> ## Documentation Index > Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt > Use this file to discover all available pages before exploring further. # 2026 09 28 ## Stacked and multi-series plots **Measurement time-series plots gain stacked rows**, the way a cycler's own software lays them out. **Add row** puts a new band under the plot on the same x axis, each with its own left and optional right axis, and a single hover box reads every band at the cursor. Every line on an axis shares that axis's colour and differs by dash, so matching a line to its scale never depends on colour alone. The right axis of the first row is now drawn dotted. **Analysis plots draw more than one series.** Split a table by a text column (charge vs discharge pulses, for example) to get one line per value instead of a zig-zag joining them, overlay several columns, put one on a right axis, and stack rows as on the measurement plot. Analyses can carry named views — OCV and resistance against SOC, pulse power against SOC, capacity against C-rate — and the view on screen can be linked directly. ## Pipelines record exactly which data they ran against Every pipeline element now records the measurements and time windows it read. A new panel on the pipeline page shows each pinned span next to the measurement's current span, so you can see at a glance when a measurement has grown since a fit was run, or is no longer available. Existing pipelines have been backfilled. **Improvements** * **The Validation Report compares temperature as well as voltage** when the model is thermal and the measurement has a temperature channel. A pair whose measurement was never instrumented says so in one line rather than drawing empty axes. * **Simulation time-series plots** take a step filter in the same syntax as the measurement filters (`1:3,5`), can use any loaded column as the x axis (voltage against capacity, for example), and show cycle and step on hover. * **Validation sections load in a single request**, and returning to the full view after zooming no longer refetches. * **Simulation results load faster**, as compact files the page can zoom within without going back to the server. * **Parameterized-model lists are lighter** for projects with uploaded custom models, which were sending the full model with every row. * **The in-app assistant starts answering within a few seconds.** It now says what it is looking up before it looks, and finds a record you name by searching for it rather than walking the whole project. * **Fit progress is tracked per array element and per start**, so a multistart or array fit reports each run separately. * **Global search opens a cell instance** at its own page, rather than its specification's list of instances. * **No white flash when loading the app in dark mode.** * **Name columns keep a usable width** on narrow screens; the parameterized-model ID column is shorter and copies the full ID on click. **Fixes** * **Pulse sections find every pulse.** Short pulses were rejected whenever the same record also held much longer steps, so a pulse test could report under half of its resistance values. A pulse section now also spans the discharges and rests between its pulses, a rate ladder run in duplicate is one ladder, and cycling whose cut-off drifts is counted rather than dropped. Existing analyses do not recompute on their own; new and re-run records carry the corrected numbers. * **Maccor sub-procedures are read as siblings.** Three sub-procedures called in turn were read as nested four levels deep, with every boundary one call late. * **Variables evaluated later on a stored simulation now match the solve.** On a simulation started from a set initial SOC, electrode and electrolyte potentials computed after the fact were offset (by up to \~0.7 V on a DFN). Affected stored results have been corrected. * **Design optimizations honour the model's options**, including its degradation mechanisms. Previously a design objective ran against a model that could not degrade, so every degradation mode reported zero while the job completed normally. Models saved in the current configuration format were also rejected outright. * **A pinned time window combined with a first/last step** selects the right data. It used to either fail with an unexpected error or fit a slice offset from the intended one. A window that excludes the chosen steps is now a clear error naming the span those steps cover. * **Organization Admins can choose a project role when adding members.** The role dropdown was empty for them; a failure to load roles now shows an error with Retry. * **Creating a study opens it**, so the next simulation goes into the new study rather than the one you were on. * **The Protocol column filter is back** on a study's simulation list. * **The simulation form clears a stale cell or model** remembered from another project instead of showing a red "not found" error. * **Pickers say they are loading while loading** instead of "No options", which read as "none exist" — in the channel picker, protocol groups and template pickers among others. * **A zoomed plot frames a newly added axis on the visible window**, not on data just off screen, and zooming back out is instant. * **The Raw Data page no longer flickers** on background refreshes. * **Table cells no longer show through the scrollbar** beside the row-actions column. * **Older pipelines open reliably.** Pipelines that ran before late August could fail to load. **Improvements** * **`CycleAgeing` scores a target only where it has values.** A `NaN` in a target column now means "not measured here", so a resistance measured on alternate check-ups can be fitted directly instead of being interpolated first. * **A fit can target a measurement's stored analysis.** Point a `CycleAgeing` objective at one measurement — its steps give the experiment and its analysis the targets — with `ionworksdata.AnalysisLoader`. * **The fit trace is always recorded**, whatever progress sink is in use, so `plot_trace()` works alongside printed or hosted progress. `TraceLoggerSink` is deprecated. **Fixes** * **Objective-level `penalties` and `constraints` are applied.** They were accepted and echoed back but had no effect on the fit, and a submitted config using a symbolic penalty was rejected by validation. * **A `CycleAgeing` fit whose experiment comes from a stored measurement** can now be built with `ionworks_schema` and submitted. * Fixed a rare failure of multistart half-cell OCP fits when a capacity sweep flattened against a voltage limit. **Improvements** * **Simulation results download as parquet.** `get_result()` still returns a `SimulationResult`, fetched faster; the new `/simulations/{id}/time_series/download` and `/simulations/{id}/steps/download` endpoints redirect to the files directly. * **Large uploads are more robust.** Files from 32 MiB use a multipart transfer, and an upload that hits a gateway timeout is retried once that way. * **An explicit `null` in a `PATCH` clears a nullable field** — for example a cell specification's `form_factor`, `manufacturer` or `notes`, or a model's `description`. Omitting a field still leaves it unchanged. **Fixes** * **A refused write returns `403`.** Updating or deleting a record your key cannot change used to return `500` or `204`, even though nothing was changed. * **Fit results are available the moment a job completes.** Reading plots straight after completion could intermittently fail with "No plots are stored". **Improvements** * **`AnalysisLoader`** loads a measurement's stored analysis as fit targets. **Fixes** * **`DataLoader.generate_experiment` keeps cycles and cut-offs.** It returned one cycle per step and dropped every termination condition. It now returns one cycle per cycle count with the recorded cut-offs. This changes the shape of a generated experiment, and existing `CycleAgeing` fits using `experiment="from data"` will produce different (correct) numbers. **Improvements** * **`manage-cells`** lists the fixed columns of the steps, cycles and time-series tables, so an agent can use them without a discovery call. * **`run-simple-pipelines`** documents using stored measurements as inputs, with pinned time windows. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.