaper.com/. I would prefer to post some of these notes as comments on http://blog.instapaper.com/ rather than write them in my blog and then send link to Marco.(I found recommendation how to add support of comments on tumblr at http://www.tumblr.com/help, but then realized that Marko was the lead developer ofTumblr.)4. Also there is no support forum. I understand that maintenance of the forum ican be a hassle, but stackexchange fSome time ago I’ve described the issues that I’ve had since a new version of Read It Later, named Pocket, was introduced.I’ve waited with hope for a new upgrade, but I had a huge disappointment with the latest version 16 June 2012. It didn’t fixed any of the two major problems, that I  experienced since new Pocket was introduced- orums can be referred on  http://www.instapaper.com/main/support page, i.e.http://webapps.stackexchange.com/search?q=Instapaper  or http://apple.stackexchange.com/search?q=Instapaper 5. Tags are more convenient than folders. i.e. an ability for the same article to have more than one tag. Also creating of new folders is not supported offline, which is an annoying limitation.6. I would like to have a narrow list - additionally to existing list modes have a subject only list or subject+site list to show more list items on a screen.7. Limit of 500 offline articles sounds quite big, but my RIL list exceeded 1000, so it could be a issue in the future.8. Search button on iPad version is visible, but doesn’t work- it forces to buy Premium subscription. I think, that it’s not correct. If the button in a paid version is visible and enabled, it should  provide  a working functionality, e.g. search in article names only. And leave full-text search for the premium support.9..Copy URL is an important operation and deserves to be in a first level of Action menu, rather than in Share sub-menu.I’ve also have comment re post http://www.marco.org/2011/04/28/removed-instapaper-free. Marco Arment  explained, why he doesn’t provide free version of Instapaper.  I believe that he is loosing essential part of his customers. When I decided which of iPad application to choose, I’ve selected RIL, because I was able to play with free version, and I liked it. I didn’t have a chance to compare RIL and InstAPaper on iPad, so I’ve bought  RIL pro. For a user there is no point to pay even $3 , if there are similar free product, that user can try and see, is it suitable for him/her.I’ve also played with Readability. It doesn’t have folders or tags(which is very important for me), but nicely supports full text search

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  • Tyrus 1.1

    - by Pavel Bucek
    It might seem like there is not much time passed since Tyrus 1.0 (Java API for WebSocket reference implementation) release, but the fact is it was frozen several weeks before going public and development in the trunk continued. Tyrus 1.1 brings some new features and improvements: client-side proxy support simple command line client various stability/performance fixes (see below for complete list) Individual blog posts about highlighted features will follow, same as related user guide chapters.. stay tuned! Tyrus 1.1 is already integrated in Glassfish trunk - you can download nightly build or upgrade to newer Tyrus manually (replace all Tyrus jars; I know this is not very user friendly, so I'll try to come up with some better solution or at least simple guide). Complete list of bugfixes/improvements: TYRUS-180 TYRUS-176 TYRUS-192 TYRUS-186 TYRUS-191 TYRUS-187 TYRUS-172 TYRUS-194 TYRUS-179 TYRUS-178 TYRUS-200 TYRUS-177 TYRUS-181 TYRUS-203 TYRUS-205 TYRUS-198 TYRUS-202 TYRUS-188 TYRUS-149 Related links: https://tyrus.java.net https://java.net/jira/browse/TYRUS/

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  • Exalytics Disaster Recovery

    - by Saresh
    Q:Where can you find more information about Exalytics Disaster Recovery? Ans: Exalytics Disaster Recovery: http://docs.oracle.com/cd/E41246_01/bi.1/e39709/admin_dr.htm#BABCFGEC Note 1568360.1 -Oracle Exalytics Deployment Guide (Download the whitepaper attached to the Note) OBIEE http://docs.oracle.com/cd/E28280_01/bi.1111/e10541/backup.htm#CHDFEIGF Note 1316073.1 - OBIEE 11g: Recommended Strategies For Disaster Recovery or Backup Oracle Hyperion EPM http://docs.oracle.com/cd/E17236_01/epm.1112/epm_high_avail_11121.pdf (Though this is for Hyperion EPM 11.1.2.1, it is applicable to 11.1.2.2 as well) TimesTen: http://docs.oracle.com/cd/E21901_01/doc/timesten.1122/e21632/migrate.htmhttp://docs.oracle.com/cd/E21901_01/doc/timesten.1122/e21635/standbycache.htm#CBAJDJBD EPM Disaster Recovery : http://www.oracle.com/technetwork/middleware/bi-foundation/epm-dr-best-practice-130229.ppt Oracle® Enterprise Performance Management System Backup and Recovery Guide :http://docs.oracle.com/cd/E17236_01/epm.1112/epm_backup_recovery_1112200.pdf

