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Java - get pixel array from image
...nt pixelLength = 4;
for (int pixel = 0, row = 0, col = 0; pixel + 3 < pixels.length; pixel += pixelLength) {
int argb = 0;
argb += (((int) pixels[pixel] & 0xff) << 24); // alpha
argb += ((int) pixels[pixel + 1] & 0xff); // blue
...
How to smooth a curve in the right way?
...)
y = np.sin(x) + np.random.random(100) * 0.2
yhat = savitzky_golay(y, 51, 3) # window size 51, polynomial order 3
plt.plot(x,y)
plt.plot(x,yhat, color='red')
plt.show()
UPDATE: It has come to my attention that the cookbook example I linked to has been taken down. Fortunately, the Savitzky-Gola...
How does RegexOptions.Compiled work?
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304
RegexOptions.Compiled instructs the regular expression engine to compile the regular expressio...
Is R's apply family more than syntactic sugar?
... makeSOCKcluster(c("localhost","localhost"))
parSapply(cl, 1:20, get("+"), 3)
This example uses a socket cluster, for which no additional software needs to be installed; otherwise you will need something like PVM or MPI (see Tierney's clustering page). snow has the following apply functions:
par...
Create Pandas DataFrame from a string
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538
A simple way to do this is to use StringIO.StringIO (python2) or io.StringIO (python3) and pass...
Add a new element to an array without specifying the index in Bash
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edited Dec 23 '09 at 9:18
answered Dec 23 '09 at 9:02
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Convert a float64 to an int in Go
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213
package main
import "fmt"
func main() {
var x float64 = 5.7
var y int = int(x)
fmt.Println...
dplyr: “Error in n(): function should not be called directly”
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Michael Bellhouse
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answered Apr 2 '14 at 3:59
mnelmnel
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