Christophe Yamahata

Calque (tracing paper)

On-line tool: Calque

Spline Editor (without bug)

Spline Editor / Splice: Insert control points between existing ones

Closest Point on Line: Solution with multiple control points

Logarithmic and linear scale bars

Draggable axis with arrow

Draggable axes with arrows

Nonlinear regression in Javascript

Polynomial regression in Javascript

Pie/Donut Chart (with draggable slices)

Bar Chart Race with Images

Donut/Pie Chart Race

Curves and graphs

This collection showcases the step-by-step process followed to create "Calque", 
a web tool designed for manual data extraction from graph images. It works like 
tracing paper, except that the notebook enables the extraction of CSV data. 

InGaAs_photodetector_responsivity.PNG

Shure_Beta-52A.PNG

SLED_EXS210154-01.PNG

RGBW_LED_OSRAM_LE-RTDUW-S2WN.PNG

Fletcher-Munson_1933.PNG

Sony_ILX511.PNG

Rubens_Kurlbaum_1901.PNG

Rutherford_ThX_Radium-224.PNG

18NLW4500_Eighteen_Sound.PNG

json2csv.umd.js