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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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Formatting Decimal places in R
I have a number, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'db'
I want to begin writing queries in MySQL.
10 Answers
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Simpler way to create dictionary of separate variables?
I would like to be able to get the name of a variable as a string but I don't know if Python has that much introspection capabilities. Something like:
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How can I post an array of string to ASP.NET MVC Controller without a form?
I am creating a small app to teach myself ASP.NET MVC and JQuery, and one of the pages is a list of items in which some can be selected. Then I would like to press a button and send a List (or something equivalent) to my controller containing the ids of the items that were selected, using JQuery's P...
.gitignore exclude folder but include specific subfolder
I have the folder application/ which I add to the .gitignore . Inside the application/ folder is the folder application/language/gr . How can I include this folder?
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Calculate age given the birth date in the format YYYYMMDD
How can I calculate an age in years, given a birth date of format YYYYMMDD? Is it possible using the Date() function?
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How do I install PyCrypto on Windows?
I've read every other google source and SO thread, with nothing working.
20 Answers
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Easy way to list node modules I have npm linked?
I am looking for a command that will list the names of global modules that I have npm link 'd to local copies, also listing the local path.
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What is the purpose of a stack? Why do we need it?
So I am learning MSIL right now to learn to debug my C# .NET applications.
7 Answers
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