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  • Local Histogram Equalization with Matlab

    - by Mertie Pertie
    hi all Histogram equalization is simple with histeq function but when it comes local hist. eq., im supposed to use a neighbourhood and move it along the image matrix and do it locally at each iteration. I wonder how I can implement it with Matlab, is it possible if i use histeq for each neighbourhood or is there any other predefined m-function for this operation.

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  • facebook connect error

    - by coure06
    I am getting error but empty statusText, here is my code var ajaxUrl = 'https://graph.facebook.com/me?access_token=' + accessToken $.ajax({ url: ajaxUrl, dataType: 'json', success: function(user){ alert('h'); }, error: function(xhr, ajaxOptions, thrownError){ alert(xhr.statusText); } });

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  • Jquery hover with animation

    - by Brian
    anyone know how to stop a .hover happening again before the mouseout animation has finished? I have the following code which has 4 anchors. Once hovered over the anchor the related anchor slides in using animation. My problem is you hover out and in quickly, before the square has been set back to 0px it increases the slide distance. <body class="home"> <div id="container"> <a class="page-link homet" id="anim-1"></a> <a class="page-link about" id="anim-2"></a> <a class="page-link portfolio" id="anim-3"></a> <a class="page-link contacts" id="anim-4"></a> <div id="header"> <div id="logo"> </div> <ul id="navigation"> <li><a id="1"></a></li> <li><a id="2"></a></li> <li><a id="3"></a></li> <li><a id="4"></a></li> </ul> </div> <div id="main"> <div id="left-content"> </div> <div id="main-content"> </div> </div> </div> </body> </html> Jquery var cc = { displayAnim : function () { actionLink = $("#container #header #navigation li a"); movePosition = "0"; $("#container a.page-link").css({ position:"absolute", right: 0}); $(actionLink).hoverIntent( function() { circleToReveal = $(this).attr('id'); switch (circleToReveal) { case "1" : movePostion = "386" break; case "2" : moveposition = "514" break; case "3" : movePosition = "643" break; case "4" : movePosition = "400" break; default : movePosition = "772" }; /* console.log(movePosition); */ $("#container #anim-" +circleToReveal+ "").stop().animate({"right": "+="+ movePosition +"px"}, "slow"); }, function() { $("#container #anim-" +circleToReveal+ "").stop().animate({"right": "-="+ movePosition +"px"}, "slow"); } ); } }; $(window).load (function () { $("body").addClass('js'); $("a.pagelink").hide(); cc.displayAnim(); });

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  • MooTools event listener disappears after element.innerHTML is changed

    - by acoder
    Hi everyone, I am trying to achieve this task using MooTools. Description: I attached an event listener to "myButton" link. A click on this link initiates an AJAX request and updates "myDiv" content based on the response text. During this request a POST variable is being sent to "button.php", but it's not used at the moment.. (i wish to use it later) OK, as a result, "myDiv" gets exactly the same link with the same ID (myButton) + a random number, so that we could see that each click generates a new number. The problem: After the first click on "myButton", "myDiv" updates correctly, showing a random number. When I click "myButton" for the second time (this time in newly updated div), the div does not refresh anymore. Please note that I need "myButton" to be inside "myDiv", and "myDiv" must be updated (refreshed) after each click without having to refresh the entire page. Can somebody show me how to achieve this task based on this simplified code example? index.html <html> <head> <script type="text/javascript" src="mootools-1.2.4-core-nc.js"></script> <script> window.addEvent('domready', function() { $('myButton').addEvent('click', function(e) { e.stop(); var myRequest = new Request({ method: 'post', url: 'button.php', data: { action : 'test' }, onRequest: function() { $('myDiv').innerHTML = '<img src="images/loading.gif" />'; }, onComplete: function(response) { $('myDiv').innerHTML = response; } }); myRequest.send(); $('myButton').removeEvent('click'); }); }); </script> </head> <body> <div id="myDiv"> <a id="myButton" href="#">Button</a> </div> </body> </html> button.php <a id="myButton" href="#">Button</a> clicked <?php echo rand(1,100); ?>

