Add skinny PP index and vignette with jellyfish search#140
Open
Jaydeep869 wants to merge 3 commits into
Open
Conversation
Add skinny() function following the same pattern as stringy(). It wraps cassowaryr::sc_skinny() to compute the skinny scagnostic on 2D projections, for use as a projection pursuit index with guided_tour().
Shows how to use skinny() with guided_tour() and search_jellyfish, including saving/replaying the tour path and comparing against holes().
There was a problem hiding this comment.
Pull request overview
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This PR adds a new projection pursuit index based on the skinny scagnostic,
as described in the GSoC 2026 test tasks for the "tourr: new PP indices based
on scagnostics" project.
Changes
Easy task —
skinny()PP indexskinny()function inR/interesting-indices.r, following the samepattern as the existing
stringy()scagnostic indexcassowaryr::sc_skinny()internallyMedium task — Vignette
vignettes/skinny.Rmddemonstrating:skinny()withguided_tour()andsearch_jellyfishoptimiserholes()to show the different structure each index findsRelated