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  • Global image threshold in Matlab

    - by pascal_ghost
    When you use graythresh in Matlab it obtains a value that is a normalized between 0 to 1, so when you use a threshold for something else such as imextendedmax or im2bw how would you use graythresh? I guess you have to probably multiply it by something but what?

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  • C++ STL list vs set

    - by mokaschitta
    Hi, what of those two is faster for random insertions and deletions? I guess list, having the values as the keys as it is with sets seems to be attractive too though. Is performance similar for iterating over the whole container? Thanks!

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  • Why string.Replace("X","Y") works only when assigned to new string?

    - by Petr
    Hi, I guess it has to do something with string being a reference type but I dont get why simply string.Replace("X","Y") does not work? Why I need to do `string A=stringB.Replace("X","Y") I thought it is just a method to be done on specified instance? Thanks for explanation EDIT: Thank you so far. I extend my question Why "b+="FFF"works but the b.replace is not?

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  • Enable proper relative path in cron

    - by Webnet
    I have 2 servers that are on completely separate OS' and configurations. One properly accepts require_once '../file.php'; and the other doesn't, because it's relative to where the cron is loading I guess. How can I fix the 2nd location so that it's relative path is from the relative path of the file. I need this to work in 3 different environments (local, beta, and live) so I don't want to write a bunch of code on this page, I'd prefer a configuration adjustment if possible.

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  • check if a URI exists?

    - by noname
    How do I check if a URI exists with PHP? I guess it will return an error code and I can check it before I use file_get_contents, because if I use file_get_contents on a link that doesn't exist, it gives me an error.

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  • how do i consume net.tcp binding within web project?

    - by user1871124
    I'm working on a web application using mvc, we have already a service that does http binding, the client wants tcp binding for certain actions (not really sure why) but it's their requirement so i'm attempting to set up net.tcp binding, all references i am seeing to doing this involve a windows application and not a web application. I guess my question has 2 parts, first can you run httpbinding and net.tcp binding at the same time through the same service/project. secondly how would I consume the service through a webproject?

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  • handling large number

    - by klw
    Hello, this is actually an problem question from project euler site http://projecteuler.net/index.php?section=problems&id=3 Anyway I'm not out after the solution, but I probably guess you will know what my approach is. To my question now, how do I handle numbers exceeding unsigned int? Is there a mathematical approach for this, if so where can I read about it?

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  • quick java question

    - by mark
    hi, im currently learning stacks in java and have a quick question. what will the following code display if the stack is empty? my guess would be "true"? System.out.println(st.isEmpty());

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  • Business object and linq2SQL

    - by Overdose
    What is the optimal way to write the code which interacts with DB using linq2SQL? I need to add some business logic to the entities. So I guess there are two ways: Write some wrapper class. The main minus is that many fields are the same, so i don't feel it as DRY style. Add business logic methods to linq2sql entities(these classes are partial) directly ???

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  • How to access a (shadowed) global function in ruby.

    - by yngvedh
    Hi, I was wondering how to access a global function fn in ruby from a class which also defined a method fn. I have made a workaround by aliasing the function like so: def fn end class Bar alias global_fn fn def fn # how to access the global fn here without the alias global_fn end end I'm looking for something along the lines of c++'s :: to access global scope but I can't seem to locate any information about it. I guess I don't know specifically what I'm looking for.

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  • How to make a Single Executable VS 2010

    - by Uri
    I'm making a game using C++ and DirectX and it'd be nice to share my groups progress with other people by providing a single executable file instead of having to run a setup wizard. I've checked my Release and Debug folders but those executable don't work. The release .exe is something like 21KB which doesn't seem right. So I guess what I'm asking is how to make a single executable with all of the libraries and resource files included.

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  • In ruby on rails, is it possible to do a sum query with group by using the find_each batching?

    - by BarryOg
    I'm loading data from my database and I'm doing a sum calculation with a group by. ElectricityReading.sum(:electricity_value, :group => "electricity_timestamp", :having => ["electricity_timestamp = '2010-02-14 23:30:00'"]) My data sets are extremely large, 100k upwards so I was wondering if its possible to use the find_each to batch this to help with memory overhead. I can write the batching manually use limit and offset I guess but I'd like to avoid that if the code already exists.

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  • PHP: Prevent a function from returning value?

    - by Industrial
    Hi everybody, How could I make sure that the startProcess(); function is being called, but without halting the execution for myFunction(). I'll guess that there's a way to call a function and prevent it from returning it's value to thereby accomplishing this? Pseudo-code: function myFunction() { startProcess(); return $something; } function startProcess() { sleep(5); // Do stuff that user doesn't should have to wait for. }

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  • Is Pseudo typing in Erlang the way to get types?

    - by Zubair
    For example, to denote a String I could use: {string,"hjggjhhggJ"} and a list would be: {list, [1,2,3]} : I guess I have found that I am running into situations where I need types, for example to distinguish between strings and lists and I am not sure how to proceed. I do however want to use whatever technique I choose everywhere in my Erlang application for consistency, and not just for strings and lists. Any advice?

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