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Select rows of a matrix that meet a condition

... 162 This is easier to do if you convert your matrix to a data frame using as.data.frame(). In tha...
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Using git commit -a with vim

... 194 In vim, you save a file with :wEnter while in the normal mode (you get to the normal mode by ...
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How do I check that multiple keys are in a dict in a single pass?

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Don't Echo Out cURL

... Put this on line 2: curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); share | improve this answer | follow | ...
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Regular expression for a hexadecimal number?

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How to disable python warnings

... answered Jan 22 '13 at 16:28 Pavel AnossovPavel Anossov 51.3k1111 gold badges130130 silver badges116116 bronze badges ...
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How to check if a given directory exists in Ruby

... | edited Aug 12 '17 at 2:51 Totor 73755 silver badges1717 bronze badges answered Jul 6 '09 ...
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How to change ProgressBar's progress indicator color in Android

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Difference between single and double quotes in Bash

... 614 Single quotes won't interpolate anything, but double quotes will. For example: variables, backt...
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How to convert a NumPy array to PIL image applying matplotlib colormap

...irst ensure your NumPy array, myarray, is normalised with the max value at 1.0. Apply the colormap directly to myarray. Rescale to the 0-255 range. Convert to integers, using np.uint8(). Use Image.fromarray(). And you're done: from PIL import Image from matplotlib import cm im = Image.fromarray(n...