This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
test_function_1 <- function(a=1){ | |
cat("a is here",a) | |
} | |
test_function_2 <- function(b,...){ | |
test_function_1(...) | |
} | |
test <- function(a,b){ | |
test_function_2(b,a) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import statsmodels.tsa as st | |
import numpy as np | |
import numpy.linalg as nl | |
import statsmodels.tsa as tsa | |
def solver_leastSquare(A,y): | |
return nl.lstsq(A,y); | |
def read_data(filename): | |
x=[] |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
def omega(N,k,n): | |
return np.exp(-2*np.pi/N*k*n*1j) | |
def hanWindow(N): | |
diag=np.array([np.sin(np.pi*i/(N-1))**2 for i in range(N)]) | |
H=np.diag(diag) | |
return H | |
def createF(N): | |
F=np.zeros((N,N),dtype=complex) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from __future__ import division | |
import numpy as np; | |
import matplotlib.pyplot as plt | |
import warnings | |
# Ref: http://practicalcryptography.com/miscellaneous/machine-learning/guide-mel-frequency-cepstral-coefficients-mfccs/ | |
# Ref2:http://python-speech-features.readthedocs.org/en/latest/. However, I checked the library code and found there might be a mistake when using rfft | |
def preemphasis(signal,coeff=0.95): | |
return numpy.append(signal[0],signal[1:]-coeff*signal[:-1]) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#### LDA,QDA, RDA, naive baye functions #### | |
lda.model=function(traindata){ | |
lda.result=lda(Y~.,data=traindata) | |
return(lda.result) | |
} | |
lda.pred=function(model,dataSets.X){ | |
predresult=lapply(dataSets.X,function(X) predict(model,X)$class) | |
errorInfo(predresult,"lda") |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import urllib2; | |
import numpy as np; | |
import json; | |
from pyproj import Geod; | |
def decode_line(encoded): | |
"""copied from https://github.com/jconst/Byway-Server/blob/master/polyline.py | |
""" | |
encoded_len = len(encoded) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# include <iostream> | |
using namespace std; | |
struct person{ | |
person * previousPerson; | |
person * nextPerson; | |
int sword; | |
int num; | |
}; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# http://stackoverflow.com/questions/10628847/geom-boxplot-with-precomputed-values | |
library(ggplot2) | |
DF <- data.frame(x=c("A","B"), min=c(1,2), low=c(2,3), mid=c(3,4), top=c(4,5), max=c(5,6)) | |
ggplot(DF, aes(x=x, ymin = min, lower = low, middle = mid, upper = top, ymax = max)) + | |
geom_boxplot(stat = "identity") |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
// This code is from https://www.cac.cornell.edu/VW/OpenMP/whileloop.aspx | |
#include <omp.h> | |
#include <stdio.h> | |
int main(int argc, char **argv) | |
{ | |
/* OpenMP does not provide a parallel while loop, | |
so we're going to have to make one ourselves... */ | |
int sj, sstop, tn, tj, tstop; | |
int foo(int j); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import numpy as np | |
from scipy.io.wavfile import read,write | |
import matplotlib.pyplot as plt | |
from matplotlib.pylab import * | |
def omega(N,k,n): | |
return np.exp(-2*np.pi/N*k*n*1j) | |
def hanWindow(N): | |
diag=np.array([np.sin(np.pi*i/(N-1))**2 for i in range(N)]) |