Discover davidwhogg/TheTractor Open Source project

chapters of a book Hogg will never write

358

DataAnalysisRecipes

mcmc

Some notes about MCMC

AstronomyChallenges

we Don't Throw Away Data (tm).

TheThresher

what we've learned about linear fitting; might eventually merge into DAR

FlexibleLinearModels

time-domain variations of stellar spectra

Avast

RGB to CMYK conversion based on a physical printer model

PrinterModel

code and documents related to self-calibration and uber-calibration projects

SelfCalibration

A ram-pressure model for sailing

Sailing

advice to the spectroscopists

NoDataInterpolation

what to do when your log-likelihood has only been evaluated at discrete locations

LikelihoodGrid

BadForScience

a philosophical paper

finding strong gravitationally lensed quasars in ground-based data

LensTractor

Phil's insanity; possibly forked or dead.

AstroTaches

JavaScript

SloanAtlas

code to assemble the plates of the Sloan Atlas of Galaxies

documents and code related to hierarchical approaches to weak lensing

WeakLensing

An annual week-long program in computational data analysis for physical scientists

DataAnalysisSchool

DiffractionMicroscopy

working for Leslie

transforming rectangular data to find structure

Platypus

work on spectral templates, eigenspectra, and spectroscopic modeling

HoggsDebts

it's bad

SpectralArchetypes

GetRichOrDieTrying

Hogg's random proposals

a project to explore methods for inference of variances of distributions

InferenceOfVariances

Hogg's playground for understanding interferometry

RadioArrayModel

a playground for experiments related to LBT interferometers working in the near infrared

Hippolyte

place for thoughts about online probabilistic reasoning

OnlineInference

Gaia

experimental material for unofficial Gaia data reduction

scrape data from the Gaia alerts index

GaiaAlerts

asteroseismology on the cheap

HoneyComb

Hogg's playground for selection function stuhh

SelectionFunction

materials for first-year mechanics

Physics1

PostScript

CameraModel

exploratory code to model the E&M fields in a camera

a playground for defeating MCMC and evidence integrations

CombinatoricDegeneracies

NightSky

bare-bones planetarium

a whitepaper in response to the "repurpose Kepler" call

SaveKepler

Machine Learning for Astronomers

ML4A

Hogg's playground for dust maps

InterstellarDust

an AstroHackWeek 2015 project

DeprojectAllGalaxies

HTML

WorseThanLSP

A method for finding periodic signals that's even worse than the LS periodogram

A preservation of (and perhaps publication of) the Roweis identity notes.

Identities

Can an astronomer *ever* have Accuracy(tm)?

AccuracyVsPrecision

AreWeSimulated

some writing for myself

crowded-field photometry with independent components analysis

Icy

imaging differencing the dumb-ass way

Duh

A talk by Hogg about exoplanets

ExoTalk

stacking bad, modeling good!

DoNotStack

EPRVCalibration

A project to play with EXPRES calibration.

CroMagnon

nothing to see here

hashing integers to word lists

PuppyButtonFace

NYU PHYS-UA 120 Dynamics: An advanced undergraduate course on classical mechanics

Dynamics

Code to do stuff with local disk velocity structure in ESA Hipparcos data

StreamsFromTheDeepPast

Hogg's ideas about photometric redshift estimation and related matters

PhotoZ

GaiaSprint

web pages and organizational material for the Gaia Sprints

ObsDec

Making real-time observing decisions based on expected future-discounted information gains

working with data from a data provider no-one can trust

CensoredData

making adversarial examples against ML/DL methods used in astrophysics

AstroAdversary

Exploring the dimensionality of chemical-abundance space with APOGEE

NuclearSimplex

How to measure a radial velocity (attempt number 2)

EPRV2

determine the potential of the Milky Way with *just two stars*

BreadAndButter

Euclid

playing with ideas for ESA Euclid

data4physics

A graduate class at NYU

Hogg's musings on one elementary math tool.

HundredsChart