Notebooks
Filter
None
Sort
Last updated
Observable
Sign in
Jonathan Helfman
@jonhelfman
Student of math, d3, svg, etc. Prototyper of visualizations for electronics design and test.
Filter
None
Sort
Published
206
34
Unit Circle Drag
Jonathan Helfman
Sep 7, 2020
1
Unit Circle Analytic Geometry
Jonathan Helfman
Nov 14, 2018
3
Unit Circle Trigonometry
Jonathan Helfman
Sep 6, 2021
fili FFT and Filter
Jonathan Helfman
Aug 1, 2023
Unit Circle Complex Plane
Jonathan Helfman
Sep 6, 2021
4
Data and Axes Transitions
Fork
Jonathan Helfman
Dec 8, 2018
4
Axis Update
Jonathan Helfman
Nov 18, 2018
1
Line Chart Update
Jonathan Helfman
Nov 20, 2018
4
Circle Legend with Title
Jonathan Helfman
Sep 7, 2020
11
Spiral Basket
Jonathan Helfman
Dec 23, 2019
5
Spiral Dots
Fork
Jonathan Helfman
Jan 1, 2019
2
Updating Spiral Rings
Fork
Jonathan Helfman
Jan 2, 2019
3
Boids without canvas clearing
Fork
Jonathan Helfman
May 23, 2021
2
Boids drawing triangles without canvas clearing
Fork
Jonathan Helfman
Sep 22, 2019
Lab Palette Extraction of Actual Pixel Values
Fork
Jonathan Helfman
Sep 12, 2020
7
Hierarchical Clustering of Actual Pixel Values
Jonathan Helfman
Nov 20, 2019
5
UMAP LAB-distance Layout of Actual Pixel Values
Fork
Jonathan Helfman
May 30, 2020
2
t-SNE Delaunay with actual pixel values
Fork
Jonathan Helfman
May 25, 2020
3
UMAP-js worker LAB-distance layout with actual pixel values
Fork
Jonathan Helfman
May 30, 2020
3
Force-Directed Graph of actual pixel values
Fork
Jonathan Helfman
Dec 8, 2019
Force-Directed Graph of camera pixel values
Jonathan Helfman
Apr 23, 2020
1
Circle-Packing of actual pixel values
Jonathan Helfman
Apr 17, 2020
1
Lab Palette Extraction Base
Jonathan Helfman
Nov 28, 2019
3
Microphone Audio Chladni Patterns
Fork
Jonathan Helfman
Nov 25, 2019
4
Shuffling Algorithms
Fork
Jonathan Helfman
Dec 7, 2019
4
Sort and Shuffle Algorithm Animations
Fork
Jonathan Helfman
Apr 7, 2022
3
Force-directed layout of Colormap Deltas
Jonathan Helfman
Oct 21, 2022
3
2
Cumulative Colormap Adjacent Color Deltas
Jonathan Helfman
Dec 2, 2019
3
Cumulative Colormap Adjacent Color Deltas with filtering and gradients
Fork
Jonathan Helfman
Mar 1, 2020
1
Force-directed layout of Palette Deltas 2
Fork
Jonathan Helfman
Dec 1, 2019
Spiral Heatmap - Northern hemisphere sea ice extent 1978 to 2017
Fork
Jonathan Helfman
Dec 5, 2019
2
Radial Color Chart
Jonathan Helfman
Aug 10, 2023
10
Radial Color Chart Test
Jonathan Helfman
Dec 27, 2019
2
Adjacent-Color Difference Graph of D3 Colormaps
Fork
Jonathan Helfman
Jan 14, 2020
5
Microphone Audio Spectrogram
Fork
Jonathan Helfman
Sep 18, 2020
6
Force-Directed Graph of Categorical Colors
Fork
Jonathan Helfman
Dec 26, 2019
3
How to Choose and Order Categorical Colors for use in Visualizations?
Jonathan Helfman
Aug 13, 2025
5
Microphone Audio Spectrogram 3
Fork
Jonathan Helfman
Jan 13, 2020
6
circleLegend Test
Jonathan Helfman
Dec 31, 2019
Slope and Length of a Line Segment
Fork
Jonathan Helfman
Dec 31, 2019
1
