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Making heatmap from pandas DataFrame

...5, 4)), index=index, columns=columns) plt.pcolor(df) plt.yticks(np.arange(0.5, len(df.index), 1), df.index) plt.xticks(np.arange(0.5, len(df.columns), 1), df.columns) plt.show() This gives: share | ...
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Renaming columns in pandas

...he .columns attribute: >>> df = pd.DataFrame({'$a':[1,2], '$b': [10,20]}) >>> df.columns = ['a', 'b'] >>> df a b 0 1 10 1 2 20 share | improve this answer ...
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Keep only first n characters in a string?

...r JavaScript's String method substring e.g. 'Hiya how are you'.substring(0,8); Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'. substring documentation s...
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Center image horizontally within a div

... | edited Jan 20 '18 at 23:10 TylerH 18.1k1212 gold badges6161 silver badges8080 bronze badges ...
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Check if an element is present in an array [duplicate]

... 1044 ECMAScript 2016 incorporates an includes() method for arrays that specifically solves the prob...
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How can I make setuptools install a package that's not on PyPI?

...g it to http://github.com/mtai/python-gearman/tarball/master#egg=gearman-2.0.0beta instead, easy_install will be able to identify the package name and its version. The final step is to add the URL to your package's dependency_links, e.g.: setup( ... dependency_links = ['http://github.com/mta...
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How to install Android SDK Build Tools on the command line?

... | edited Aug 24 '16 at 0:54 trygub 8788 bronze badges answered Oct 17 '13 at 0:24 ...
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Sort array of objects by single key with date value

... use Array.sort. Here's an example: var arr = [{ "updated_at": "2012-01-01T06:25:24Z", "foo": "bar" }, { "updated_at": "2012-01-09T11:25:13Z", "foo": "bar" }, { "updated_at": "2012-01-05T04:13:24Z", "foo": "bar" } ] arr.sort(function(a, b) { v...
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Get a pixel from HTML Canvas?

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How can I determine the direction of a jQuery scroll event?

... 704 Check current scrollTop vs previous scrollTop var lastScrollTop = 0; $(window).scroll(functio...