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  • Advice on "Invalid Pointer Operation" when using complex records

    - by Xaz
    Env: Delphi 2007 <JustificationI tend to use complex records quite frequently as they offer almost all of the advantages of classes but with much simpler handling.</Justification Anyhoo, one particularly complex record I have just implemented is trashing memory (later leading to an "Invalid Pointer Operation" error). This is an example of the memory trashing code: sSignature := gProfiles.Profile[_stPrimary].Signature.Formatted(True); On the second time i call it i get "Invalid Pointer Operation" It works OK if i call it like this: AProfile := gProfiles.Profile[_stPrimary]; ASignature := AProfile.Signature; sSignature := ASignature.Formatted(True); Background Code: gProfiles: TProfiles; TProfiles = Record private FPrimaryProfileID: Integer; FCachedProfile: TProfile; ... public < much code removed > property Profile[ProfileType: TProfileType]: TProfile Read GetProfile; end; function TProfiles.GetProfile(ProfileType: TProfileType): TProfile; begin case ProfileType of _stPrimary : Result := ProfileByID(FPrimaryProfileID); ... end; end; function TProfiles.ProfileByID(iID: Integer): TProfile; begin <snip> if LoadProfileOfID(iID, FCachedProfile) then begin Result := FCachedProfile; end else ... end; TProfile = Record private ... public ... Signature: TSignature; ... end; TSignature = Record private public PlainTextFormat : string; HTMLFormat : string; // The text to insert into a message when using this profile function Formatted(bHTML: boolean): string; end; function TSignature.Formatted(bHTML: boolean): string; begin if bHTML then result := HTMLFormat else result := PlainTextFormat; < SNIP MUCH CODE > end; OK, so I have a record within a record within a record, which is approaching Inception level confusion and I'm the first to admit is not really a good model. Clearly i am going to have to restructure it. What I would like from you gurus is a better understanding of why it is trashing the memory (something to do with the string object that is created then freed...) so that i can avoid making these kinds of errors in future. Thanks

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  • match strings in python

    - by mesun
    Write a function, called constrainedMatchPair which takes three arguments: a tuple representing starting points for the first substring, a tuple representing starting points for the second substring, and the length of the first substring. The function should return a tuple of all members (call it n) of the first tuple for which there is an element in the second tuple (call it k) such that n+m+1 = k, where m is the length of the first substring. Complete the definition def constrainedMatchPair(firstMatch,secondMatch,length):

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  • How to access class member from bison action

    - by yodhevauhe
    I am calling yyparse from a member function. How to access the member variables/function from the bison action. I am currently doing as %{ #include "myclass.h" #include "parse.tab.hh" MyClass *ptr=NULL; void MyClass::evaluate(string expression) { ptr=this; yy_scan_string(expression.c_str()); yyparse(); } %} %% EXPR : EXPR PLUS EXPR { $$ = ptr->memberFunction("+",$1,$3); }

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  • Using $this when not in object context

    - by Ken
    I'm creating a function to show blog's. So I made a show blog function but it keeps giving "Using $this when not in object context" error Class Blog{ public function getLatestBlogsBig($cat = null){ $sqlString = "SELECT blog_id FROM jab_blog"; if($cat != null) $sqlString .= " WHERE blog_cat = " . $cat; $sqlString .= " ORDER BY blog_id DESC LIMIT 5"; $blog = mysql_query($sqlString); while($id = mysql_result($blog,"blog_id")){ $this->showBlog($id); //Error is on this line } } function showBlog($id,$small = false){ $sqlString = "SELECT blog_id FROM jab_blog WHERE blog_id=" . $id . ";"; $blog = mysql_query($sqlString); if($small = true){ echo "<ul>"; while($blogItem = mysql_fetch_array($blog)){ echo '<a href="' . $_SESSION['JAB_LINK'] . "blog/" . $blogItem['blog_id'] . "/" . SimpleUrl::toAscii($blogItem['blog_title']) .'">' . $blogItem['blog_title'] . '</a></li>'; } echo "</ul>"; }else{ while($blogItem = mysql_fetch_array($blog)){ ?> <div class="post"> <h2 class="title"><a href="<?php echo $_SESSION['JAB_LINK'] . "blog/" . $blogItem['blog_id'] . "/" . SimpleUrl::toAscii($blogItem['blog_title']);?>"><?php echo $blogItem['blog_title'];?></a></h2> <p class="meta"><span class="date">The date implement</span><span class="posted">Posted by <a href="#">Someone</a></span></p> <div style="clear: both;">&nbsp;</div> <div class="entry"> <?php echo $blogItem['blog_content'];?> </div> </div> <?php } } } }

