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Deleting DataFrame row in Pandas based on column value
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Using numpy to build an array of all combinations of two arrays
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Getting individual colors from a color map in matplotlib
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import matplotlib
cmap = matplotlib.cm.get_cmap('Spectral')
rgba = cmap(0.5)
print(rgba) # (0.99807766255210428, 0.99923106502084169, 0.74602077638401709, 1.0)
For values outside of the range [0.0, 1.0] it will return the under and over colour (respectively). This, by default, is the minimum an...
Truncate number to two decimal places without rounding
...eform.rounded
var with2Decimals = num.toString().match(/^-?\d+(?:\.\d{0,2})?/)[0]
rounded.value = with2Decimals
}
<form onsubmit="return calc(this)">
Original number: <input name="original" type="text" onkeyup="calc(form)" onchange="calc(form)" />
<br />"Rounded" numb...
HTML5 Canvas Resize (Downscale) Image High Quality?
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+100
Since your problem is to downscale your image, there is no point in talking about interpolation -which is about creating pixel-. The ...
Add a common Legend for combined ggplots
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108
Update 2015-Feb
See Steven's answer below
df1 <- read.table(text="group x y
gro...
What is the best way to compute trending topics or tags?
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104
This problem calls for a z-score or standard score, which will take into account the historical...
Sample random rows in dataframe
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460
First make some data:
> df = data.frame(matrix(rnorm(20), nrow=10))
> df
X1 ...
What's the difference between a single precision and double precision floating point operation?
...entation requires a 32 bit word, which may be represented as numbered from 0 to 31, left to right.
The first bit is the sign bit, S,
the next eight bits are the exponent bits, 'E', and
the final 23 bits are the fraction 'F':
S EEEEEEEE FFFFFFFFFFFFFFFFFFFFFFF
0 1 8 9 3...
Is there a way to detect if an image is blurry?
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answered Oct 14 '11 at 10:01
Simon BergotSimon Bergot
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