wafermap 0.34.0, testdata-parser 0.15.0 and tsmap 0.1.44: right-click to chart and tabulate any dies, build and keep your own plots, and yield that follows your pass bins

[telecasterer]

wafermap 0.34.0 and @wafertools/testdata-parser 0.15.0 are out, and tsmap 0.1.44 ships with both. The main additions are a Plot tab in Insights, a chart builder whose plots are kept for the next lot, and a much wider drilldown: right-click, or click a chart mark, and the menu opens on exactly the dies you pointed at.

wafermap 0.34.0 has breaking changes. Insights is on by default, with a Maps | Insights switch at the right of the toolbar row (pass insights: { enabled: false } to opt out). Right-click on a map, a gallery card or a chart mark always opens the drilldown menu; if you attach a context menu of your own to a map, the steps are in Upgrading. onSaveText can receive a Blob for a very large table. Sweeps are plots now (insights.sweeps still works and logs a notice). Pass bins and ring count are applied once, in buildWaferMap: a map you built needs nothing, but the report and view functions refuse hand-made data that does not state them. Each step is in Upgrading.

Two changes can move numbers you have seen before.

• Standard deviation (σ) now divides by n−1 everywhere. The Test Values table, the per-test statistics, the lot trend, lot drift and the report all use the sample standard deviation, the same definition the capability indices (Cp, Cpk) already used, so a σ in a table now matches the σ behind a capability figure. Dividing by n−1 is the usual choice when the dies you measured are a sample of what the process makes. It makes σ slightly larger: by about 2.6% for 20 dies, 0.5% for 100 dies, and not visibly at lot scale. Exported CSVs carry the same σ.
• Yield follows your pass bins everywhere. If you state pass bins such as 3 and 5, every chart, table and report, including those opened from a right-click, now judges by them, as the map does.

The drilldown menu. It offers charts (value histogram, process capability), your saved plots, New plot… and New sweep… drawn over just those dies, and tables (Dies, Test statistics, and Wafers when the dies span several), each with Export CSV and Copy. What opens it:

• A selection, a wafer or a gallery card. A saved file is named for the selection and carries a Wafer column.
• A bin in the legend, on a map or the gallery's lot legend: its dies on that wafer or across the lot, without selecting them. With several bins filtered in, Only bin N and All filtered bins switch between them.
• A finding in the Summary panel: every die it selects, across all the wafers, or its wafers when it names no dies.
• A mark on an Insights chart: a bar of the bin pareto, a pass-rate row (the dies failing that test), a bar of the value histogram, a ring or quadrant of the yield diagrams, a sweep level, or a plot's point, bar or box each open on exactly the dies they count. In the Insights scatter, hover names the die, a click opens its wafer, and a dragged rectangle selects dies across wafers.
• A gallery: Select on every wafer applies a box made on one card at the same die positions on all of them (an edge ring, a scratch zone, a reticle corner), and Ctrl/Cmd+click on a card header picks whole wafers. Right-click then opens on all of them, with Only this wafer to narrow it.

Clicking a die's row in any Dies table rings that die on its map. The right-click Value histogram offers Edit as new plot, and a saved sweep opens in its editor over the selected dies.

What else is in it:

• Plot tab. Scatter, histogram, box, bar and line, with any test, die position, wafer yield or lot field on each axis. Plots can be exported, imported, and cleared with Delete all plots… (with Undo).
• Data tab. Statistics, Dies and Wafers as tables, smooth at hundreds of thousands of dies.
• tsmap. The column mapping and file filter read rows from throughout a file, so a column that changes partway through shows as varying. The desktop window reopens where you left it.
• testdata-parser 0.15.0. parquet_distinct_count takes a third argument, blankIsAValue, so a column that is "25" in some rows and empty in the rest is not reported as constant. Direct callers of that export need to pass it.

The quickest way to try it is tsmap 0.1.44, in the browser with nothing to install or as the desktop app from the release page.

• tsmap in the browser: https://wafertools.github.io/tsmap/app/
• tsmap 0.1.44 release and installers: https://github.com/wafertools/tsmap/releases/tag/v0.1.44
• tsmap changelog: https://github.com/wafertools/tsmap/blob/main/CHANGELOG.md#0144--2026-10-06
• wafermap changelog: https://github.com/wafertools/wafermap/blob/main/CHANGELOG.md#0340--2026-10-06
• What's New: https://wafertools.github.io/whats-new/#2026-10-06-build-and-keep-your-own-plots-insights-shows-the-lot-as-tables-and-a-gallery-can-select-the-same-dies-on-every-wafer