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  • Keep a programming language backwards compatible vs. fixing its flaws

    - by Radu Murzea
    First, some context (stuff that most of you know anyway): Every popular programming language has a clear evolution, most of the time marked by its version: you have Java 5, 6, 7 etc., PHP 5.1, 5.2, 5.3 etc. Releasing a new version makes new APIs available, fixes bugs, adds new features, new frameworks etc. So all in all: it's good. But what about the language's (or platform's) problems? If and when there's something wrong in a language, developers either avoid it (if they can) or they learn to live with it. Now, the developers of those languages get a lot of feedback from the programmers that use them. So it kind of makes sense that, as time (and version numbers) goes by, the problems in those languages will slowly but surely go away. Well, not really. Why? Backwards compatibility, that's why. But why is this so? Read below for a more concrete situation. The best way I can explain my question is to use PHP as an example: PHP is loved thousands of people and hated by just as many thousands. All languages have flaws, but apparently PHP is special. Check out this blog post. It has a very long list of so called flaws in PHP. Now, I'm not a PHP developer (not yet), but I read through all of it and I'm sure that a big chunk of that list are indeed real issues. (Not all of it, since it's potentially subjective). Now, if I was one of the guys who actively develops PHP, I would surely want to fix those problems, one by one. However, if I do that, then code that relies on a particular behaviour of the language will break if it runs on the new version. Summing it up in 2 words: backwards compatibility. What I don't understand is: why should I keep PHP backwards compatible? If I release PHP version 8 with all those problems fixed, can't I just put a big warning on it saying: "Don't run old code on this version !"? There is a thing called deprecation. We had it for years and it works. In the context of PHP: look at how these days people actively discourage the use of the mysql_* functions (and instead recommend mysqli_* and PDO). Deprecation works. We can use it. We should use it. If it works for functions, why shouldn't it work for entire languages? Let's say I (the developer of PHP) do this: Launch a new version of PHP (let's say 8) with all of those flaws fixed New projects will start using that version, since it's much better, clearer, more secure etc. However, in order not to abandon older versions of PHP, I keep releasing updates to it, fixing security issues, bugs etc. This makes sense for reasons that I'm not listing here. It's common practice: look for example at how Oracle kept updating version 5.1.x of MySQL, even though it mostly focused on version 5.5.x. After about 3 or 4 years, I stop updating old versions of PHP and leave them to die. This is fine, since in those 3 or 4 years, most projects will have switched to PHP 8 anyway. My question is: Do all these steps make sense? Would it be so hard to do? If it can be done, then why isn't it done? Yes, the downside is that you break backwards compatibility. But isn't that a price worth paying ? As an upside, in 3 or 4 years you'll have a language that has 90 % of its problems fixed.... a language much more pleasant to work with. Its name will ensure its popularity. EDIT: OK, so I didn't expressed myself correctly when I said that in 3 or 4 years people will move to the hypothetical PHP 8. What I meant was: in 3 or 4 years, people will use PHP 8 if they start a new project.

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  • Oracle's Business Analytics Strategy Webcast

    - by Rob Reynolds
    Join Mark Hurd and Balaji Yelamanchili as they unveil the latest advances in Oracle’s strategy for placing analytics into the hands of every one of your decision-makers—so that they can see more, think smarter, and act faster. Learn about the latest developments in business intelligence technology and applications, advanced analytics, performance management applications, and engineered systems. You’ll find out how you can harness the exploding volumes of data being generated inside your organization—and beyond the firewall—to: Deliver real-time intelligence to your mobile workforce globally Forecast and plan at the speed of business Accelerate your financial close and reporting process Discover how Oracle business analytics can change the way you do business. Register today for this on demand event.

