Jeroen Ooms jeroen

Staff research engineer at @ropensci, tidyverse team member, and project lead for R-universe

jeroen / test-katex.Rmd

Last active July 13, 2021 19:10 — forked from jmcastagnetto/test-katex.Rmd

Testing the rOpenSci {katex} package

	---
	title: "Testing rOpenSci katex"
	author: "Jesus M. Castagnetto, Jeroen Ooms"
	date: "2021-07-12"
	output:
	html_document:
	mathjax: null
	---

	```{r setup, include=FALSE}

jeroen / libpng_test.c

Created December 27, 2015 19:34 — forked from niw/libpng_test.c

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 -lpng15 libpng_test.c

jeroen / lm.R

Last active August 29, 2015 14:15 — forked from timelyportfolio/Readme.md

Linear regression in JavaScript using simple statistics

	# Load in simple statistics
	library(V8)
	ct <- new_context("window")
	ct$source("https://raw.githubusercontent.com/tmcw/simple-statistics/master/src/simple_statistics.js")

	# Run Regression
	ct$assign("mydata", cbind(mtcars$wt, mtcars$mpg))
	ct$eval("var lm = ss.linear_regression().data(mydata)")
	ct$get("[ lm.b(), lm.m() ]")

jeroen / simplified.geojson

Last active August 29, 2015 14:15 — forked from timelyportfolio/code.R

V8 example with turf.js

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jeroen / escape_chars.R

Last active August 29, 2015 14:06 — forked from wch/escape_chars.R

	#' @useDynLib nameOfPackage C_escape_chars
	deparse_vector3 <- function(x) {
	.Call(C_escape_chars, x)
	}