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  • 2d convolution using python and numpy

    - by mikip
    Hi I am trying to perform a 2d convolution in python using numpy I have a 2d array as follows with kernel H_r for the rows and H_c for the columns data = np.zeros((nr, nc), dtype=np.float32) #fill array with some data here then convolve for r in range(nr): data[r,:] = np.convolve(data[r,:], H_r, 'same') for c in range(nc): data[:,c] = np.convolve(data[:,c], H_c, 'same') It does not produce the output that I was expecting, does this code look OK Thanks

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  • What version of mongodb was full $text query operator introduced?

    - by Marc Maxson
    Stupid question, right? But the official docs for 'text index' say: http://docs.mongodb.org/manual/core/index-text/ Text Indexes New in version 2.4. To perform queries that access the text index, use the $text query operator. Whereas if you click on the help for searching the index you created with the $text operator, it reads: http://docs.mongodb.org/manual/reference/operator/query/text/#op._S_text $text New in version 2.6. Seems to be 2.4 but still having problems wiht it.

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  • how to reverse the order of words in query or c#

    - by Ranjana
    i have stored in the database as location India,Tamilnadu,Chennai,Annanagar while i bind in the grid view it ll be displaying as 'India,Tamilnadu,Chennai,Annanagar' this format. but i need to be displayed as 'Annanagar,Chennai,Tamilnadu,India' in this format. how to perform this reverse order in query or in c#

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  • Check for opened Browser using WatiN

    - by SD
    I want to check if an IE is already opened or not If IE is opened so i.e. Goto("WWW.GOOGLE.COM"); else open new IE and goto Yahoo.com for example: br = new WatiN.Core.IE(@textBox1.Text); then when I press a button I want to check if IE is opened or not and perform the previous scenario.

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  • Overriding jQuery plugin methods, as default and for single instances

    - by Kilgore2k
    Hi, The basic question is: How do I perform a basic override of a plugin method without editing the original plugin file? Is it possible to create an override for a specific instance: Example: An rtf plugin uses: $('selector').wysiwyg('setContent',newContent); In order to display the rtf text as readonly I would like for the same method to be applied to a div instead of the body of the IFRAME I would like to overwrite the original 'setContent' with my own code, just for this one element. Thanks

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  • Circular shift operations in C++

    - by Elroy
    Left and right shift operators (<< and ) are already available in C++. However, I couldn't find out how I could perform circular shift or rotate operations. How can operations like "Rotate Left" and "Rotate Right" be performed? Rotating right twice here Initial --> 1000 0011 0100 0010 should result in: Final --> 1010 0000 1101 0000 An example would be helpful.

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  • Limiting the size of a python dictionary

    - by anthony
    I'd like to work with a dict in python, but limit the number of key/value pairs to X. In other words, if the dict is currently storing X key/value pairs and I perform an insertion, I would like one of the existing pairs to be dropped. It would be nice if it was the least recently inserted/accesses key but that's not completely necessary. If this exists in the standard library please save me some time and point it out!

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  • Problems with usually short solutions to test in a programming language

    - by sub
    I'm currently creating an experimental programming language for fun and educational purpose and in search for some tasks beyond the classical "Hello, World!"-program. I've already come up with these ideas: Print out the program's input Calculator Generate Prime numbers, Fibonacci series What other interesting programming problems do you have for me to test? It would be good if they required the language to solve a broad spectrum of task, take prime numbers for example: You need variables, increment them, divide them, perform actions under certain conditions, etc.

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  • ASP.Net (C#) & MSQL -or- PHP & MySQL for Performance?

    - by Mike Curry
    Money, Staff, Skill and preference to open source or commercial is neutral. Lets take the best of the best programmers (for arguments sake) and think about this: What will perform better overall: PHP & MySQL or ASP.Net & Microsoft SQL (I don't want biased answers, just looking for Performance, and Speed).

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  • background worker in asp.net

    - by vbNewbie
    I migrate my winforms crawler app to a asp.net web app and would like to know how to implement the background worker thread that I use for very long searches? Another posting mentioned asynchronous pages but I am not sure if this would work or how to apply it. The search function that would run can sometimes run for a few days and I would like the user to have the option to perform other functions still. Can this happen?

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  • XImage - how to resize?

    - by Ajan
    I've got an XImage retrieved by XShmGetImage function. How can I resize it? Is there any function in X11 libraries to perform this operation or I need to use external library?

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  • Can I pass a pointer to a superclass, but create a copy of the child?

    - by Alex
    I have a function that takes a pointer to a superclass and performs operations on it. However, at some point, the function must make a deep copy of the inputted object. Is there any way I can perform such a copy? It occurred to me to make the function a template function and simply have the user pass the type, but I hold out hope that C++ offers a more elegant solution.

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  • Perfom python unit tests via a web interface

    - by 47
    Is it possible to perform unittest tests via a web interface...and if so how? EDIT: For now I want the results...for the tests I want them to be automated...possibly every time I make a change to the code. Sorry I forgot to make this more clear

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  • Best way to package a class for use in another app?

    - by Brad Hein
    I've written an Android app wich various abstract classes that perform useful functions. These functions could be leveraged in other apps. I want to share a class module with another programmer, but I don't want to share the source code. I would like to share a .class file but I'm not sure how to do the following: Compile an Android .java file into .class What does the receiver of the .class file have to do to use that .class in their project? (using Eclipse environment) Thank you very much

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  • Alternatives of Datatable

    - by mavera
    In my web application, I have a dynamic query that returns huge data to datatable, and this query is often recalled with different parameters. So database is exhausted. I want to get all record with no parameters to an object, and perform queries (may be with linq) on this object. So database will not be exthausted. Which objects can be used instead of datatable?

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  • Can I write a module/filter that gets fired before the web app get's run in Tomcat?

    - by Blankman
    Can I write a module/filter that gets put into the processing pipleline in Tomcat BEFORE the web application even gets run? Something that I could turn on/off for each web application that tomcat is handling. is this possible? So basically it would be a re-usable filter that hooks into the web pipeline that could alter the requests behavior or perform/modify the requests. One example would be to log all ip's, or redirect based on the url, block the request, etc.

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