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  • Erlang web frameworks survey

    - by Zachary K
    (Inspired by similar question on Haskel) There are several web frameworks for Erlang like Nitrogen, Chicago Boss, and Zotonic, and a few more. In what aspects do they differ from each other? For example: features (e.g. server only, or also client scripting, easy support for different kinds of database) maturity (e.g. stability, documentation quality) scalability (e.g. performance, handy abstraction) main targets Also, what are examples of real-world sites / web apps using these frameworks? EDIT: Starting a bounty in hopes that it will get some conversation going

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  • 12.04 Ambiance dark side bar issue when clicking folder on desktop

    - by Lou Crittenden
    Concerning an updated custom ambiance theme: why is there no dark side bar when I click on a folder, like the home folder icon on the desktop, but the theme works as planned when I type nautilus in the terminal to open the home folder or when opening a folder up as root? Permissions issue perhaps? Note: I am using Cinnamon instead of Unity and I noticed it uses the Nemo file manager instead of Nautilus and I suspected that it was causing me the grief. I uninstalled it and now am using Nautilus only as the file manager. I found this out when I typed: sudo killall nemo and the problem went away. I'll see how this goes (and hopefully cinnamon doesn't care about it...) Has anyone else had any issues with this?

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  • Printing takes forever and gives pixelated prints

    - by kelvinsong
    I have a Brother HL-3070CW printer, which has some serious issues. Printing takes an abnormally long time, and if the file has anything more than text in it, it becomes horribly aliased and pixelated. The printer also sometimes complains about running out of memory. This problem has appeared on and off throughout various Ubuntu releases, and can sometimes be worked around by saving a file in Postscript through Evince, and printing the PS file in Evince. I tried to install drivers from the Brother website, but it gives an error "dependency not satisfiable: hl3070cwlpr" Help, I'm wasting a huge amount of paper and ink(not to mention time) reprinting pages over and over again in trial and error.

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  • Game engine design: Multiplayer and listen servers

    - by jarx
    My game engine right now consists of a working singleplayer part. I'm now starting to think about how to do the multiplayer part. I have found out that many games actually don't have a real singleplayer mode, but when playing alone you are actually hosting a local server as well, and almost everything runs as if you were in multiplayer (except that the data packets can be passed over an alternate route for better performance) My engine would need major refactoring to adapt to this model. There would be three possible modes: Dedicated client, Dedicated server and Client-Server (listen mode) * How often is the listen-server model used in the gaming industry? * What are the (dis)advantages of it? * What other options do I have?

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  • Heading in the Right Direction: Garmin Exadata adoption

    - by Javier Puerta
    A pioneer in global positioning system (GPS) navigation, Garmin International Inc. has been adopting Exadata to support the infrastructure that powered the company’s Oracle Advanced Supply Chain Planning, but also the company’s fitness segment, which provides customers with an online platform to store, retrieve, and interact with data captured using Garmin fitness products. The environment, which is built on an Oracle Database, processes approximately 40 million queries per week. Prior to using Oracle Exadata Database Machine, as the online offering grew in popularity, it began to face reliability issues that had negatively impacted the customer experience. We included the video testimonial in a previous post. Now you can find the a complete set of materials about this customer story Garmin Customer Reference Garmin video testimonial:  Garmin Consolidates on Exadata for 50% Performance Boost Profit Magazine article:  Heading in the Right Direction

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  • Touchpad in Sony Vaio E14 - cannot click with a finger and drag with another - Ubuntu 12.04

    - by Nabeel
    I had the following issues with my Sony Vaio E14115's touchpad on Ubuntu 12.04: Right click not working Vertical scrolling not working Then I followed these steps to fix it: Downloaded a patch for Psmouse sudo apt-get install dkms build-essential cd ~/Desktop tar jxvf psmouse-3.2.0-24-generic-pae.tar.bz2 sudo mv psmouse-3.2.0-24-generic-pae /usr/src cd /usr/src sudo chmod -R a+rx psmouse-3.2.0-24-generic-pae sudo dkms add -m psmouse -v 3.2.0-24-generic-pae sudo dkms build -m psmouse -v 3.2.0-24-generic-pae sudo dkms install -m psmouse -v 3.2.0-24-generic-pae sudo modprobe -r psmouse sudo modprobe psmouse This fixed me the problems of Rightclick and vertical scrolling. But I still have an issue of not able to click and drag ie Clicking the leftmouse button and dragging with another finger. It doesn't move! Maybe it doesn't detect the 2nd finger. When I check the capabilities of my Synaptics touchpad by using xinput list-props "SynPS/2 Synaptics TouchPad"|grep Capabilities I get the following output: Synaptics Capabilities (304): 1, 1, 1, 1, 1, 1, 1 Please help me out.

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