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Getting individual colors from a color map in matplotlib

If you have a Colormap cmap , for example: 4 Answers 4 ...
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What are best practices for validating email addresses on iOS 2.0

What is the cleanest way to validate an email address that a user enters on iOS 2.0? 13 Answers ...
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How can I do DNS lookups in Python, including referring to /etc/hosts?

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Cleaning `Inf` values from an R dataframe

In R, I have an operation which creates some Inf values when I transform a dataframe. 8 Answers ...
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How can I map True/False to 1/0 in a Pandas DataFrame?

I have a column in python pandas DataFrame that has boolean True/False values, but for further calculations I need 1/0 representation. Is there a quick pandas/numpy way to do that? ...
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HSL to RGB color conversion

I am looking for a JavaScript / PHP algorithm to convert between HSL color to RGB. 19 Answers ...
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How are feature_importances in RandomForestClassifier determined?

I have a classification task with a time-series as the data input, where each attribute (n=23) represents a specific point in time. Besides the absolute classification result I would like to find out, which attributes/dates contribute to the result to what extent. Therefore I am just using the feat...
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Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)

I was going through the exercises in Ruby Koans and I was struck by the following Ruby quirk that I found really unexplainable: ...
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Resizing an image in an HTML5 canvas

I'm trying to create a thumbnail image on the client side using javascript and a canvas element, but when I shrink the image down, it looks terrible. It looks as if it was downsized in photoshop with the resampling set to 'Nearest Neighbor' instead of Bicubic. I know its possible to get this to lo...
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How do I truncate a .NET string?

I would like to truncate a string such that its length is not longer than a given value. I am writing to a database table and want to ensure that the values I write meet the constraint of the column's datatype. ...