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  • Error occurs while using SPADE method in R

    - by Yuwon Lee
    I'm currently mining sequence patterns using SPADE algorithm in R. SPADE is included in "arulesSequence" package of R. I'm running R on my CentOS 6.3 64bit. For an exercise, I've tried an example presented in http://en.wikibooks.org/wiki/Data_Mining_Algorithms_In_R/Sequence_Mining/SPADE When I tried to do "cspade(x, parameter = list(support = 0.4), control = list(verbose = TRUE))" R says: parameter specification: support : 0.4 maxsize : 10 maxlen : 10 algorithmic control: bfstype : FALSE verbose : TRUE summary : FALSE preprocessing ... 1 partition(s), 0 MB [0.096s] mining transactions ... 0 MB [0.066s] reading sequences ...Error in asMethod(object) : 's' is not an integer vector When I try to run SPADE on my Window 7 32bit, it runs well without any error. Does anybody know why such errors occur?

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  • implict type cast in generic method

    - by bitbonk
    why do I get a compiler error in the following code stating: Cannot implicty convert type SpecialNode to T even though T must derive from NodeBase as I defined in the where clause and even though SpecialNode actually derived from NodeBase? public static T GetNode<T>() where T : NodeBase { if (typeof(T) == typeof(SpecialNode)) { return ThisStaticClass.MySpecialNode; // <-- compiler error } if (typeof(T) == typeof(OtherSpecialNode)) { return ThisStaticClass.MyOtherSpecialNode; // <-- compiler error } ... return default(T); }

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  • Secure method for linking to image files uploaded via custom CMS

    - by letseatfood
    How does one provide a direct URL for an image file (JPEG) that is secure? For example, if a PHP script writes uploaded images to directory http://www.somehost.com/images, is it okay to provide http://www.somehost.com/images/someimage.jpg as the URL, or is there a more secure way to do this? Should I look into something like the permalink feature that is a part of Wordpress? I am not sure if that is related. The main reason I ask is that I have a custom PHP/MySQL CMS for managing images. I would like for the client to be able to copy a link to the image they want and then include it in a TinyMCE text editor for inserting the image in their website. Thanks!

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  • what does this ADO OPEN Method do?

    - by every_answer_gets_a_point
    in plain english can you explain to me what happens here: rs.Open "batchinfo", oConn, adOpenKeyset, adLockOptimistic, adCmdTable what i need to do is to be able to insert values into a table called batchinfo. would this be the best way to do an OPEN? the only thing i would be doing is inserting values.

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  • Passing a bool condition to method which I can invoke when I need

    - by dotnetdev
    Hi, I need to pass in a predicate which I can invoke whenever I want (just like a delegate). I am trying to do something like this (I thought Predicate delegate would meet my needs): MyMethod(Predicate,string pred); Called like: MyMethod(s = s.Length 5); I want to write the condition inline BUT invoke it when I want, just like a delegate. How could I do this? Thanks

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  • Can I use a method as a lambda?

    - by NewAlexandria
    I have an interface the defines a group of conditions. it is one of several such interfaces that will live with other models. These conditions will be called by a message queue handler to determine completeness of an alert. All the alert calls will be the same, and so I seek to DRY up the enqueue calls a bit, by abstracting the the conditions into their own methods (i question if methods is the right technique). I think that by doing this I will be able to test each of these conditions. class Loan module AlertTriggers def self.included(base) base.extend LifecycleScopeEnqueues # this isn't right Loan::AlertTriggers::LifecycleScopeEnqueues.instance_method.each do |cond| class << self def self.cond ::AlertHandler.enqueue_alerts( {:trigger => Loan.new}, cond ) end end end end end module LifecycleScopeEnqueues def student_awaiting_cosigner lambda { |interval, send_limit, excluding| excluding ||= '' Loan.awaiting_cosigner. where('loans.id not in (?)', excluding.map(&:id) ). joins(:petitions). where('petitions.updated_at > ?', interval.days.ago). where('petitions.updated_at <= ?', send_limit.days.ago) } end end I've considered alternatives, where each of these methods act like a scope. Down that road, I'm not sure how to have AlertHandler be the source of interval, send_limit, and excluding, which it passes to the block/proc when calling it.

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  • saving an image object in sql server database from action method

    - by user3532152
    [HttpPost] public void Test(HttpPostedFileBase file) { UsersContext db = new UsersContext(); byte[] image = new byte[file.ContentLength]; file.InputStream.Read(image, 0, image.Length); CrimeReport i = new CrimeReport { ImageId=1, ImageName="Anjli",ImageContent = image, Active=true }; db.CrimeReports.Add(i); db.SaveChanges(); } I am getting an exception on db.CrimeReports.Add(i);

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  • Args error in main method for client-server program

    - by socket
    Hi I have a client and server program, all the coding is done and compiles, the client has a GUI and the server is command line. The program uses sockets. But when I run the client to connect to the server it keeps coming with the error message: "Usage: TodoClient []", rather than connecting to the server and starting up. This is where the problem lies: public static void main(String[] args) { TodoClient client; if (args.length > 2 || args.length == 0) { System.err.println("Usage: TodoClient <host> [<port>]"); } else if (args.length == 1) { client = new TodoClient(args[0], DEFAULT_PORT); } else { client = new TodoClient(args[0], Integer.parseInt(args[1])); } } Thank You

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  • JavaScript return method

