Skip to content

Instantly share code, notes, and snippets.

View jeroen's full-sized avatar

Jeroen Ooms jeroen

View GitHub Profile
@piscisaureus
piscisaureus / pr.md
Created August 13, 2012 16:12
Checkout github pull requests locally

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

@niw
niw / libpng_test.c
Last active September 3, 2024 18:38
How to read and write PNG file using libpng. Covers trivial method calls like png_set_filler.
/*
* A simple libpng example program
* http://zarb.org/~gc/html/libpng.html
*
* Modified by Yoshimasa Niwa to make it much simpler
* and support all defined color_type.
*
* To build, use the next instruction on OS X.
* $ brew install libpng
* $ clang -lz -lpng16 libpng_test.c
@max-mapper
max-mapper / readme.md
Last active May 21, 2022 11:02
ffmpeg youtube live event rtmp stream from raspberry pi with raspi camera (raspivid)
  1. compile ffmpeg for arm https://github.com/fiorix/ffmpeg-arm
  2. create youtube 'live event'. get rtmp url + session id
  3. run this:
raspivid -o - -t 0 -vf -hf -fps 30 -b 6000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/<SESSION>

you can tweak -b and -fps to your liking. the settings above work well for 1080p. by not specifying width or height we get the full 1920x1080 resolution from the raspi camera

@ajdavis
ajdavis / mongo-restore.c
Created May 28, 2015 11:12
Example mongorestore-type program with the Mongo C Driver
#include <bson.h>
#include <mongoc.h>
static int execute (mongoc_bulk_operation_t *bulk) {
bson_t reply;
bson_error_t error;
int ret;
char *str;
#!/bin/bash
#
# Copyright (c) 2013-2014 David Ingram
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
library(magick)
library(reshape2)
library(dplyr)
library(tidygraph)
library(particles)
library(animation)
plot_fun <- function(sim) {
df <- as_tibble(sim)
plot(df$x, df$y, col = df$color, pch = '.', axes = FALSE, xlim = c(-100, 317), ylim = c(-268, 100), xlab = NA, ylab = NA)
@oliviergimenez
oliviergimenez / mcmc_betabinomial.R
Last active July 12, 2023 08:59
Visualise Metropolis algorithm with binomial likelihood and beta prior
# load packages
library(tidyverse)
theme_set(theme_light(base_size = 16))
library(gganimate)
library(magick)
# deer data, 19 "success" out of 57 "attempts"
survived <- 19
released <- 57