usage: from numpy_to_r import *
Transfer some functions from R to numpy&scipy
窝真的不习惯用python写以前R做的东西，于是写了这么个东西。。。
所有的都是deep copy
List of functions:
c(a[,b,...])
rep(x,size)
seq(a,b,delta)
matrix(arr[,ncol,nrow])
array(arr,dim)
rbind(a,b)
cbind(a,b)
t(mat)
solve(mat)
cumsum(vec)
cumprod(vec)
which(a,b,str)
this is different from original function 'which' in R,
usage: which(c(1,2,3),c(2,3,1),'<=') -> c(0,1)
which_and(a[,b,...]) & which_or(a[,b,...])
these two functions are used to complete the usage of original function 'which' in R,
usage:
which_and(c(1,2,3),c(2,3,4)) -> c(2,3)
which_or(c(1,2,3),c(2,3,4)) -> c(1,2,3,4)
apply_all(arr,fun)
apply fun to all elements in arr
apply_row(mat,fun)
apply fun to all rows in mat
apply_col(mat,fun)
apply fun to all cols in mat
read_csv(filename[,sep='\t',header=False])
write_csv(filename[,sep='\t',header=False])
norm family
pois family
exp family
t family
f family
gamma family
chisq family
beta family
runif *(not unif family)
lm(y,x)
x could be matrix
numpy.sort本身就比R的功能强大所以不改啦，sort可以直接用