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  • jquery - Getting the second level parent of an element

    - by j-man86
    I am trying to retrieve the parent of an element's parent (grandparent?). I want to find that grandparent, then find a tag in that element, then store that text as a variable to publish elsewhere on the page. I've been trying to use the parent() function but without success. Here's the code I tried: $('.mixPlayCell a').click( function() { var title = $(this).parent().get(0).parent().get(0).text(); alert(title); }); Thanks!

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  • Accessing property of object vs variable in javascript

    - by Samuel
    Why when I try to access a variable that don't exist, javascript throw an exception but when I try to access a property that don't exist in an object, javascript returns an undefined object? For example, this case returns an undefined object: function Foo(){ console.log(this.bar); } Foo(); But, in this other example, javascript throw an exception: function Foo(){ console.log(bar); } Foo(); ReferenceError: bar is not defined

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  • Jquery bind doesnt work on AJAX loaded HTML

    - by atif089
    Hi, This is my jquery code jQuery(document).ready (function() { // post $('.post').bind('mouseenter mouseleave', function() { $(this).filter('.btn').toggleClass('hidden'); }); }); It works great on a normal document. but When I load some HTM: (i.e some divs with .post attributes) using ajax and embed it into my DOM. The above code doesnt work with those divs.

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  • how to stop the setinterval() in javascript

    - by vakas
    i want to stop the setinterval at a specific condtion i am using this function Blink(targetId) { if($(targetId)) { if($(targetId).style.color=='red') $(targetId).style.color='black'; else $(targetId).style.color='red'; } else //STOP THE FUNCTION } setInterval(Blink,1000,'timer_'+sourceId);

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  • how to get the front window in wxwidgets

    - by Quincy
    In wxWidgets how to get the front most windows on mac? I have a document based application, so each window has a document in it, after change focus, I don't know how to get the front most window. I'm looking for a function like wxGetActiveWindow but the above function only works on windows and GTK, not mac

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  • C++, LHS state after exception is thrown

    - by aaa
    hi. I am learning C++ exceptions and I would like some clarification of the scenario: T function() throws(std::exception); ... T t = value; try { t = function(); } catch (...) {} if the exception is thrown, what is the state of variable t? unchanged or undefined?

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  • Dragging Custom Node in JavaFX

    - by Karussell
    I cannot get it working although I am very close to an acceptable solution. I can drag the Dock if it is only a rectangle. But if I add a node (e.g. an image) to this dock I am not able to get a working solution. Do you have a code snippet, link or other advices for me? Here is my code: public class Dock extends CustomNode { // initialize this with an 64x64 image of your choice // via ImageView { image: Image {..}} public var content: Node[]; public var width = 64; public var height = 64; public var xOffset: Number = 0; public var yOffset: Number = 0; var imgX: Number = 0; var imgY: Number = 0; var distX: Number; var distY: Number; public var rasterX = function (n: Number): Number { var MAX = 4 * 64; if (n < 0) { return 0 } else if (n > MAX) { return MAX } else return n } public var rasterY = rasterX; override protected function create(): Node { Group { // if we place the translate here then the whole dock will flicker //translateX: bind imgX; //translateY: bind imgY; content: [ Rectangle { // ... and here 'content' won't be dragged translateX: bind imgX; translateY: bind imgY; height: bind height width: bind width fill: Color.LIGHTGRAY strokeWidth: 4 stroke: Color.BLACK }, content] onMousePressed: function (e: MouseEvent): Void { xOffset = e.x; yOffset = e.y; // Calculate the distance of the mouse point from the image // top-left corner which will always come out as positive value distX = e.x - imgX; distY = e.y - imgY; } onMouseDragged: function (e: MouseEvent): Void { // Find out the new image postion by subtracting the distance // part from the mouse point. imgX = rasterX(e.x - distX); imgY = rasterY(e.y - distY); } } }

