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Changing font size and direction of axes text in ggplot2
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301
Use theme():
d <- data.frame(x=gl(10, 1, 10, labels=paste("long text label ", letters[1:10])...
Drawable image on a canvas
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179
The good way to draw a Drawable on a canvas is not decoding it yourself but leaving it to the ...
Analyze audio using Fast Fourier Transform
...ly spaced frequencies, starting at 0. Because your sampling frequency is 44100 samples / sec. and the number of points in your FFT is 256, your frequency spacing is 44100 / 256 = 172 Hz (approximately)
The first coefficient in your array will be the 0 frequency coefficient. That is basically the av...
Calling shell functions with xargs
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175
Exporting the function should do it (untested):
export -f echo_var
seq -f "n%04g" 1 100 | xar...
Difference between Big-O and Little-O Notation
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edited Dec 16 '17 at 18:37
Mohamed El-Nakib
5,77011 gold badge3030 silver badges3939 bronze badges
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Formatting “yesterday's” date in python
...ort date, timedelta
>>> yesterday = date.today() - timedelta(days=1)
>>> yesterday.strftime('%m%d%y')
'110909'
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How to base64 encode image in linux bash / shell
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155
You need to use cat to get the contents of the file named 'DSC_0251.JPG', rather than the file...
Overlaying histograms with ggplot2 in R
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115
Your current code:
ggplot(histogram, aes(f0, fill = utt)) + geom_histogram(alpha = 0.2)
is ...
How to generate a random integer number from within a range
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