r on Brodie Gaslam

Rtini Part II: Vectorize the Absolute $#!+ Out of This

Mon, 04 Jan 2021 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Last year’s RTINI Part I post introduces the RTIN mesh approximation algorithm.

On Quosures

Tue, 11 Aug 2020 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Quosures? Quosures first showed up on the scene as part of rlang about three years ago to a collective 🤯.

Standard and Non-Standard Evaluation in R

Tue, 05 May 2020 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; With Great Freedom… Non-Standard Evaluation is a pretty controversial topic in R circles, and even in the R documentation.

RTINI Part I: Visualizing MARTINI

Mon, 27 Jan 2020 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Off Course, of Course A few months ago I stumbled on Vladimir Agafonkin’s (@mourner) fantastic observable notebook on adapting the Will Evans etal.

Visualizing Algorithms

Wed, 30 Oct 2019 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; If Only We Could See Code In Action I recently got caught up trying to port a JavaScript algorithm1 into R.

Hydra Chronicles Part V: Loose Ends

Thu, 22 Aug 2019 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Almost Done! Fingers crossed this will be the last post of the Hydra Chronicles, a.

Hydra Chronicles, Part IV: Reformulation of Statistics

Wed, 24 Jul 2019 00:00:00 +0000

When Computing You Are Allowed to Cheat Throughout the Hydra Chronicles we have explored why group statistics are problematic in R and how to optimize their calculation.

Hydra Chronicles, Part III: Catastrophic Imprecision

Tue, 18 Jun 2019 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Recap mtcars in binary.

Hydra Chronicles, Part II: Beating data.table At Its Own Game*

Mon, 10 Jun 2019 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; In One Corner…

Hydra Chronicles, Part I: Pixie Dust

Fri, 17 May 2019 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; In Which It Dawns On Me That I Know Nothing

A Strategy for Faster Group Statistics

Sun, 24 Feb 2019 00:00:00 +0000

Group Statistics in R -- A known limitation of R is the substantial overhead to evaluate R expressions.

The Secret Lives of R Objects

Mon, 18 Feb 2019 00:00:00 +0000

Should We Care About R Object Internals? R does a pretty good job of abstracting away the memory management aspect of programming.

Favicons From the Comfort of Your R Session

Sat, 09 Feb 2019 00:00:00 +0000

Call Me Selectively Paranoid I don’t know about you, but I get skeeved out at the thought of submitting my photos to random websites hawking favicons.

RPN Parsing in R

Fri, 11 Jan 2019 00:00:00 +0000

Accidental Art

Sat, 29 Dec 2018 00:00:00 +0000

Poor Volcano Writing a 3D rendering pipeline in R was fertile ground for accidental art.

A New Stereoscopic Mount Spectacular

Wed, 12 Dec 2018 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; Cool, but Not Eye Popping As I finished the ray shading post, it occurred to me that it would be pretty cool if we could make these awesome 3D-looking reliefs actually 3D, or at least stereoscopic.

Do Not Shade R

Tue, 23 Oct 2018 00:00:00 +0000

PRE.fansi SPAN {padding-top: .25em; padding-bottom: .25em}; I Got Sucked In Over the past few months I’ve resisted distraction by the pretty awesome work that Tyler Morgan Wall has been doing with his rayshader package.

data.table vs. dplyr in Split Apply Combine Style Analysis

Fri, 18 Apr 2014 00:00:00 +0000

Overview In this post I will compare the use and performance of dplyr and data.