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  • jQuery resize width on firefox

    - by LM35DT
    I'm doing some experiments with jquery n widths for a liquid column and I'm not sure why it isn't working on firefox. It works fine on IE6,7,8 Chrome, Opera(sluggish). I found some articles about firefox not recognizing the .resize attribute but no explanation/solution =\ $(document).ready(function(){ $(midCol).width((window,$(window).width()) - 470) $(window).resize(function(){$(midCol).width((window,$(window).width()) - 470) }) });

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  • How can I hash a string to an int using c++?

    - by zebraman
    I have to write my own hash function. If I wanted to just make the simple hash function that maps each letter in the string to a numerical value (i.e. a=1, b=2, c=3, ...), is there a way I can perform this hash on a string without having to first convert it to a c-string to look at each individual char? Is there a more efficient way of hashing strings?

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  • Calling javascript method from from inside object

    - by John
    I am struggling with methods in JavaScript. obj = function(){ this.getMail = function getMail (){ } //Here I would like to run the get mail once but this.getMail() or getMail() wont work } var mail = new obj(); mail.getMail(); How do I make the method in a way that I can run it both inside the object and from the outside Thanks

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  • to set value parent page's frame from popup.

    - by cem
    I want to set label's value from popup.But label is in frame and I dont know how to achieve it from popup. From parent page,i get this label by following javascript function. But when I use this function in popup page, I cant find topframe.Do u have any solution about how to success it? if (window.parent.document.getElementById('lbl')) { window.parent.document.getElementById('lbl').innerText = sender.getSelectedItem().get_text(); } else { window.parent.frames['topFrame'].document.getElementById('lbl').innerText = sender.getSelectedItem().get_text(); }

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  • in Python find number of same elements in 2 lists

    - by John
    Hi, In Python if I have 2 lists say: l1 = ['a', 'b', 'c', 'd'] l2 = ['c', 'd', 'e'] is there a way to find out how many elements they have the same. In the case about it would be 2 (c and d) I know I could just do a nested loop but is there not a built in function like in php with the array_intersect function Thanks

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  • How to make PHP Curl request not to wait?

    - by understack
    I've a PHP function which fetches a Curl request. This request sometimes take longer time than expected and hence my php function takes longer to return. In my particular case, output of curl request is not important. So is it possible with curl just to place a request and proceed without waiting for curl_exec() to finish?

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  • Need help with jquery ui slider

    - by Gandalf StormCrow
    I'm trying to create this slider http://jqueryui.com/demos/slider/#rangemax Is it possible to parametrize the max value? For ex: $("#slider-range-max").slider({ range: "max", min: 1, max: maxValue, value: 2, slide: function(event, ui) { $("#amount").val(ui.value); } }); Is it possible to pass maxValue value, when I click on something ?After its been initialized? not on document ready function, after that?

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  • How to correct the objection about dymanic Object type by FlexPMD?

    - by sanjoy roy
    I have the code in one of my flex file used as labelFunction in a DataGrid. When I run the FlexPMD to do the code review , it generates objection about the dynamic type object used in method signature "public function getFormattedCreatedTime(item:Object, column:DataGridColumn):String", it suggests to use strongly type object. Does anyone how to rectify it? public function getFormattedCreatedTime(item:Object, column:DataGridColumn):String { var value:Date=item[column.dataField]; return dateFormatter.format(value); } ]] Thanks

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