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quxiaofeng / read_csv.c
Created April 18, 2019 05:13 — forked from amirmasoudabdol/read_csv.c
To read the CSV file in C
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
void read_csv(int row, int col, char *filename, double **data){
FILE *file;
file = fopen(filename, "r");
int i = 0;
@quxiaofeng
quxiaofeng / FCD.py
Created January 12, 2018 10:10 — forked from randName/FCD.py
Fast Circle Detection using Gradient Pair Vectors
#!/usr/bin/env python2
import numpy as np
import cv2 as cv
def FCD( src, mask ):
A_THRESH = [ 2, 1 ]
sobel_x = cv.Sobel( src, cv.CV_32F, 1, 0, ksize = 5 )
@quxiaofeng
quxiaofeng / xor_keras.py
Created August 16, 2016 10:30 — forked from cburgdorf/xor_keras.py
Comparing XOR between tensorflow and keras
import numpy as np
from keras.models import Sequential
from keras.layers.core import Activation, Dense
from keras.optimizers import SGD
X = np.array([[0,0],[0,1],[1,0],[1,1]], "float32")
y = np.array([[0],[1],[1],[0]], "float32")
model = Sequential()
model.add(Dense(2, input_dim=2, activation='sigmoid'))
@quxiaofeng
quxiaofeng / generate_qrcode_from_url.py
Created April 22, 2016 07:28
Generate QRCode from URL. 为 URL 生成 QR 二维码，方便手机拍摄与转发。
import qrcode
from PIL import ImageFont, ImageDraw
def generate_qrcode_from_url(
info = 'http://www.quxiaofeng.me/about',
text_position = (43,10),
code_version = 1,
code_error_correction = qrcode.constants.ERROR_CORRECT_H,
code_box_size = 10,
code_border = 4,
@quxiaofeng
quxiaofeng / pdio.py
Created April 4, 2016 09:05 — forked from luispedro/pdio.py
Save & load from a pandas DataFrame/Series
import numpy.lib
import numpy as np
import pandas as pd
import cPickle as pickle
def save_pandas(fname, data):
'''Save DataFrame or Series
Parameters
----------
@quxiaofeng
quxiaofeng / Ruby Notepad Bookmarklet
Last active August 29, 2015 14:14 — forked from jakeonrails/Ruby Notepad Bookmarklet
data:text/html, <style type="text/css">#e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div id="e"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("e");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script>
@quxiaofeng
quxiaofeng / id_mathjax_plugin.js
Created May 14, 2014 14:55 — forked from christianp/id_mathjax_plugin.js
var id_mathjax_plugin;
(function() {
var mjp = id_mathjax_plugin = {
load_mathjax: function() {
function e(e){var t='.MathJax .mn {background: inherit;} .MathJax .mi {color: inherit;} .MathJax .mo {background: inherit;}',n=e.createElement('style');n.innerText=t;try{n.textContent=t}catch(r){}e.getElementsByTagName('body')[0].appendChild(n);var i=e.createElement('script'),s;i.src='https://c328740.ssl.cf1.rackcdn.com/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML.js',i.type='text/javascript',s='MathJax.Hub.Config({skipStartupTypeset:true,tex2jax:{inlineMath:[[\'$\',\'$\']],displayMath:[[\'\\\\[\',\'\\\\]\']],processEscapes:true}});MathJax.Hub.Startup.onload();',window.opera?i.innerHTML=s:i.text=s,e.getElementsByTagName('head')[0].appendChild(i)}function t(t){t.MathJax===undefined?e(t.document):t.MathJax.Hub.Queue(new t.Array('Typeset',t.MathJax.Hub))}var n=document.getElementsByTagName('iframe'),r,i;t(window);for(r=0;r<n.length;r++)i=n[r].contentWindow||n[r].contentDocument,i.document||(i=i.parentN
@quxiaofeng
quxiaofeng / commutative-diagram
Created April 15, 2014 07:35
\begin{diagram}
& & X & & \\
& \ldTo^{f_1} & \dDashto_f & \rdTo^{f_2} & \\
A & \lTo_{\pi_1} & A\times B & \rTo_{\pi_2} & B \\
\end{diagram}
\begin{diagram}
& & X & & \\
& \ruTo^{f_1} & \uDashto_f & \luTo^{f_2} & \\
A & \rTo_{i_1} & A\oplus B & \lTo_{i_2} & B \\
@quxiaofeng
quxiaofeng / Chinese font setup
Last active August 29, 2015 13:58
config the fonts of English and Chinese respectively for LaTeX
% fonts
\usepackage{xeCJK}
\usepackage{xltxtra}
% beamer
% \usefonttheme{default} % sans serif
\usefonttheme{professionalfonts}
\usefonttheme{serif}
% \usefonttheme{structurebold}
% \usefonttheme{structureitalicserif}
% \usefonttheme{strucutresmallcapsserif}
@quxiaofeng
quxiaofeng / Evolution of a Python programmer.py
Created November 12, 2013 13:44
#Newbie programmer
def factorial(x):
if x == 0:
return 1
else:
return x * factorial(x - 1)
print factorial(6)
#First year programmer, studied Pascal