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Possible to make labels appear when hovering over a point in matplotlib?

...st thing I have been able to find while searching here is the annotate command, but that appears to create a fixed label on the plot. Unfortunately, with the number of points that I have, the scatter plot would be unreadable if I labeled each point. Does anyone know of a way to create labels that on...
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Selecting multiple columns in a pandas dataframe

...1 = df[['a', 'b']] Alternatively, if it matters to index them numerically and not by their name (say your code should automatically do this without knowing the names of the first two columns) then you can do this instead: df1 = df.iloc[:, 0:2] # Remember that Python does not slice inclusive of the ...
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EJB's - when to use Remote and/or local interfaces?

I'm very new to Java EE and I'm trying to understand the concept of Local interfaces and Remote interfaces. I've been told that one of the big advantages of Java EE is that it is easy to scale (which I believe means you can deploy different components on different servers). Is that where Remote and ...
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How to Decrease Image Brightness in CSS

...ticle about it here: http://www.html5rocks.com/en/tutorials/filters/understanding-css/ An another: http://davidwalsh.name/css-filters And most importantly, the W3C specs: https://dvcs.w3.org/hg/FXTF/raw-file/tip/filters/index.html Note this is something that's only very recently coming into CSS a...
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Example images for code and mark-up Q&As [closed]

... in this answer. It includes a Java based interface that defines the URLs and makes them easy to access. Details: 32x32 pixel PNG (4 colors x 5 shapes) with partial transparency (along the edges). Categories: png icons       Sprite...
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What's the difference between a continuation and a callback?

... browsing all over the web in search of enlightenment about continuations, and it's mind boggling how the simplest of explanations can so utterly confound a JavaScript programmer like myself. This is especially true when most articles explain continuations with code in Scheme or use monads. ...
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What is the EAFP principle in Python?

...mmon Python coding style assumes the existence of valid keys or attributes and catches exceptions if the assumption proves false. This clean and fast style is characterized by the presence of many try and except statements. The technique contrasts with the LBYL style common to many other languages s...
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Rotating videos with FFmpeg

...ut.mov For the transpose parameter you can pass: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip Use -vf "transpose=2,transpose=2" for 180 degrees. Make sure you use a recent ffmpeg version from here (a static build wi...
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How to get names of enum entries?

I would like to iterate a TypeScript an enum type and get each enumerated symbol name, e.g.: 28 Answers ...
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What is the fastest or most elegant way to compute a set difference using Javascript arrays?

Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference ( A - B or A \B , depending on your preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says. ...