Read the math yourself

Published read-only so you can check every formula. Built from the same commit as the live app.

What this is

These four files compute every number LimitLine shows: control limits and rules, capability, the statistical tests, gauge R&R, DOE, the Lean metrics and the spreadsheet reader.
The app's version line (All charts and tools → Copy support info, the PDF footer and saved projects) ends in math 39728a84. That is the first 8 characters of the SHA-256 of these four files joined in this order, so you can confirm your copy runs exactly this code.
Every release is also checked against published worked examples on the validation page.

Files

File	What it computes	SHA-256
spc-core.js	Control charts, limits and the Nelson rules, capability, scanning helpers	`d6ca12737bf3d97f5c14c876a7606f0b4020dd633b0b5961e7f223d9df4b4a20`
stats-core.js	Hypothesis tests, regression, ANOVA, gauge R&R, DOE, distributions	`6241f92bfba641a77facef2cc83d6dbde05e3a72a09fc32fadaee8104868d4fc`
lean-core.js	OEE, takt and line balance, kanban, heijunka, standard work	`b1b0ba840858a676fabe09be56f7128881d1d2d3c9aebffe31fb48fa4ed7fde8`
table-core.js	The spreadsheet and paste reader	`815c14939451be1146353bb6982dad8c06e25ed25fb02ccaf966284a00bad1e2`

Terms

The code is published for reading and checking. It remains copyright Nicholas Williford (LimitLine); please don't copy it into another product. Found a mistake? Email [email protected]: a result that disagrees with a published worked example is covered by the reference-match guarantee.