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Principal component analysis in Python

I'd like to use principal component analysis (PCA) for dimensionality reduction. Does numpy or scipy already have it, or do I have to roll my own using numpy.linalg.eigh ? ...
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How do I get the real .height() of a overflow: hidden or overflow: scroll div?

...ware of .height() and innerHeight() , but none of them does the job for me in this case. The thing is that in this case I have a div that is overflown width a overflow: scroll and the div has a fixed height. ...
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How do I send a JSON string in a POST request in Go

... now it have panics on playground. May be you shold fix or update something? – Altenrion Jan 4 '17 at 16:02 ...
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Git: Find the most recent common ancestor of two branches

... You are looking for git merge-base. Usage: $ git merge-base branch2 branch3 050dc022f3a65bdc78d97e2b1ac9b595a924c3f2 share | improve this answer ...
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C/C++ macro string concatenation

... add a comment  |  118 ...
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android splash screen sizes for ldpi,mdpi, hdpi, xhdpi displays ? - eg : 1024X768 pixels for ldpi

... fit for 4types of screens like ldpi, mdpi , hdpi, xhdpi . Can anyone tell me exact sizes in pixels for these screens so I can design in that size ? ...
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Why is there no SortedList in Java?

...edSet and SortedMap interfaces. Both belong to the Java Collections framework and provide a sorted way to access the elements. ...
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Is the 'override' keyword just a check for a overridden virtual method?

...11 is nothing more than a check to make sure that the function being implemented is the override ing of a virtual function in the base class. ...
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Default value of a type at Runtime [duplicate]

... I posted the same solution but I was unsure about how nullables were treated. It turns out nullables fall into the first branch but Activator.CreateInstance(typeof(int?)) actually returns null so it all works out. – Jo...
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Non-CRUD operations in a RESTful service

...ess operations semantics, you'll have to go the SOAP way (SOAP is actually message passing, but is typically organized in request-response operations). – Tomasz Nurkiewicz Jul 27 '11 at 20:35 ...