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silgon

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silgon / minimize_circle_ellipse_size_points.md
Last active June 8, 2022 16:34

image

@silgon
silgon / mid_hyperplane_line.py
Last active December 4, 2021 09:47
import numpy as np
import matplotlib.pyplot as plt
n_steps = 50
c, d= np.array([3,3]),np.array([1,2])
a = c-d
b = (np.linalg.norm(c)**2-np.linalg.norm(d)**2)/2
x = np.linspace(0, 4, n_steps)
y = np.linspace(0, 4, n_steps)
X, Y = np.meshgrid(x, y)
@silgon
silgon / ffmpeg_firefox_support.sh
Created September 27, 2021 19:25
ffmpeg firefox support
ffmpeg -i input.mp4 -vcodec libx264 -acodec mp2 -pix_fmt yuv420p output.mp4
@silgon
silgon / receiving_function.go
Created June 29, 2021 21:03
package main
import "fmt"
type person struct {
name string
age int
}
func (p person) print() {
@silgon
silgon / eigen_offset.py
Created May 29, 2021 21:32
from sympy import *
from sympy.abc import k
B=Matrix([[1, .5], [.5, 1]])
print(B.eigenvals())
A=Matrix([[1+k, .5], [.5, 1+k]])
print(A.eigenvals())
A=Matrix([[1+k, .5, 1], [.5, 1+k, 1],[.5, 1, 1+k]])
print(A.eigenvals())
@silgon
silgon / plot_line_and_spline.py
Created April 30, 2021 15:24
import numpy as np
import matplotlib.pyplot as plt
n_dimensions = 2
A = np.random.rand(n_dimensions) # source
B = np.random.rand(n_dimensions) # target
# linear function
n_steps = 50
delta = (A-B)/n_steps
@silgon
silgon / thread_lock.py
Created December 2, 2020 10:36
Example with lock thread
""" Worker will wail to another to finish a task in order to do some procedure
"""
import threading
import logging
import time
logging.basicConfig(level=logging.DEBUG,
format='(%(threadName)-10s) %(message)s',)
def worker(lock, seconds=2):
@silgon
silgon / read_xlsx_defined_name.py
Created November 17, 2020 14:40
wb=openpyxl.load_workbook("doc.xlsx")
sheet, inrange=list(wb.defined_names["MYDEFINEDNAME"].destinations)[0]
[xy.value for xy in x] for x in wb[sheet][inrange]]
@silgon
silgon / invert_pdf_colors_firefox.txt
Last active October 22, 2020 21:08
# newest version for Mozilla Firefox 81.0.2
javascript:/*PDF - toggle filter invert*/(function(){var L='style_PDFI',S='#viewerContainer>#viewer.pdfViewer>.page{filter: invert(100%)}',SS,E=document.querySelector('style[id="'+L+'"]');if(E){SS=E.disabled;E.disabled=(SS==true)?false:true}else{SS=document.createElement('style');SS.setAttribute('type','text/css');SS.id=L;SS.innerHTML=S;document.querySelector('head').appendChild(SS); document.querySelectorAll("#viewerContainer>#viewer.pdfViewer>.page").forEach(e=>e.style.border="10px solid rgba(0, 0, 0, 0)"); document.querySelector("#viewerContainer>#viewer.pdfViewer").style.background="#666"; document.querySelector("#toolbarViewer").style.background="#999"; document.querySelector("#toolbarViewer").style.borderBottom="#999 solid 1px"; document.querySelector("#toolbarSidebar").style.background="#999";document.querySelector("#outlineView").style.background="#bbb"}})()
# my bookmarklet
javascript:/*PDF - toggle filter invert*/(function(){var L='style_PDFI',S='#viewerC
@silgon
silgon / get_proxies.py
Last active May 26, 2020 17:49
#extracted from: https://www.scrapehero.com/how-to-rotate-proxies-and-ip-addresses-using-python-3/
import requests
from lxml.html import fromstring
def get_proxies():
url = 'https://free-proxy-list.net/'
response = requests.get(url)
parser = fromstring(response.text)
proxies = set()
for i in parser.xpath('//tbody/tr'):
if i.xpath('.//td[7][contains(text(),"yes")]'):