    - by user1314034
    I'am new in javascript. I can't understand why the function returns T1 object (not just string 'hi') in the following example. function T1(){ return 'hi'; } function T(){ return new T1(); } T(); output: T1 And returns function in the following example function T1(){ return function(){ return 'hi'; } } function T(){ return new T1(); } T(); output: function (){ return 'hi' } Please explain this rethult. Thank you)

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  • Reload Method or Object in IDLE

    - by GSto
    when using idle, I know you can reload a module if it's changed like this: import foo reload(foo) if I only import part of a module, is there a way to reload it in a similar matter? from foo import bar

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  • correct method "get next value"

    - by kapec
    Hello!! i need your help! this is my code, it not so good as i wander - it is not working. i have not idea anymore. </code>// need to get next parameter static double getParametr(){ Scanner scanner = new Scanner(System.in); param = scanner.nextDouble(); return param; } .......... ................ if (i==1){ System.out.println("vvedite storoni pryamougolnika: "); Shape parA = new Rectangle(); parA.a = Shape.getParametr(); --- this is ok double aa = parA.a; Shape parB = new Rectangle(); parB.b = Shape.getParametr(); ------ this is no work!!! double bb = parB.b; Rectangle rec = new Rectangle(aa, bb); arrayFigur[i] = rec.area(); } how fix mistake?

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  • Javascript jQuery .click() callback references local variable from the calling method instead of cop

    - by Eric Freese
    The following jQuery Javascript code is included on an otherwise empty page. $(function() { for (var i = 0; i < 10; i++) { element = $('<div>' + i + '</div>'); element.click(function() { alert(i); }); $('body').append(element); } }); The desired behavior is that this code should generate 10 div elements numbered from 0 to 9. When you click on a div element, an alert popup will show the number of the div element you clicked on (i.e. if a user clicks on the div element labeled '4', the alert popup should show the number 4). The alert popup instead shows the number 10 regardless of which div element is clicked on. How can I modify this code to make it behave in the desired way?

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  • alternative for .click() method in firefox

    - by script programmer
    I have a href from that i am giving out a popup , and i want to activate this on my body overload . I am using "document.getElementbyId("myelement").click()" this is working fine in IE but FireFox is not supporting it. And i know that .click() will not be taken by firefox , but i dont have any other way to do it. Can u please suggest me with a workaround that will be accepted by IE as well as FF. Thanks in advance.

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  • Issue in alternate Row color using each() method of JQuery

    - by user1323981
    I have a table as under <table > <tr> <th scope="col">EmpId</th><th scope="col">EmpName</th> </tr> <tr> <td>1</td><td>ABC</td> </tr> <tr> <td>2</td><td>DEF</td> </tr> </table> I want to set the alternate row color of only the "td" elements of the table and not "th" by using only each() function. I have tried with <style type="text/css"> tr.even { background-color: green; } tr.odd { background-color: yellow; } </style> $(document).ready(function () { $('table > tbody').each(function () { $('tr:odd', this).addClass('odd').removeClass('even'); $('tr:even', this).addClass('even').removeClass('odd'); }); }); Though this works but it accepts also "th" element. How to avoid that? Please help Thanks

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  • error on oncreate() method

    - by user1644081
    I am begginer in Android App and using Java as when I add this code : GCMRegistrar.checkDevice(this); GCMRegistrar.checkManifest(this); final String regId = GCMRegistrar.getRegistrationId(this); if (regId.equals("")) { GCMRegistrar.register(this, SENDER_ID); } else { Log.v(TAG, "Already registered"); } I had error on : SENDER_ID Log TAG the error "cannot be resolved to available "

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  • Controlling access to method's in C#

    - by user460103
    Is there a way to control access to methods to certain roles in .net. Like class A { //should only be called by Admins** public void Method1() { } //should only be called by Admins and PM's** public void Method2() { } } I'm using windows authentication only for retrieving user names and nothing more.User roles are maintained in a different application. I think it's possible through attributes but I'm not really sure how

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  • Is this method thread safe?

    - by user
    Are these methods getNewId() & fetchIdsInReserve() thread safe ? public final class IdManager { private static final int NO_OF_USERIDS_TO_KEEP_IN_RESERVE = 200; private static final AtomicInteger regstrdUserIdsCount_Cached = new AtomicInteger(100); private static int noOfUserIdsInReserveCurrently = 0; public static int getNewId(){ synchronized(IdManager.class){ if (noOfUserIdsInReserveCurrently <= 20) fetchIdsInReserve(); noOfUserIdsInReserveCurrently--; } return regstrdUserIdsCount_Cached.incrementAndGet(); } private static synchronized void fetchIdsInReserve(){ int reservedInDBTill = DBCountersReader.readCounterFromDB(....); // read column from DB if (noOfUserIdsInReserveCurrently + regstrdUserIdsCount_Cached.get() != reservedInDBTill) throw new Exception("Unreserved ids alloted by app before reserving from DB"); if (DBUpdater.incrementCounter(....)) //if write back to DB is successful noOfUserIdsInReserveCurrently += NO_OF_USERIDS_TO_KEEP_IN_RESERVE; } }

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  • Confusing calling method in Java

    - by vBx
    class Parent { private void method1() { System.out.println("Parent's method1()"); } public void method2() { System.out.println("Parent's method2()"); method1(); } } class Child extends Parent { public void method1() { System.out.println("Child's method1()"); } } class test { public static void main(String args[]) { Parent p = new Child(); p.method2(); } } I'm confuse why does in Parent::method2() when invoking method1() it will cal Parents method1() and not Childs method1 ? I see that this happens only when method1() is private? Can someone explain me why ? Thanks you.

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