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  • Calculate area under FFT graph in Matlab

    - by lytheone
    Hiya, Currently I did a FFT of a set of data which gives me a plot with frequency at x axis and amplitude at y axis. I would like to calculate out the area under graph to give me energy. I am not sure how to determinate the area because i am without the equation and also i only want a certain area of the plot rather than whole area under the plot. Is there a way i can do it?

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  • Freeradius problem

    - by IceAgeBosna
    Hello my Dear friends! Firstly sorry to my English I am not an expert:) I am using freeradius 2.1.7 and MySQL instaled on Ubuntu server 9.04. Now, the perl script called: "auth.pl" is verifying usersnames, passwords, and updating information. The problem is that on a certain number of connections simply "NAS" - Mikrotik until the next reboot users can not connect. If you need i cann show you auth.pl script

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  • How to cancel a touch sequence

    - by Alex
    I have an UIImage view that responds to touch events. I want to cancel the touch sequence if the touch goes outside of certain bounds. How can I do that? I know that I can inspect the coordinates of the touch object, what I don't know is how to cancel the sequence. I don't see any event in the API that allows for that.

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  • mod_rewrite with anchor link

    - by Graham
    Hi, thanks for looking. I know you can't redirect anchor URLs to another page, but is it possible to redirect a URL to only a single anchor? So http://www.example.com/video/{title} always gets sent to http://www.example.com/video.php?title={title}#player The only thing that changes is the title, anchor is always the same... I need to redirect to a certain slide on a coda slider

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  • Simulating a missing gem in Ruby unit tests

    - by ktex
    Is there any way to simulate the absence of a gem for certain unit tests, short of actually uninstalling and then reinstalling the gem during testing? I am writing a command line utility, and want to make sure that my tests cover cases where a user may not have all of the gems that I support. For instance, I am using fsevents — a Leopard-specific package for monitoring filesystem events — that will never be present on other systems, as well as a growl gem that's purely optional.

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  • Prevent delegate method from being called too often

    - by Lord Zsolt
    How would you add a delay between certain method being called? This is my code that I want to only trigger 30 times per second: - (void) scrollViewDidScroll: (UIScrollView*)scrollView { [self performSelector:@selector(needsDisplay) withObject:nil afterDelay:0.033]; } - (void) needsDisplay { [captureView setNeedsDisplay]; } If I leave it like this, it only gets called after the user stopped scrolling. What I want to do is call the method when the user is scrolling, but with a delay of 33 milliseconds between each call.

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  • How do you replace content without losing focus?

    - by Ryan
    For example: <input type="text" name="test" onChange="document.formname.test.value=.document.formname.test.value.replace('something','something else')" /> The replace function works but it loses focus on every change How do you make it not lose focus? What I'm trying to do is make it so that certain text is immediately replaced with new text when its typed but you can continue typing

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  • Set element style to the :hover style using jQuery

    - by Baddie
    Is it possible (using jQuery or otherwise) to set the style of a certain element to the :hover style defined in a stylesheet? .regStyle { background-color: #000; } .regStyle:hover { background-color: #fff; } Trying it out $("#differentButton").click(function(){ // this doesn't work $("#someElement").addClass("regStyle:hover").remove("regStyle"); });

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  • applying apply() to deeply embeded list elements only

    - by romunov
    I would like to apply my function to only elements that are deeper in the list structure. For example, I would like to apply a certain function to list elements of second order only. Is this feasible with apply()? > str(l) List of 3 $ :List of 2 ..$ : num 5 ..$ : num 10 $ :List of 2 ..$ : num 15 ..$ : num 20 $ :List of 2 ..$ : num 25 ..$ : num 30

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  • Using NavigationService without XAML files

    - by UnclePaul
    I'm trying to create some pages in my Windows Phone application without the use of any XAML. Everything is working, however, I'm failing to use NavigationService/ Journal with this approach and all my attempts to utilize it are answered by the usual "No XAML was found at the location {0}'" response. Yes, I can add an almost empty XAML file to get everything working, but is this kind of boiler plate code really necessary? Is it maybe possible to use the UriMapping to map certain Uris to specific classes instead of *.xaml files?

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  • Passing parameter to base class constructor or using instance variable?

    - by deamon
    All classes derived from a certain base class have to define an attribute called "path". In the sense of duck typing I could rely upon definition in the subclasses: class Base: pass # no "path" variable here def Sub(Base): def __init__(self): self.path = "something/" Another possiblity would be to use the base class constructor: class Base: def __init__(self, path): self.path = path def Sub(Base): def __init__(self): super().__init__("something/") What would you prefer and why? Is there a better way?

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  • Check for active connection in NHibernate

    - by Dofs
    I have a system with a few different databases, and I would like to check if a certain database is down, and if so display a message to the user. Is it possible in NHibernate to check if there is an active connection to the database, without having to request data and then catch the exception?

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  • Removing elements from C++ std::vector

    - by user219847
    What is the proper way to remove elements from a C++ vector while iterating through it? I am iterating over an array and want to remove some elements that match a certain condition. I've been told that it's a bad thing to modify it during traversal.

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  • How to name application specific fields in couchdb

    - by karlthorwald
    I tried adding my own fields with names like _myappvar and _myotherappvar to documents to distinguish them from data fields. At first it worked but at certain points futon complains. What is the right way to go? I am using couchdb 0.9.0, this may be old, butI will not be able to upgrade in this iteration.

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  • Twitter4J - Looking up profile details without logging in

    - by wvd
    Hello all, I've been using Twitter4J for a quite a while now, but I can't seem to find this particular feature. I want to be able to search on a name, and when the certain user is on twitter, I want to retrieve basic information such as tweets, followers (like you can access via http) - but how to do is in Twitter4J? Neither the code examples or the source could help me. Thanks, William van Doorn

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  • Why enabling transparency can lead to cliping problems ?

    - by Amokrane
    Hi, I'm working on a 3D graphical application in Java using the Java 3D API. I noticed that every time I was dealing with transparency, all I got in return were some clipping problems. Some parts of the scene weren't displayed properly. It might seem obvious that this would happen in a certain way but I'm looking for a logical explanation, why is this happening? Thank you

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  • jquery radio button group problem

    - by user198937
    Hi, I have a radio group which is validated for required. It works fine except when in certain cases I need to disabled first radio button leaving user to select one from remaining. Even in this case radios are validated but error message is not displayed. I believe its due to error message's association with first radio. Disabling other radio except first works fine too. Is there way around?

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  • Pagination on blog content type in eZ Publish

    - by foosadi
    Hi, Im not sure if I have missed anything but I am trying to achieve pagination on blog posts within my blog. Is there a setting somewhere to show a certain number of blog posts per page by default? Or am I going to need to add that functionallity myself? Thanks.

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